Picking the Best 5.56 Round

[@nm8844]

Brassfacts can speak to women!!! Wow

[@BrassFacts]

only through a screen and aggressively edited

[@mikutrash5050]

🤯🤯🤯

[@Windowlick_]

Hes been talking to hop for years

[@joemo1033]

Hes finally able to use his channel to cash in on some strange. Bless

[@DankasorusRex]

He’s EVOLVING

[@Hoplopfheil]

If you make me some lunch I will watch this video while I eat it.

[@BrassFacts]

eat the leftovers bitch

[@Entropic-Visage]

You two are my favorite internet couple

[@Boondockballistician]

Don't worry. The sandwiches are my job. I got you guys

[@Entropic-Visage]

​@@Boondockballistician way to make it hetero lol

[@samabinguap8303]

Best lgbtq couple on gun tube.

[@Boondockballistician]

I'm in this video and I don't like it. For real though, thanks for being so amazing to work with!

[@vazione5410]

Thanks for the Great information, one of the best guests on this channel 👍

[@BrassFacts]

glad to have you. Now go back to moving loot to the ship.

[@Trouble_2-1]

@Boondockballistician Great content! Hope to see more. Maybe "SPRs in the Desert - Part 2", checking performance of 5.56/.223 out to 800?

[@sinisterthoughts2896]

great seeing you get noticed!

[@Hook_88]

Great info, thank you.

[@jasonlatsios7841]

Love it when spouses release ammo vids within the hour of each other

[@Gibsonsghost]

It's stunning

[@jimmydigriz362]

@@Gibsonsghost and brave

[@user-tw8ov]

Hop is the woman

[@jason200912]

Why you saying they married?

[@mattcomchoc2957]

Life partners....

[@TerriblyTactical]

In this video Brock talks to a girl for the first time.

[@John_Connor556]

History in the making 👀

[@bugnut4432]

Only for business purposes, rest assured.

[@Vuntermonkey]

He removed all waifus and socks from his background.

[@TerriblyTactical]

@@bugnut4432 very professional indeed

[@TerriblyTactical]

@@Vuntermonkey lolol yeah he did

[@JimYeats]

The interesting thing that everyone has forgotten about ballistics gel is that it was never designed to show what a bullet would do to it. It was designed only to show what it would do to a bullet. Ballistics gel was only ever made to show three things: Bullet penetration depth, bullet expansion, and bullet fragmentation/weight retention. That’s it. It was just meant to be a medium that could consistently approximate already known bullet performance of the time.

[@nickolasthefrog]

top comment

[@mahbuddykeith1124]

“I’ve never been attacked by a block of gelatin, so I don’t care what it does to a block of jelly; I care about what it does to this asshole down the hallway trying to stab me with a big knife.” -Clint Smith

[@JimYeats]

@@mahbuddykeith1124 Definitely a fun Clintism, but not really helpful for consistency of bullet performance comparison.

[@TheRyanDude]

Also everyone forgets there a difference between clear gel and calibrated gel

[@JimYeats]

@@TheRyanDude Absolutely, although that difference doesn’t change that we aren’t really looking at the gel itself.

[@mr.stotruppen8724]

No sir I don't know where those cans of M855A1 came from. I was told the company that drew it expended it all.

[@Appalachia_Ape]

It's definitely not listed on any auction sites for 3 bucks a round.

[@greencreekranch]

Jokes on you, i just buy the cheapest bulk pack 223 the internet has to offer and sob slightly while sending rounds down range and thinking about how miserable being a german gunowner is and how my celebrity crush will never know i even exist. Now that i think about it, the joke may be on me.

[@Comrade_Chloe]

I think the best answer to this is having a 20in barrel and every round will work well no matter what you have.

[@ReoL_17]

The correct answer. All these manlets complaining "but it's heavy" need more time in the gym and less time on the range.

[@MylesKillis]

@@ReoL_17you’ve never carried a rifle for long in the right environments by yourself

[@jake4194]

​@@ReoL_17I feel like the weight is neglable. It's the length that bothers me. Although it dosnt really matter outside of buildings and vehicles

[@ReoL_17]

@@MylesKillis You have literally zero idea what I've done. I run a 20" all day. I also ruck and lift unlike the average skinny fat KZbinr, so I'm not ready to fall over from an extra pound of weight.

[@Omaba_Baba]

Fucking. Facts.

[@ConsensusX]

The best rounds are the one you stock up on for cheap. I believe that "I wish we had more ammo" has been said more than "I wish we had better ammo".

[@Vuntermonkey]

I say both!

[@henryc7548]

@@Vuntermonkey infinite money glitch?

[@BrassFacts]

thats why im still on FMJ train. I'll make the jump eventually.

[@jason200912]

Everyone should should have a mag of match ammo. But they gott remember to swap it out when they want to spray.

[@Omaba_Baba]

@@BrassFacts Same. As long as they are going fast enough (

[@jacobmattson5885]

“Hallerpoints” Grandpa is so proud

[@vitoscaletta7151]

You gotta have that illusive .223 Wylde ammo

[@jeremywatson9129]

Not in this economy

[@markrichards7452]

😢😢😢

[@DasGoodSoup]

Is there an actual wildcat for that? I thought it was just a chambering

[@Vuntermonkey]

​@@DasGoodSoupIt is a 223 casing with a 556 round, reamed down to 22 caliber.

