.40 S&W vs. 357 SIG (Part 6) (Underwood Extreme Penetrator Test)

[@charlesdickens8599]

An excellent test of hard barriers with two very powerful rounds. Thank you for doing this.

[@dalerobbins4737]

Love your videos you KEEP IT SIMPLE AND TO THE POINT GREAT JOB

[@ThePenetrationChannel]

Thank you for watching.

[@TheKhanhhoa]

Nice Job !!!

[@elsea8901]

40 at the range... -quick barrel change- .....357 for the carry

[@remasteredretropcgames3312]

Point of impact changes. Recoil is roughly the same but projectile loiter is considerably different. Basically the slower .40 takes longer to exit the barrel under the same recoil, so it lands higher than .357 sig at defense ranges which is counter intuitive because as range opens up, the sig also drops less. This is not good advice.

[@robertlecrone4938]

@@remasteredretropcgames3312 i have both barrels for my p226 and the 357sig definitely changes the point of aim couple inches low

[@remasteredretropcgames3312]

@@robertlecrone4938 yep. Saves ppl the hassle if they know in advance. Cant just change the barrel out and you're good. You have to change the sight too or its not acceptable.

[@ws1807]

Over penetration can hit innocent bystanders. The object is to get optimum penetration and dump all the energy and imposing as much trauma as possible. That's why highway patrol use 357 sig for patrol and 40 s&w for urban carry.

[@brandonsumter2003]

good video. even tho 357 SIG won I still love the 40cal its my favorite caliber

[@boedude8496]

357s didn't really win. the 40 was an embarrassingly weak load. but that is how they rig the caliber 'game'

[@justinmeasday8930]

nice head to head. I shoot 357 sig in several m and p and glocks. All the pistols are originally 40 cal. I like the versatility of just swapping the barrel out.

[@ThePenetrationChannel]

me myself and I excellent. thats the best of both worlds. thanks for watching..

[@Denis-mg1wj]

Did you ever try shooting 357 sig trough 40 S&W barrel ? I heard one guy said he tried one mag and it worked but he wasn't sure if it was safe ...

[@SINESTERSERPENTSIXXX]

its not safe at all 40sw has a chamber pressure of 9k psi 357 sig by comparison is 35k psi.

[@lurewars]

SINESTERSERPENTSIXXX ...

[@leonardkimble5525]

SINESTERSERPENTSIXXX. Yes it is.

[@Danmandingo]

*So basically to sum it up...* *40S&W - Slightly Bigger HOLE. .357SIG - Slightly Deeper PENETRATION.*

[@spookypunky]

Isnt that the trade off for ALL calibers?

[@christopherarnett2851]

As long as it gets the job done the the SW 40 is on with me, just use hot loads for the 40 Cal.

[@Danmandingo]

@@christopherarnett2851 I use the Corbon 135gr 40S&W. They have more energy, than the Federal HST coming from a .357SIG. If that's "short and weak", that is absolutely crazy.

[@paulscountry456]

Not slightly bigger it is 27 % larger area,the 40 is doing more work overall.

[@williamcrawford7621]

10mm would make a hole the size of a 40 but with the penetration of a .357 sig

[@wesleyhalpern184]

357sig is meant to have a little more power and penetration than 40. It is very comparable to 10mm depending on the load.

[@bdm1000]

Very cool. I'd like to see a comparison of the .357 sig in 65 and 90 grain xtreme penetrator rounds which have some serious velocity and power.

[@dadtalkwithsonknowoneknows2954]

The 357 SIG it's best rated with a 124 grain bullet

[@Wildwestwrangler]

​@@dadtalkwithsonknowoneknows2954 copper is not as dense as lead, so with the all copper penetrators you have to use a lighter weight bullet vs a standard bullet, but at the same time where with a regular hollow point the more you speed them up the less penetration you get, you don't have that problem with penetrators or defenders!!!

[@Ang3lUki]

no big surprise. a high pressure bottlenecked round is great at penetration.

[@nigonkouk1770]

That's what she said' ;|) LoL

[@KT-yg4zo]

This is exactly what I was looking for. Currently using .40 S&W 140 Underwood extreme penetrator as my EDC

[@rafaellastracom6411]

Great video, very informative. I like the 357 SIG more and more.