[@EarlHildebrandt]

@@vitoscaletta7151 What did he mean by typing "illusive" rather than "elusive?" It is a mystery🤷

[@Fiddlefaddle115]

Let's be real. After the first 2 mags of my "good ammo" it's just going to be Winchester white box.

[@bobrowley4346]

😆

[@mghegotagun]

You'd be able to buy more good ammo if you bought less winchester white box. Honestly pmc bronze pointed soft points are a bit more than 60 cents a round.

[@MrBigChops]

@@mghegotagun• AAC Sabre Black Tip 75gr & 77gr OTM 👿

[@Fiddlefaddle115]

@@mghegotagun iz uh joke

[@nathanleonard2245]

​@MrBigChops I'm all about these 75gr black tips!!!! I've stocked up

[@TheEDCTribe]

This is a huge break through for my boy. Getting to talk autisticly about bullet performance and speaking to a woman?? I WAS HERE.

[@franklinroberts6456]

This comment section is great. Hopefully she comes back lolz.

[@tubeguy4066]

"Wonan"

[@michelesilvestri8340]

as an engineer myself, it’s crazy how in general discussion in the hobby world (guns, cars, sports…) you almost never see a real expert like an engineer being taken on stage and talk about subjects. spoiler: that’s because engineers will answer with “it depends” and then start a rabbit hole way too technical for the average dude online

[@adamdyment9732]

This feels like an episode of love on the spectrum.

[@Douglass_6]

Brock, this was a great video. I found Jessie a few months ago and think she's a hidden gem in the gun-tuber community. I had no idea she was so educated in ballistics. It was cool to see this collaboration between you guys. Great info!!

[@GATESisRUSTY]

Run a 20” barrel, never think about it again

[@BrassFacts]

that'd make me think about it even more.

[@David-ct1rd]

What I do.

[@MrDragonkarp]

Good luck in florida😂😂

[@GATESisRUSTY]

@@MrDragonkarp SBRs only in Florida or what

[@GATESisRUSTY]

@@BrassFacts I am smooth brain

[@joshb5719]

The best ammo is whatever has the coolest looking holographic box

[@_Art.Vandelay]

The outcome of Hops video is that LE Colt rifles were more of a force multiplier than a new 9mm hollow point. Calling it rn that Brock’s outcome is that 5.56 bullet selection doesn’t matter if you don’t carry your 9mm. Perfectly balanced.

[@Architect_Art_Vandelay]

Architect?

[@CabronMonoxide]

@@Architect_Art_Vandelay Marine biologist?

[@OfficialFedHater]

ISHYGDDT

[@dw5523]

I get this is an analysis of ballistics, but most people don't even get the main point of 5.56, which is to provide fire superiority for maneuver warfare. We don't need perfect ballistic performance, just something to keep the other guys heads down so the maneuver element can flank, close with, and engage the target at more effective ranges.

[@ChucksSEADnDEAD]

However, it was stated in the requirements for SCHV trials that the .308 replacement should have equal lethality to .308 up until 300 meters.

[@ALovelyBunchOfDragonballz]

Yep. The key to 5.56 is more than twice the ammo for the same weight as its larger alternatives.

[@Lusa_Iceheart]

Yeah, lighter rounds so you can carry twice as many and put twice as much lead down range. Similar performance to other rounds but massive increase in volume of fire. You might lose 10% efficiency from a "perfect" round, sure, but you have two rounds to land a hit versus one. So in the grand scheme of things, the math works out in favor of "more lead down range" regardless of what that range is or the crap in between you and the target. As for the long range engagements that were/still are the bane of the GWoT campaigns, that 300 yards+ distance is really a feature of the terrain that WONT be relevant in many other wars. As soon as you get to urban combat, that fancy match grade ammo isn't ever going to get to do it's thing and half the time you might be using a shotgun rendering the entire topic of rifle ammo a mute point. I suspect most of us here in the US watching this are stocking ammo for something a little more... domestic than the GWoT mess, so urban/suburban combat is going to be the more likely thing we should be considering. I mean, I assume most of it would be confined to the urban/suburban areas and we shouldn't really expect tank battles on the plains of Kansas but l suppose I'm just speculating at what the future holds like anyone else.

[@wishuhadmyname]

You mentioned tank battles in KS, and my brain laughed at Ft. Riley, literally in the plains of Kansas with 46,853mi visibility (don't check that number), and with about as big a vehicle depot as Ft. Hood

[@dw5523]

@@wishuhadmyname find a good hill and it gets scary close to 50k miles visibility (I live in Kansas. Also, don’t check that number).

[@a15thcenturysuitofgothicarmor]

"And that's how I met your mother." - Brass Facts

[@DeepSix220]

Lunch break, checking in. Guilty as charged.

[@Deskp0per]

Same hahaha

[@lordhellfire153]

"Is there a perfect bullet" 75gr Gold Dot. I'm not taking questions.

[@BrassFacts]

Wasn't that also the conclusion of the video 🤣

[@lordhellfire153]

@@BrassFacts I haven't finished it 🥲

[@Starcraft98marine]

@@lordhellfire153lol

[@lordhellfire153]

@BrassFacts well now I have and yeah, those rounds are stupidly difficult to get ahold of. Someone tried claiming the 75gr were discontinued, but they were selling them.

[@rickh9396]

​@@lordhellfire153 Tools&Targets tested them and Federal Fusion and it seems they're nearly identical, just marketed differently. I speculated that the reason the .223 Gold Dots were suddenly so scarce was because they charge more for the Fusions and want people to buy them instead of cheaper Gold Dots.

[@BIGLY012]

Look at him, my man is IN LOVE 😘

[@smitty3624]

The infamous “dum-dum” bullets named in the Boer wars are a good illustration for this. The boers were using their hunting rifles, with their soft-pointed, expanding, hunting bullets which are just plain more effective on soft targets than the British’s FMJ .303 ammunition. But of course, they propagandized it as them intentionally using cruel “ungentlemanly” ammunition.

[@MandoWookie]

You have it backwards. The term 'dum dum bullet' comes from the DumDum Arsenal in India, which produced the first runs of soft point 303 ammo. The Brits adopted the MkIV expanding soft points and used them AGAISNT the Boers, which the Dutch protested in the Hague convention. The Boers were mainly using 7mm Mausers which were flatter shooting and outranged them, using standard FMJ ball.

[@jeredhersh789]

Taking a lunch break thats just a hair too long? Nah, I'm sitting in my office watching this when I *should* be working.

[@Vuntermonkey]

We should spend our time organizing and planning. Filling forms, completing reports, and other make-work is just wasting our time. No more brother wars.

[@wishuhadmyname]

"A wise man watches Brass Facts at work; a foolish man waits until his break." -Sun Tzu, probably

[@IAMStormyNautilus]

Late to the party but samesies, we out here doing God's work instead

[@MichiganGunNut]

Dude that opening made me feel personally attacked

[@Unkown_regards]

DUDE SAME, going one minute over my break just because of that

[@SelkeySmooth]

Boss makes a dollar and I make a dime that’s why I watch novagroup on company time…

[@SelkeySmooth]

Boss makes a dollar and I make a dime that’s why I watch novagroup on company time…

[@HondaRiderX17]

You guys are doing it wrong. Gotta watch while clocked in "managing" other people work.

[@johndecker9983]

​@@HondaRiderX17time thefting at the management level 👍 👌 took a lot of work to not work this hard man 😂

[@danbradley6553]

The ballistics experts at Speer, featured in Lucky Gunner’s KZbin video, say that if the projectile hits at 2,200 FPS or faster, then the temporary cavity IS trauma - because 2,200 FPS is the magic number of velocity at which the human body’s capacity for elasticity.

[@ghostpunkkilla]

I know you mean "yaw" but here in Texas my brain keeps thinking "y'all".

[@deucehamilton7921]

Same 😂

[@johndecker9983]

She looks country enough for it to work too, was trippy for a second 😂

[@freneticfanatic]

When i did my own research back in 2015 watching all of Tnoutdoors9's videos, i settled on 62gr Federal Fusion soft points for self defense. That is still what we use for our HD rifles in 2024. Very good terminal performance with a high degree of mitigation of overpenetration were my two main criteria. Nowadays i stock some of all 3, 62gr soft points, 77gr OTMs and 55gr m193: i just stock a lot more fmj rounds than the others in basically a 90/10 ratio.

[@kwulff6139]

I load 55gr Vmax for extremely cheap. It’s a semi decent clone for urban TAPS. Also 855A1 when I can get the projectiles. Uncle freedom is another great person for defensive ammo info.

[@genfiveten595]

Bold of you to assume we're gainfully employed

[@bobrowley4346]

😆

[@johnsheppard7175]

Harrel meat target remains undefeated.

[@Sprice93USAF]

Ew.

[@rifleshooterchannel208]

Godawful test medium. Paul was a great dude but the meat target was a stupid gimmick.

[@johnsheppard7175]

@@rifleshooterchannel208 lol Lmao even

[@gameragodzilla]

@@rifleshooterchannel208It’s a closer approximation to the human body, especially the heterogenous aspect of it, than ballistic gel. Main problem is it’s not entirely a consistent medium every time due to variations in rib sizes, amount of lung tissue, etc. I always look at both mediums to see both how it does consistently and how it does in the meat target. If the round does well in both, I like it.

[@flopus7]

Remember, switching your weapon system is faster than reloading heavier bullets

[@burtbiggum499]

My 20" barrel does make me better though

[@troar237]

one day Hop will figure out 55 grain out of a 20" 1:12

[@Hornet135]

As opposed to 1:7” or 1:8”?

[@MylesKillis]

One day you’ll use a suppressed 20 inch in the jungle and realize it’s ASS

[@eriklambert3809]

@@MylesKillismake him go to the south and go through the brush with it. It will be a big nope.

[@bmrz38]

@@Hornet135yes, there is a notable difference with terminal ballistics. Twist rate, bbl length and bullet are all factors for terminal ballistics.

[@GreyHardgrave]

These two. Nerd/prepper baby. Literally the best NGSW program lol

[@aaronbriscoe8368]

This is why I loved Paul’s “meat target”!

[@atranimecs]

accuracy is one factor, penetration is one vs hard targets, and maximum damage on soft targets. EPR is prized not just for accuracy, but because it can penetrate obstacles/cover at distance due to its steel core. the EPR can penetrate 3/8" mild steel at 400 meters. typical m855 can only do it at 160 meters. heard an interesting antecdote from someone active in the middle east talk about using NTX 223 35 gr for pure velocity increase at shorter range based on the expansion effect with higher velocity impact on soft enemy combatants vs. range. would be a cool experiment for a future video to see obstacle penetrations vs soft tissue performance between round examples

[@digitalpunk5365]

It is so different and awesome to see a woman speak beyond talking points on KZbin.