[@prasinos37]

Personally, I believe the 357 sig is the best pistol round in the world.

[@jayyoung5423]

My personal carry, I would have no other, ever.

[@chrislettenmaier6822]

I agree ☝️

[@vladmordekeiser1054]

10mm. Versatility. Change the ammo and it can serve for anything.

[@jamesritch5245]

I wouldn't dare go that far...

[@chrislettenmaier6822]

James Ritch I own 6 different calibers in hand guns the 357 caliber is the best all around caliber for personal caring. 30 caliber is with 22 caliber as the most made round out of all calibers . If you don’t believe me get a reload book and look at the rounds in 22 and 30 caliber family. Then look at speed per foot of the caliber per all other sizes.

[@kentwilliams4152]

Thanks, Gotta Love the Underwood Extreme Penetrators and extreme Defenders. :)

[@ThePenetrationChannel]

Thanks for watching. I have a test video this weekend featuring the .40, 357 Sig, and 10mm using Underwood Extreme Penetrators.

[@doug3805]

I am planning on a barrel conversion for a Glock 20 to 357 Sig. This sealed the deal for me. Thanks for the video

[@ThePenetrationChannel]

Thanks for watching.

[@D-A-1776]

Love both of these. Wish more people made .357 SIG pistols. I carry a.40 for my woods gun we only have black bear and coyote where I live so it's more than capable

[@ThePenetrationChannel]

I'm pretty sure some hard cast .40 would handle just about anything on 2 or 4 legs. Thanks for watching.

[@D-A-1776]

@@ThePenetrationChannel . That's what I carry in it also the extreme penetrators

[@charlesdickens8599]

One additional request: 10mm is the round that I carry most frequently on the trail; if you get a chance to test a G20, G29, or 1911 in full power 10mm that would be interesting. Thanks.

[@ThePenetrationChannel]

charles dickens Its in the works. thanks for watching.

[@sinqros]

I wonder how the Underwood 125 grain flat nose 357 sig would do? I think it's 1475 fps

[@samtaylor7800]

Kj Guitar that would be interesting. id like to see that also

[@billyjack6658]

Could you please do the same test using the 357 sig. extreme penetrator in the 10 mm extreme penetrator? Thank you great video

[@ThePenetrationChannel]

Yes. I have some on order. But Underwood is a little behind on their shipping right now, which I can totally understand. Thanks for watching.

[@dlsmpsn]

I don't know if it was available when this video was made, but the Extreme Defender was shown to be superior for personal defense in gel tests. That's what I use now.

[@billyjack6658]

Would you be able to do the same test for the 357 sig. in the 10 mm with the extreme penetrator? Anyway great video very informative thank you for taking the time to put it together

[@antouab221]

Another awesome video, thank you. Yes, 10mm would be a game changer and get that bullet faster and deeper, but hey, we won't know for sure until it get's done, so we are waiting for you man, actually, the whole world is probably eager to see this match of 10mm vs sig 357 and .40 S&W.

[@user-lq6tv4pq8f]

I bet they'd both stop on the 5th panel.

[@d-unit-outdoors]

Please do this same test with the same ammo in 10mm. Thanks.

[@357Franknitty]

He did. It was a tie!

[@d-unit-outdoors]

@@357Franknitty looks like 10mm won. Both great rounds though.

[@guardianminifarm8005]

Thanks for the time...energy & resources invested in the videos. We are definitely helped by all the data gathered. We sure appreciate it. The info gained actually encouraged me to get a 357 Sig barrel for my 40. I am really impressed. Have you shot Underwood 357 Sig 65gr. Extreme Defender? If so...what are you thoughts. Thanks.

[@ThePenetrationChannel]

Guardians Minifarm never tried those. Will have to take a look at them. Thanks for watching.

[@ronald209]

As I am multi caliber capable (9mm, .357 Sig., .40 S&W, 10 mm, and .45 ACP -- soon to add .460 Rowland), I'd be interested in the test accross all of the typical pistol calibers. Also the wheel gun magnums!

[@nunya7319]

Interesting video. I actually would have guessed the .40 going through more. With that said, my Always carry gun is a Glock 33 in .357 Sig loaded with HST Keep up the good work.

[@DomRivers67]

It would be interesting to see the 7.62 Tokarev vs 357 sig

[@HandMadeRoyalty]

I almost bought a tokarev... Still debating on it I like the m57

[@darrenbishop4327]

We need some modern guns as ammo in the tokarev caliber.

[@TOBORE8THMAN]

Why is the advertised velocity of the 140 grain 40 S&W (1200 fps) slower than the 155 grain 40 S&W JHP (1300 fps)? Seems to me the 140 grain projectile should be hovering around the 1375 fps range.

[@ru2yaz33]

Same test with the Underwood Xtreme Penetrator with; 9mm, 45 acp, .40 S&W, .357 Sig, 10mm, and .357 magnum. Another interesting test would be comparing the Underwood Xtreme Penetrator against the Underwood Xtreme Defender on the Aluminum/metal panels.

[@bigsean2473]

try the 200gr 40 by double tap. its some really nice stuff

[@TakeDetour]

Exactly the results I expected.

[@joes.7536]

I like and own them both. The 357 sig is the best barrier penetrator. The 40 is devastating in soft tissue. I’ve tested some 165-180g loads with projectile expansion over .8” 357 sig loads tend to stay below .6” expansion. Either way they are both great Rounds due to the case and extreme pressure.

[@genericproductions5165]

Test the 357sig against 10mm and 357mag

[@ccoddington]

Yes please!

[@ChoneyPony]

Yes and test them on a dead grizzly bear.

[@PaulVerhoeven2]

Several dit versions on 10mm and 357Sig - different manufacturers make very different ammo.

[@terryvilhauer9228]

357 still coming out on top bud

[@ninjascout468]

Only way for a true test is to take the .40 out of casing grind down to same grain as .357 sig and retest . All the ammo is different grains so none of these tests are accurate til you match bullet weights , mite as well use 22lr vs .40cal 60 grain civil defense rounds . Thanks for trying tho .

[@Mike-wh9dq]

ninja scout I agree ...this does not compare apples to apples as is evident before the shots are fired.. The major differences in energy is the telling tale... A head to head test of equal energies is more informative even if using different bullet weights. Only then could one determine which "bullet" performs better.

[@user-lq6tv4pq8f]

Right BUTT you're not gonna find different calibers with the same weight.

[@Grynslvr2]

@K Hawk wrote: "...different calibers with the same weight." Everyone keeps skipping over this. These are DIFFERENT CALIBERS. Since they have different diameters, why are we worried about having the same weight? To keep this scientific, Fudd's first law of motion states that "If you push anything hard enough, it must fall over." There is a little known corollary to that law which states "skinny things penetrate easier than fat things." That is why nails are long and thin instead of being short and squat. I could therefore have predicted that a .357diameter projectile would out penetrate one of .40 diameter. All silliness aside, this was a test of two readily available calibers which fit into the same niche market. They are both primarily serious business rounds, rather than target rounds, or test rounds. Both are from the same manufacturer. Both are designed for maximum penetration. Both fit into the same sized firearm. I consider this a valid test when keeping in mind all those caveats. Now if I am ever attacked by a gang of sheet aluminum...

[@TeranRealtor]

It seems to me - that a valid comparison would be between "If I was to carry a 40 cal, here is the ammo I'd probably use" VS "If I was to carry a 357, here is the ammo I'd probably use." I don't think I'd ever buy ammo (for any gun) and alter it's characteristics by filing down some of the weight off the bullets.

[@FoulPet]

@Keith bridges 40 would have had the same results as the 357 IMHO with a 135 grain.

[@NoWr2Run]

A lot better test this time, very good job.

[@gustavozaratini]

your channel is awesome! please keep posting videos like that! Looking forward to seeing more videos with 9mm penetration tests !

[@ThePenetrationChannel]

Gustavo Zaratini Constantino Will do. Thank you for watching.

[@billyjack6658]

Did you do a velocity reading on the immunization that you used for this test? If so what were the velocities?

[@GeneGarzaJr]

Excellent choice of ammo for this test!