[@Bulking_Smeagol]

I’m a fan of the Barnes 70 TSX 5.56. I’d like to think JSOC knew what they were doing when they developed the “brown tip” load 🤷🏼‍♂️

[@rifleshooterchannel208]

And yet they still lost two wars 😂

[@es4583]

@@rifleshooterchannel208 if you win the battles but lose the wars, then you need new generals. The weapons are fine, because you are winning the battles. The combat troops are fine because you are winning the battles. You are losing the wars, because your generals must therefore suck.

[@StreetLight099]

What is the brown tip load and how is it similar to the TSX?

[@rifleshooterchannel208]

@@StreetLight099 Brown tip is 5.56 pressure load using a commercial 70gr Barnes TSX projectile.

[@StreetLight099]

@@rifleshooterchannel208 this is used by the military?

[@tyronenance9182]

Speer Gold Dot bonded round does great on barrier & bone, I like the 75 Gr, but I do Run the MK262 77 Gr OTM, But situation will dictate for use, bad guys like to find cover & concealment, so it comes down to what you want your round to achieve, Size of the target, distance to the target, & shooters ability is what counts in any gun fight

[@Spokanistan]

Lunch break gang for Brassfacts has the same energy as poop gang for OG 6am Garand Thumb uploads.

[@cheeseemperor3135]

Nice video I think an interesting point that could be brought up around modes of failure is impulse Assuming impulse is consistent Impulse = force x change in time A round that breaks apart quickly will decrease change in time, with a constant impulse it means that the force applied to the target will increase to counteract the decreased time of contact as the round fails quicker. Probably another reason why fragmentation is so effective But I’m just a physics student so it’s just a theory 😂

[@treloughfarrer7604]

Winchester white box m193 come at me 😂😂😂😂

[@G.W-01]

Out of a 20 inch barrel?

[@treloughfarrer7604]

@@G.W-01 nah 7.5 🤣🤣🤣🤣🤣

[@treloughfarrer7604]

@@G.W-01 I would love to see a 35gr steel core out of a 20inch though. 4000fps would be nuts

[@isaakjunkeer785]

@@treloughfarrer7604still a hell of a lot better than a PCC lol.

[@andycraig6905]

I mean that shit gets 3300 fps from a 20 inch and about 2800 from a 10 inch gun. Definitely a decent choice if you're trying to stack a few cases deep and defend yourself from within about 200-300 yards.

[@warzoneguy6089]

I overheard some guys at the range last week talking about how a nearby small town police department had swapped out all of their patrol AR-15s for 9mm PCCs because the department had determined 9mm rifles would be fine for anything they would encounter. I highly doubt it was true but it made me laugh. I absolutely believe a small town, fuddy police department would make that decision for those reasons while, simultaneously, I incredulously believe there is no way any PD worth their salt would believe a PCC would give anywhere near the same performance as an AR.

[@Jake-ug2mf]

The small agency I was a reserve officer at allowed 223/556 or 9mm AR style rifles made by certain manufacturers (in the list of manufacturers were browning and Winchester, so obviously the old chief was quite the gun guy) and no SBR’s/silencers allowed. All that said, I wouldn’t be surprised if a chief or deputy chief or the lead “firearms instructor” at a PD decided “hey we should have 9mm rifles instead of standard AR’s”.

[@BrassFacts]

Youch

[@mghegotagun]

​@@Jake-ug2mf We should get Clint Smith to yell at him

[@Foxhound709]

I do think one thing that's often overlooked is faster, flatter shooting rounds make it substantially easier to get hits on moving targets.Regular soldiers don't have to think about leads or drop at normal fighting ranges.

[@ALovelyBunchOfDragonballz]

Good example is 9Holes latest video on the AUG HBAR/LMG. Its a 24" 5.56 barrel and he had to hold lower than normal on the range.

[@WarhammerWeekEndTimes]

I like how she addressed fully copper projectiles. I have a special build with the Klein Machining 24 inch AR-RPK with a 1/9 twist and I run 40gr fort scott TUI's. I haven't done any chrono testing myself but their website has them at 3900+ fps with a 24 inch barrel. Really zipping round at that speed without the chance of jacket separation

[@miltechmoto]

Yes nice to see you got my buddies upper. We toured the fort scott booth at shot show. Those rounds are good for medium to close ranges. Lighter bullets tend to be less accurate at longer ranges, but the fort scott 40 grains have such a low flight time and the bullet drop is so low, it can negate the wind and elevation to some extent. Close up and until 400 meters, it should be devastating.

[@mace_felloutthe_windu]

Damn. That 6.5 grendel comment hits home 😂

[@buff34x]

My college physics class was a phenomenal jump in my understanding of 5.56 ballistics. Specificaly when studying Impulse and how seatbelts reduce injuries despite not reducing the total energy being transferred into the body. They work by increasing the time it takes for the change in momentum to occur. Same energy over more time = less Force, aka less damage. So if you are designing a round you want to make it able to change momentum quickly, ie rounds that are just light enough to punch deep enough in the target it will get a higher percentage of of its energy turned into Force, which causes the temporary wound cavity to be more permanent.

[@poprocket2342]

The conversion about temporary cavities is so interesting because so often the gel blocks are so big that realistically the round would have already exited the body before it reached the widest point of expansion

[@sinisterthoughts2896]

the gel block is not a one-to-one analogue of flesh, flesh is far denser. they use a softer gel so they can view the effect of a wound channel stretched out over roughly twice the distance(iirc), think of it as an analog version of zooming in. that's why FBI uses 10% gel, when the military standard is 20%. one allows better study of hollow point expansion, the other better mimics the intended target.