[@bobsmoot8454]

The 357 sig is a lot more powerful than I would have guessed, TBH, I wasn’t really aware of it, being a shotgun/rifle guy I have handguns for others to shoot. I might have to rethink handguns based on the 1400+ FPS and better than 500 ft-lbs is pretty decent for a compact weapon

[@ThePenetrationChannel]

Its easily one of my favorite calibers for accuracy and performance. Thanks for watching.

[@billyjack6658]

Hello great video. I understand that the muzzle velocity of the 357 sig. is 1450 ft./s. Did you get an actual reading from that ammunition ? If so what is it

[@NRecob]

Thank you. Just ordered some of this Underwood in .40

[@ThePenetrationChannel]

N_ R awesome round! Thanks for watching.

[@magstiger]

I would love to see this test done with a 9mm underwood extreme penetrator. It seem like the 357 sig and the 9mm are penetrating more than the 40 s&w and 45 ACP in most of your test. Thanks for the awesome videos.

[@Wildwestwrangler]

yeah they penetrate more, but do less damage.

[@kevinrichardson8859]

​​​@@Wildwestwrangler penetration IS damage 😂 & energy = damage🤔 40sw "damaged" 4 panels...357sig "damaged" 5 panels...5 is MORE than 4 isn't it?

[@thundrune1554]

@@kevinrichardson8859- so I guess if you got hit by a dump truck going 100mph since it wouldn’t “penetrate” you there would be no damage and you’d walk away from the encounter. Or the more likely result is you’d be a closed casket splatter which should lead you to personally conclude that you might not quite understand what you’re talking about…. Because you clearly don’t…. 🤯🤯🤯🤯🤯

[@kevinrichardson8859]

@@thundrune1554 dump trucks and cars are NOT good analogies for firearms ballistics...good try though..it sounds good to the less intelligent

[@kevinrichardson8859]

If....IF...you have access to a 357sig and a 45acp handgun..AND can use just simple over the counter fmj ammo...and can LEGALLY go somewhere and do some penetration "tests" for example a simple trash dumpster...or any heavy gauge sheet metal and shoot both...and see which one "daylights" (pierces) the metal and which one leaves a big dent but ricochets....it is then MAYBE you will have a better understanding of firearms ballistics and terminal performance and then stop your silly comparison of dump trucks with handgun ammunitions ....speed kills!!! ✌ ☮

[@donmurray8440]

Why do you use such a bullet grain difference in your various test the under wood ammo 135 jhp would give the 40 S&W better result it's faster better foot lbs would it not. .?

[@danahall1575]

Great video. Thank you. Now I know the difference. Thanks again!

[@paulgadson3046]

The 40s hole was a lot bigger then the 357

[@thenewgunnertrw2025]

They aren't that different. The actual size of the 357sig is .355" the .40 is well .40" a difference of .045" to put that in context, notebook paper is about .005" so the difference is only 9 sheets of paper. When talking about diameter, split that 9 in half... so 4.5 sheets of paper wrapped around the 357sig bullet makes it the same diameter as a .40S&W.

[@LarryeWhite61]

0.045 is all

[@andrewbrumagen3479]

I thought that too.

[@Frenchfrys17]

@@thenewgunnertrw2025 You forgot that diameter is a linear 1 dimensional measurement while surface area is a 2 dimensional measurement. The area of a circle that's .355 inches wide is 0.1 sq inches. While the area of a circle that's .4 inches wide is 0.13 sq inches. So the .40 is making a 30% larger hole.

[@coreykobak3041]

@@thenewgunnertrw2025 40 is bigger then 9 that is what 357 sig is a 9 bullet with necked down 10mm casing

[@theodorecendejas1343]

How about comparing Underwood xtreme penetrator rounds to underwood hardcast

[@ThePenetrationChannel]

Now that's a great idea. Thanks for watching!

[@wemcal]

This is a great video... good rounds to compare.. that 40s/w ain’t nothing to ignore

[@craigasutton]

Besides the 40 cal Underwood Penetrator you test, Underwood makes a 40 cal Defender - lighter, but faster projectile. How do those two rounds compare, and does the Penetrator penetrate too much on people vs. medal plates, so as to be dangerous in a public setting?

[@robcommorat2084]

Great info! ,I switched to 357sig yrs ago, keep the 40 for practice and JIC. I would really like to see how the 357 mag (GP100 4") underwood 180 gr hardcast vs the 10mm (G20 or P220) 200 gr hard cast...Call the southern bear gun in the woods comparison

[@clyde3576]

finally someone does this review!!

[@hlalakar4156]

These rounds work through supercavitation. They should be able to shoot through water with very little loss in velocity. I'd like to see a video testing that.

[@jesserodriguez8504]

I like the way the 40 has the core series palm swells I got one put on my work pistol

[@gsb005]

alrite, sig wins fair and square. i carry 40sw and completely ok with it.

[@lylelafayette3853]

gsb005 idk tho... more diameter on .40. Hit hard and tore the last plate 357 went through.

[@zacharywatson6296]

Not just that but its much different against a person as opposed to metal. Penetration isnt everything in that case

[@mcpiddler1135]

I may be wrong, but aren't extreme penetrators intended for big game use? I understand the entertainment of these tests but I'd like to see edc loads tested if the intent is to compare relative power of the different calibers under real world scenarios. Thanks for the effort to produce this series of tests. They are entertaining and informative. So far, my love for .357SIG has only been justified.

[@andrewbrumagen3479]

I have a 92x (9mm) because we have close neighbors like a townhouse and old people across the street so I don't want to harm anyone. I ordered a couple of federal hollow points still in the box. My son uses federal rounds only. He has a good job.

[@billyjack6658]

Did you get an actual chronograph reading of the velocities of this ammunition? I know what the box says I’m just wondering what you actually got out of a 4.25 inch barrel

[@ThePenetrationChannel]

No. I haven't afforded myself a chronograph yet. It's definitely on the agenda though. Thanks for watching.

[@kentwilliams4152]

It looks like the .40S&W “Punched” Through the first panel while the .357 Sig “Fused” its way through.

[@MrJFF411]

The .357 Sig wins again - If you tested the hottest Underwood load in each gun the .357 would blow that .40 S&W out of the water !!!! The highest .357 Sig +P round from Underwood would go through every single one of those panels, with a unbelievable 2100 ftps. That is basically rifle velocity territory. Crazy stuff.

[@jerrysmith3516]

Would like to see you test the Barnes 40 cal 155 grain and also the Barnes 40cal 125 grain on this test

[@billyjack6658]

Thank you for getting back to me. So what what are the velocity readings for the 357 sig. extreme penetrator? If you like maybe I can send you my Clock 20 so you can test it. Let me know. Of course I would have to send her to an FFL dealer

[@pimpminister1981]

how about a video of a 10mm vs 357 Sig?

[@spookypunky]

Why?

[@diamondrmp]

You do understand that after the first shot the panel fell back which changed the whole test?

[@krismueller7988]

If at all possible, with all due safety precautions, how about concrete block?

[@coolvideo28]

Love these 357 sig tests keep them coming. Would love to see a series of videos with the difference in the big 4. 9mm,357 sig,40 cal and 45 acp against real world objects. For example have a couple small scale walls that would be in a house and maybe get some car doors from junk yard maybe a windshield. Just all types of things that could happen in a real self defense situation.

[@coolvideo28]

One other thing think the M&P Pro/core has a 5 inch barrel so if that was what you used it would explain why it did so well compared to 357 sig. you could get a 5" 357 sig barrel for the pro/core M&P and it would be a more straight up test. I bet the 357 sig would make it through that 5th panel.

[@ThePenetrationChannel]

I have the M&P 40 pro series with the 4.25" barrel. Thanks for watching.

[@tonycruz2450]

Great video I carry a 40 in the US and abroad it does great job. Say anything you want I love my 40. I'm very worried about over penetration. Also 40mil ammunition is more available than 357sig in Central America have a great day finding 357sig.

[@ThePenetrationChannel]

I'm sure "40mil" ammo would be quite expensive as well. Thanks for watching.😂😂😂

[@tygerfrodo]

Thanks for this video. I’d love to see a side by side of these two rounds into ballistics gel.

[@n300zx931]

Never use 180gr. In .40s&w the 357sig is a better round, but the .40 does horrible in 180gr use 155 or 165gr.

[@ThePenetrationChannel]

n300zx931 those 140gr underwoods really suprised me. Thanks for watching.