[@ChucksSEADnDEAD]

@@sinisterthoughts2896 Even 20% fudges the results. Brass Fetcher shot a 5.56 tracer round into a 20% block and it nearly split the block in half. The fact is that gel is designed around the correct drag coefficient that generates accurate bullet expansion and penetration values that can be extrapolated. In terms of yield strength gel is much weaker than tissue and tears easily.

[@tfwwhennofitlitgf3300]

IIRC 4 inches of penetration is equivalent to breaking human skin. Should be an obvious point when you consider how easy it is to stick your finger in a gel block.

[@sinisterthoughts2896]

@@ChucksSEADnDEAD agreed, for the sake of brevity I was only addressing one kf the many reasons ballistic gel is not a perfect analog for flesh. I appreciate the input though, and it's nice to know that other people are also aware of this.

[@racingdc9]

She has a bullet pen!! She's a keeper.

[@chris2Agearreviews]

Very informative and well put together video.....I'm my humble opinion M193 is the best "all around" 5.56 loading for the money.....decent barrier performance...if you push it fast enough it will fragment and or yaw(guaranteed to do so from a 20 inch barrel like the M16a4)......I would love to see some ballistic gel test of the AAC 70gr tsx they selling for $1 a round because the copper rounds are interesting to say the least.

[@sccrash3938]

I came here for the dog, but stayed for the dog...

[@stevenkennedy4130]

Very informative! Nova doing a great job on operating Brass. Thanks for the share!!

[@sonickiller360]

I think 77 gr tmk is very under-appreciated.

[@Warhorse556]

75gr Gold Dot if barrier blind is needed, 77gr TMK for everything else.

[@StreetLight099]

@@Warhorse556given that the bonded bullet won’t lose any weight upon impact it has the terminal effect of a much heavier round-this has been talked about by Nathan Foster who works with environmental agencies and has done a lot of research on ballistics. With bonded ammo you can go lighter and still get great penetration and wound cavities. The TMK will fragment and lose mass upon impact-this is part of why it’s important to go heavy. I wish 85gr match ammo was more common in 5.56, at close range the terminal performance is even better than the 77gr

[@johnmarken3945]

Don't forget that the temp wound cavity is still quite disabling to humans. Ever get the wind knocked out of you? No perm wound there yet you are down

[@JamesMelton]

The guest mentioned this directly.

[@Trouble_2-1]

As it looks when that things balloons one might say they get the wind knocked into them...

[@SonnyCrocket-p6h]

temporary cavity does not apply to sub 2000 fps impacts, and maybe not sub 2200 fps if all you have is ball, especially steel-capped ball. you CAN get 2000+ fps 9mm ammo, in the form of 50 gr solid copper hp's, from Liberty Arms. they work great on large feral dogs and they are my choice of (factory) ammo for edc and shtf

[@imperfectlump6070]

​@@SonnyCrocket-p6hit's not a hard fps number. The larger the caliber the slower it can be going, down to even about 1800 fps.

[@dylanmitchell4604]

Thanks for the info on ammo. Something I would like to share with you is that as my dog got older a couple things really helped and they are Dasuquin, Antinol, and CBD. Wish you guys the best.

[@VoFALT]

have 77 grains not performed better in ballistic gel than m193 within 100 yards? I'm not sure I believe your conclusion here in this video

[@Boondockballistician]

77grain has a longer neck is ballistic gel. So it takes longer to "initiate". Given that, the round might not be better depending on your needs

[@Hook_88]

missile mommy has spoken, size queen deposed

[@N-A762]

In shorter barrels they definitely perform better in 16 inch barrels its nuanced

[@MrBigChops]

@@N-A762• Are you saying 77gr OTMs are better in shorter barrels and opens up faster than it would in 16+” barrels?

[@N-A762]

@@MrBigChops No sorry I should have worded it better. 77s out of a 16 are better but the differences between 77 and 55 are more pronounced out of a shorter barrel like an 11.5"

[@inferninx]

I still choose 5.56 pressure federal tactical bonded softpoints. I got lucky to pick up two cases of it back in the day from a pawnshop that didn’t know what they had, which was FBI issued ammo, and sold it to me for 350 bucks a case. It works well against vehicle glass, walls, couches, and definitely against people.

[@popinmo]

55gr also penatrates very well vs armor even though m855a1 is better because its steel core if you put a tugsten 55gr it will do better then a 77gr tugsten round

[@MagicPrepper]

JSP's. My brother doesn't care about the Hague Convention and neither do I ;) civilian gang check in.

[@snailze6761]

11:45, She just made the M855A1 more expensive to shoot. Science is so HOT!

[@geodkyt]

Yup, use case matters. For example, I live in lightly rolling, heavily forested terrain, where the only opportunities for shots longer than 200 meters are basically non-existant outside a dedicated rifle range (where I'm honestly unconcerned with terminal ballistics) or down the highway (and the sheriff and state police might want to have a word with you afterwards). Primary use case is "Indoors, maybe pushing to 200 meters, but probably staying within 100 meters". Shortest 5.56mm barrel rifle I'd actually use "for real" (as opposed to range toys built because I though they were cool looking) is 14.5", and most are 16". *And* (even though it isn't THAT critical, especially at these ranges) I prefer when possible to use the same ammo for practice (both dedicated and just casual plinking) as I would use "for real", so I'm practicing as close to "real" as practical. So, I buy M193 by the case whenever the price per round is decent. It'll do what I expect a 5.56mm rifle to do under my use cases, and I'm not going to obsess specializing my choice (especially at a significantly higher cost) for edge cases that are going to be rare examples of what is already a rare probability event - call it Rare Squared. If i need something more, I have a few hundred M855 and M196, with at least one magazine of each loaded into visually and tactilely distinctive mags, on my SHTF "ammo purse".