[@rickfoley5596]

n300zx931 I love the performance I get out of underwood ammo full power loading of their 180 grain 40 at 1100 fps big hole and more them enough penitraton for person. If I need deeper penitraton I will switch to my 10mm

[@SINESTERSERPENTSIXXX]

rick unless you carry both firearms its hard to be able to trade up for a 10mm when its at home and your already neck deep in a gun fight were you need the penetration.

[@AkiraNakamoto]

Penetration is not the same thing as damage. When you talk about shield/armor thickness against bullets, you are right. But if there is no shield/armor, then the amount of energy measured by foot-lb wins.

[@spookypunky]

@@AkiraNakamoto That's just it. Most of the popular handgun calibers have roughly the same ft lbs of energy. I'm willing to go 9mm with less recoil and get more accurate hits on target vs fewer heavier loads.

[@ericoglesby2614]

Having owned both calibers, I would say for guns in stock form, the 357sig obviously offers hotter rounds that deliver more FT lbs energy, this is a fact. Also, the 40+p stuff I wouldn't feel safe in most stock guns(they suggest aftermarket barrels for hot 40 rounds etc). That being said, a 357sig case is actually longer, and has thicker casing walls than a 40 casing, for added strength. A 357sig is not just a necked down 40. Both are great, but I would place the 357sig and 10mm up at the top as far as energy, with 45 and 40 and the 9 not far behind. All get the job done!

[@ThePenetrationChannel]

Great analogy. Thanks for watching.

[@mgsharnhorst]

Good comparison...great test

[@thermography5217]

Wonder what the .40 would do out of a 16" barrel?

[@daniels1532]

about the same as would out of a 6" barrel... Suck.

[@petegrunert9230]

I’d like to see you add a 9 mm plus P cartridge in the mix

[@FilmThePoliceFTP]

Damn you actually have an M&p 357 sig. I had the compact and it would lock open sometimes before the mag was empty... I sold it and bought a Glock 33 and have not turned back. Still have my m&p 2.0 FDE 5 inch with a 357 sig barrel though and I’m thinking about doing the same but with a shield.

[@ThePenetrationChannel]

Yeah. I had the 357C back in the day. I traded that off and bought the fullsize. It is now the only 1.0 I still have left. I replaced them all with 2.0s. Thanks for watching.

[@FilmThePoliceFTP]

The Penetration Channel you should be able to use the 357 sig barrel in a 2.0 40 cal. If you’re like me, you probably prefer it with the 357 stamp on the slide, but the 2.0 lower is a bit more durable. Just FYI.

[@ThePenetrationChannel]

@@FilmThePoliceFTP that's true. I definitely like the 2.0 model more than the previous gen.

[@FilmThePoliceFTP]

The Penetration Channel also, if you’re interested in ballistics and FPS.. check out KKM precision. If you want to get some good power out of those underwood rounds (especially the 65 grain 357 sig extreme defender) KKM will make you a 5 inch barrel that fits the pro series 1.0/ FDE 2.0 40s that get 2200 plus FPS out of the 65 grain round. I’m currently waiting on a 6 inch 357 sig barrel for my Glock 24. I am also looking into the 357 sig just right carbine... very curious to see what they’d get on a 17 inch barrel.

[@thomaspaine9420]

Would love to see this perform on level 3a soft body armor. 10mm xp's can penetrate 3a and 1.25 bullet proof glass. Underwood loads a Lehigh defense extreme defender round that's lighter to either 90 or 75 gains that's over 1600 fps and close to 700 ft/lbs. I've wondered if that could penetrate body armor due to the speed.

[@JasonParker_114]

Looks like the metal transferred onto the tip of the round from the barrier panels, not actually a deformation of the bullet.

[@billyjack6658]

So again could you do that same test and add the 10 mm extreme penetrator into the mix?

[@EBB47]

I'm trying to find a extreme defender in 357 test

[@Texan-1911]

Real FAIR SHAKE for that 40 love the content

[@pooky2565]

Good job great test

[@2002firstborn]

Wow people will always find something to bitch about same gun same ammo brand not enough for some people. Great video man keep it up

[@ThePenetrationChannel]

Thanks for watching!