[@12345farris]

did you and Hop coordinate to both release an ammo related video within a few minutes of each other?

[@mikebrown4433]

Nope. Total coincidence and you’re the only one who noticed.

[@veriest1]

They don't coordinate anything other than their MRE's.

[@sheldoniusRex]

Federal Fusion is bonded, available at sporting goods stores, and has been shown to be barrier blind. I have a mag of Fusion, a couple hundred rounds of Barnes 50 grain TSX, and stack m193 deep. So I'm feeling pretty good right nao.

[@jkz33MD]

Lots of good points touched on in this video... but the one thing not mentioned that is critical for wounding is projectile speed. You have crush path injury (aka what just a pistol round does) with a permanent wound cavity and pressure wave iniury in the temporary wound cavity if the projectile is fast enough (aka the big huge balloning we see in gel blocks). Wounding relies on energy transfer, so heavier/faster projectiles possess it. That energy is transferred via mechanical displacement of tissue. Tissue can distend, but only so much and so quickly. Above ~2,200 FPS is where average human tissue will reach a distensibility limit. Beyond that speed, the tissue displaced in a temporary wound cavity will be permanently injured by the mechanical energy transfer and lead to blood vessel shearing, tissue necrosis, etc. This wounding is why M193 at close range is devastating as it does not rely soley on tissue destruction from the crush permanent pathway of the bullet. The Army extensively documented this, along with shot placement and penetration, as primary wounding factors on cadeveic studies. I could go on with a lot more factors and the physics but transfering that energy at that hi speed threshold is critical to impart damage beyond just the crush path of a projectile.

[@mdogg6491]

I agree with this assessment. "Temporary stretch cavity" does significantly impact the surrounding tissues/vessels. That starts the clock on the fighter's ability to stay awake...

[@Boondockballistician]

@@mdogg6491 temporary stretch cavity definitely shouldnt be discounted but certainly is an area that is very often portrayed incorrectly! another thing to consider is the shapes and location of fragmentation, not just in regards to depth. People like to talk about retained weight, but is the weight retained in a few large fragments or in several small ones? are the fragments located within the primary wound channel or are the within the temporary wound cavity? One interesting note about the study of your crush path was in relation to observing the tool used on kidney stones. So that instrument has a significantly larger sonic pressure amplitude than what small arms will provide, however, if youre getting a kidney stone broken up by one you're certainly not worried about the damage to the surrounding tissue. The actual affects of the damage of your temporary cavity are still largely debated and have often shown to be much more "soft target" specific

[@notshared2543]

Introducing Miss Facts

[@forkthepork]

The best 5.56 is similarly-priced steel case 300 BLK. Not a joke.

[@RAMZAVFX]

0:11 11 seconds in and hes already attaking me 😂 (jkjk)

[@pranavkamath4329]

Her channel was recommended just a week or two ago to me

[@evanacey1414]

Hornady Black 75gr Interlock HD SBR. Out of my 12.5” middy and Sandman K w/ 5.56 FH end cap I get ZERO flash and a significantly quieter report than other loadings.

[@Mpeterson1286]

If you handload, those fancy bullets are very available and not much more money than the FMJs. 👍

[@Jack72607]

Very interesting that she talked about fleet yaw. Read an Army paper about m885 long range performance, basically at point blank range the round can hit between a +4 and -4 degree angle. If it hits at 0, you get a 9-10” neck length before tumbling and fragmentation (guaranteed icepick wound if you’re not shooting a bodybuilder sideways), if it hit at 4 degree you get a 3” neck length and impressive lethality with enough velocity. Over range the fleet yaw decreases as the bullet stabilizes, between 150m and 300m a 0 degree hit is almost guaranteed (after 300m rotational velocity of the round starts to be low enough to make fleet yaw variations bigger than at the muzzle). This means that if you’re using a tumbling dependent round to initiate fragmentation, muzzle lenght doesn’t help that much in increasing fragmentation range because you will likely get an icepick wound after 100m even if you’re still at fragmentation velocity (icepick wounds are still possible at cqb range if you get a 0 degree hit). M885a1 solves the variability at any range initiating fragmentation without needing to tumble first, it just need to hit at a high enough velocity (which happens much further than a 100m)

[@AndrewW.]

Yep, the civilian market has had that capability for years, they are called ballistic tips, to fragment you don't need to tumble, just need to crumble.

[@geneotrexler8246]

Steel case & laquered Brown Bear 62 gr SP is what us poor people used

[@AndrewW.]

Temporary cavities or hydrostatic shock is good for psychological stops, the person being hit needs to know they were hit for the fight to be taken out of them, so you want a balance of both a large temporary and permanent wound cavity. Think the difference between 9mm Luger vs .357 magnum, almost the same projectile, but with different psychological responses due to the increased energy being delivered. For 5.56, we forgot the category of ballistic tipped heavies. I would pick a 77gr Sierra Tipped Match King over their older SMK/OTM, what I have stacked is AAC 75gr Saber Black tips because it is 60 cents a round and is "unstable" in a "fluid" at longer ranges at lower velocities. The way they work is similar to soft points but with better ballistic coefficients for those longer shots, the important thing for a tipped heavy is when it hits the "fluid" the front fragments violently and quickly, and the ass end continues to your desired penitration depth for vital hits. A good balance of weight loss on a projectile seems to be around 60% loss and 40% retained. Tools and Targets has a good gel video through clothing on the 75gr Sabers. If I wasnt stacking those I would be stacking Sierra Tipped Match Kings.