[@engine22emt]

This whole series is very informative Our local Law enforcement agencies are going from 40 to 9!mm obliviously thy don’t watch your channel I have to sig sauers both in 357 Sig I use underwood ammo

[@travisj.1938]

Great vid man. You got a new subscriber in me. Keep up the great work can not wait for next vid.

[@ThePenetrationChannel]

Awesome! Thanks for watching, and subscribing. New tests coming soon!

[@TheSouthpawSharpshooter]

This video needs more views

[@ThePenetrationChannel]

Well thanks for adding yours to it.

[@jbar7286]

Add 556 to the mix. Curious how far it will penetrate compared to handgun calibers.

[@robduell3856]

When you set up your side by sides you need to support the top between layers abd try again.

[@billyjack6658]

Did you try this with a 10 mm? If not will you?

[@GaveMeGrace1]

Oh wow! I’m surprised. Why? Because when you did 9 v 357 sig v 40 v 45 v aluminum plates, firing only white box ammo, your 357 Sig penetrated to and stopped at the 7th and so I expected even better performance. Any theories?

[@mcnultypride]

awesome vid, i would love too see a video where you put ballistic gel or wet pack behind behind a car or truck door.. that would be pretty interesting trying out jhp's and fmj for both the 357sig and the 40s&w

[@maxtheroofer8004]

Seems to me like in the .40, a 140gr projo going 1200fps is pretty watered down, based upon the fact that the .40 can safetly launch 200gr at 1000+fps and 180gr at 1100+fps Maybe this has to do with the long solid copper bullets taking up such a large amount of space in the case

[@beachsidebum]

Hey! What light do you have on your M&P? Can you tell me the Brand/Model/Output? I like how short it is! Also Glad you made this vid, it confirms what I was thinking. It will def over penetrate inside a house type setting, and I dont want my ammo to just poke a small hole thru then just go right out not causing fragmentation or tumbling. This type ammo would be more for firing into a vehicle being able to penetrate windshields and sheet metal.

[@ThePenetrationChannel]

Here's a link to the one i have www.midwayusa.com/product/678567/insight-tech-gear-x2-sub-compact-tactical-illuminator-flashlight-halogen-bulb-fits-picatinny-or-glock-style-rails-polymer-black I also like the length of it. I hate lights that stick out further than the barrel.

[@beachsidebum]

thanks!!

[@FilmThePoliceFTP]

Please try the underwood extreme defender 65 grain 357sig

[@timjohnson8390]

Haha just found this channel I love the name. Who doesn't like penetration and now it's got its own channel lol

[@strikerfired6242]

Awesome video!

[@ThePenetrationChannel]

Striker Fired thanks for watching!

[@christopherrobin9472]

I would like to see .357 mag vs 10mm

[@honda116969]

cool video! thank u. i had no idea they were so close in penetration

[@subtronicssound8773]

If it would’ve been a 125 grain 357 Zig Vs 147 40 caliber would it out performed or be equal

[@victorrojaspardaian7695]

And 44 magnum vs 357 magnum?

[@ParanaSlim52]

I'd be interested in comparing the Underwood #811 .40 S&W 115 gr with the Underwood #645 .357 Sig 115 gr, . Equal bullet weights, very similar Velocity and Muzzle Energy, and only a slight difference in Sectional Density. I think that would be a better comparison, YMMV? Those Lehighs are some serious projectiles in either case!! I enjoy your test medium much better IMO than milk jugs, fruits and vegetables, and baloney packs.

[@DJ-jq8if]

great video thank you very much. well detailed and very controlled test.

[@ThePenetrationChannel]

Thanks for watching.

[@billyjack6658]

@@ThePenetrationChannel Are you still making these videos?

[@ThePenetrationChannel]

@@billyjack6658 yes. I uploaded a 357 sig vs 10mm video last month. I'm currently waiting on some ammo from Underwood to get my next test done with the extreme penetrators.

[@billyjack6658]

Did you do the same test but the 10 mm?

[@ThePenetrationChannel]

Haven't yet. Still trying to get my hands on a Gen 5 Glock 20.

[@edt8535]

Hey great video-thank you!

[@manuelleos1007]

Finally someone uses a lighter faster bullet than the 180 gr. I always use 165 gr on pratice ammo.

[@ThePenetrationChannel]

Manuel Leos thanks for watching.