[@marine6680]

I have heard from those that used both the Mk262 and Mk318 in theater, that they preferred the terminal performance of the Mk318 over the Mk262. They did prefer the Mk262 at more extended ranges, though. I also heard from someone involved with police SWAT stuff, that they loved 60gr varmint bullets. They liked that they broke up quickly when hitting an interior wall, but we're very effective at dropping bad guys. They did use 55gr varmint, and he said they worked well most of the time, but there would be occasional instances where it required a couple extra hits to drop some baddies. Typically an altered state of mind situation, causing the bad guy to be able to shrug off the pain and shock. This is second hand kind of indirect info, and I can only attest as to what I was told, and not the validity of the statements on a broader consensus or if it is accurate, and not just perception.

[@Perforator2000]

Awesome to see these channels work together. Also, nice Glycine Airman.

[@Echo_Charlie]

I mean, 77s have pretty consistent terminal performance and reliably stop threats from pretty much all reasonable barrel lengths at all ranges in the 5.56 engagement envelope. With their increased availability as of late, there isn't much downside to just stocking those.

[@MrBigChops]

What you think about the 75gr Sabre Black Tip ?

[@MrBigChops]

I like the 77gr OTM too

[@Echo_Charlie]

@@MrBigChops I've heard they are solid, but I have never used them so cannot really offer any input personally.

[@MrBigChops]

@@Echo_Charlie • Alright thank you man

[@markeasley6149]

77gr OTM AAC makes sense as an above average, but accessible ammo choice. American made. Would not hesitate to recommend.

[@bdjp2011]

Another extremely important point as far as terminal ballistics goes is speed. As you was saying about the elasticity, that elasticity limit or stretch point is overcame and starts to rip when a projectile moving 2,100fps or quicker impacts tissue, which is the greatest factor that separates rifle rounds from all other and what makes them so deadly. Also explains why energy isnt what kills, speed is. Sure the bullet fragmentation is a huge factor but I think its prolly second to speed. This is why distance, no matter the caliber, is what you have to look at. Just run a ballistics chart on all your calibers and look for the range it drops below that 2,100fps threshold and plan to engage your target closer than that distance if you need the max effect on target. For example, AAC Sierra 77gr ammo outta a 16" will be above that 2,100 fps threshold out to ~250ish yards. .308 win 175gr BTHP match ammo outta a 26" 308 win is good to ~300ish yards before dropping below that.

[@BrassFacts]

speed with 556 is very important. But speed isn't everything. DocGKR talks about how they were sending big projectiles, really fast in their test lab, and damage was minimal. Similarly, dropping weight off of 556 to get more speed generally results in a significant less lethal round. Speed helps, but it's not the end all be all, especially when you exit a 556 centric mindset.

[@bdjp2011]

@@BrassFacts So looks like I screwed up on the velocity and its supposedly 2200fps. I was getting the info from this video kzbin.info/www/bejne/imfOhqmfbJemZrs where Lucky Gunner interviewed Federal Ammunition ballisticians and he said the FBI found that rifle cartridges performed so drastically better than handgun because of the speed. Specifically impact velocity at or exceeding 2200fps. Go to about 4:50 in the video and ull see the reference. Im sure its much more complicated and maybe there needs to be speed AND an ideal projectile but I still believe that the 2200fps threshold needs to be met, at minimum, in order for the tissues elasticity to be overcame and cause massive hemorrhaging, which is why pistol rounds are so ineffective although they prolly have more research into making the perfect projectile than any other cartridge type. Maybe super fast projectiles, double or triple the required speed that are solid and dont fragment causes less damage? im not sure.

[@westraa2086]

boring ass day at work best thing for it is a new brass facts video

[@davidnuxoll7074]

In rewatching this video I’m glad last year I began loading mags with alternating cartridges. In a 30 rd mag every other bullet was either a 77gr SMK or 55gr SCHP. That way if the unlucky day happens when I have to defend myself and shoot multiple rds I have alternating bullets to balance out the weak points. Also I’m referring to a home invasion and out of a suppressed 16 inch.

[@DPolk98]

It may be the terminal autism, but I like the blueprint backgrounds in some of your thumbnails

[@BrassFacts]

ayeee, OG brass facts fan

[@jonathanconsiglio166]

If you need the full documents from military wounding ballistics and dr Gary Roberts that were referenced in the video, I have them and can send them over. Good reading. Bullets like 70gr TSX are at full expansion around 4” but also have deep penetration and they were doing good work out of our 11.5’s.

[@_eagleofsuger_4631]

>see woman click away

[@BrassFacts]

good, don't want cooties

[@rifleshooterchannel208]

>see Jewish KZbinr click away

[@SonnyCrocket-p6h]

you might want one 30 rd mag full of mixed 62 gr steel capped ball and tracers for dealing with moving vehicles or making choppers go away, or removing drones. I go with a 20 and a 30 rd mag full of 60 gr Nosler Partition softpoints (from Federal or Black Hills ammo) and one 20 rd mag of 69 gr, hpbt match ammo, for sniping beyond 300m. I also have a silencer, night sights, trigger job, scope option, free float tube, military bipod and a CMMG 22lr conversion unit. the 60 gr Aquila subsonic 22 ammo gives me a BB gun quiet option of braining men dogs, hogs, or deer to 50m, if I hold-shut the 22's bolt. A GOOD 223 silencer renders full power 223 ammo no noiser than a normal 22lr rifle, not noticable at half a mile. The sonic 'crack" of 223 ammo thru a silencer is non-directional in nature and most people do not recognize it as the sound of a shot. The subonic 22's are sitl lethal at 125m, (eventually) with body hits. I went with a 20 and 30 rd mags of this 22 ammo for my BOB, More of these rds are buried at my BOL.

[@kjay8125]

Grand thumb She's definitely talking about grand thumb 🤣😭I've been saying this for years I just don't have a platform to talk about it

[@lukews1519]

"Plastic and Elastic deformation", "Modes of failure" Alright bro, we get it, you're an engineer

[@austinmcwilliams3412]

My SHTF and self defense stocks are split between two rounds: 55 grain V-MAX rounds for unarmored/soft targets and varmint control, and 77 gr IMI Razor/MK262 for barrier defeating/longer range shots, especially out of shorter barrels. Shout out to SAWS Survival Applications Weapons Systems.

[@miltechmoto]

Ultimately shot placement is the most important factor. The problem with law enforcement rounds is they are all designed for short range encounters with civilians. Not military threats. So ultimately they dont make much sense where volume of fire is high. Nor are they particularly superior at long ranges or for armored targets or targets behind cover. Personally I prefer lighter rounds for shorter distances and shorter barrels. A short barrel should probably use a lighter bullet to keep velocity above 2200 fps for longer distances. Solid copper rounds tend to be the best all around in my opinion, but as a substitute for m855a1. M855 green tip tends to be a good cheap round for long range, for man sized targets, allegedly. At least better than m193 and more cost effective than 77 grain open tip. I think these heavier bullets are kinda going backwards in logic. Theyre making trade offs that dont make sense when fighting an army. And that could be due to the fact that the gwot stuff was not really a total war scenario against a standing army. Spec ops guys can afford to get picky and complain about how a dude slumps over after getting shot. But look at ukraine and the distances they're shooting at. They're either plinking people across the clearings and wondering if they hit them or they fell down, or theyre unloading at close range until the threat stops being a threat.

[@mrs.vasquezz]

She sounds like she's about to cry😂

[@Boondockballistician]

Brock made me nervous 😅

[@mrs.vasquezz]

@@Boondockballistician uh-oh KZbin Crush

[@MasterChief0093]

the effing dog footage at the end lmao. the both sets of legs to rotate thing. i died

[@snakebite210]

Brassfacts Friday 🎉🎉🎉

[@Omaba_Baba]

Brass Facts.... Thank you, dude. Great video. Jessie was a fantastic guest. I had no idea that temporary stretch cavity really was just cool to look at and not that important in terminal effect. I was entertained AND I learned something. Fuck yeah.

[@damagician0099]

Ok, now have her explain the black magic going on with 8.6 😂

[@Halal_Dan]

"Spin energy!" *explodes your suppressor*

[@rifleshooterchannel208]

That’s just a myth Kevin brings up to steer the conversation away from the fact he’s literally a creepy stalker.

[@ALovelyBunchOfDragonballz]

​@@rifleshooterchannel208I'm no fan of kevin, but punching clean through 3 gel blocks isnt a myth.

[@rifleshooterchannel208]

@@ALovelyBunchOfDragonballz So what’s that? Like the ballistics of .45 ACP ball? Fackler shows 7.62x39 ball generally punches *30 inches* of gel. It’s not some amazing feat for some super heavy projectile going too slow to expand to penetrate deep (too much actually) into gel.

[@rifleshooterchannel208]

@@ALovelyBunchOfDragonballz Not to mention the twist rate has literally nothing to do with it so long as the projectile is stable.

[@aries144]

I would love to talk to boondockballistician about this, but my understanding is that bullet yaw in air is largely a function of bullet runout and barrel manufacturing quality than an intrinsic property of different bullet types. In the past there was discussion of the effect of bullet yaw on M193 performance, as I recall, with greater angle of attack resulting in shorter neck length. Also, not all 75gr/77gr OTMs are created equal. While Sierra 77gr was used for the MK262Mod1, the last gel tests I saw (years ago) showed that the Sierra 77gr Matchkings tend to start to yaw much later in gel than similar loads using Nosler 77gr or Hornady 75gr projectiles. The Nosler and Hornady rounds started to yaw and fragment within 2" of penetration, which is more what you'd want, and they still met the 12" FBI requirement for overall penetration.

[@Boondockballistician]

barrel manufacturing is absolutely a huge factor in that! but ammo designers can still play a huge role in affecting that outcome. things like cannelures can be placed on the projectile in order to decrease bore resistance, the amount of contact the projectile makes with the bore (so really the ogive angle), and also just jacket materials and manufacturing processes! machining a round will help remove any unnecessary friction and help stabilize the round better both in barrel and in air. theres a lot of nuances to the whole design process and both weapon and ammo designers need to be cognoscente of what the opposite group is doing and what constraints that might apply.

[@slaughtersenpai1951]

tldr; it doesn't really matter within 200 yards.

[@addisonfreitas785]

Hell yeah! This is the collaboration I didn’t know we needed!

[@ScottCubs12]

Why watch on your lunch break when you could watch it on the toilet while you’re on the clock?