Black Necks

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[@MichealJACKSON-ly6cd]

Im a 33 year veteran diesel technician. I listen to you videos while I build motors to relieve the tedium of repetitive activity. Plus I hand load ad so on. I watch podcasts from hornady, vortex, Eric cortina...... I have to say that as an chanel thats not grossly sponsored your Chanel is top shelf. I dont have a lot of money to contribute but i can say thank you for the time and effort you and your lady put into this.

[@markandsamafterwork]

Thank you sir, glad you like, Cheers and all the best.

[@johndiblasi4803]

This, in my opinion, is your best explanation on such matters. I always wondered about that carbon ring. Thanks Mark.

[@markandsamafterwork]

Thanks John, glad you liked, Cheers

[@Fatman131]

Thank you Mark, I’ve been having this issue for a while, particularly with ADI brass even after I’ve annealed it. It seems to be a very fine line between dirty necks and clean but with signs of pressure. Your video has really given me something to work with, thanks so much.

[@markandsamafterwork]

Thanks Man

[@davidhandyman7571]

Thanks again, Mark. I always find your talks interesting and informative. Much appreciated.

[@markandsamafterwork]

Thanks David

[@tlloyd9325]

I run a lot of lower pressure, AA5744, in 45/70 and they soot up pretty good. If I switch to Unique it’s such a fast burner I don’t have any soot at all. Great info session as always thank you!

[@markandsamafterwork]

Thanks Man

[@pistolgrips]

Always good information. Succinct and to the point. Thank you.

[@markandsamafterwork]

Thanks Man

[@gilream]

Another excellent explanation Mark.. Thanks. I've hand loaded everything for two barrels in my 6.5 X 47L. Last summer I purchased factory Lapua ammunition for the first time ever for this caliber. The fired rounds came out perfectly clean at the neck! Which I scratched my head over. Im guessing the factory stuff was crimped. It grouped very very well but was almost 100 fps slower than my handholds with the same bullet. So I have lowered velocity in my handholds and they group amazingly!

[@markandsamafterwork]

Thanks Man

[@geoffkeeler5106]

Very well explained Mark. Personally I never experienced this phenomenon much when I was shooting, but then I was using the notoriously high pressure.45 ACP! Seriously though, speed of initial pressure rise, neck tension, even things like bullet inertia will affect all of this, as you explained. Thanks for another good video!

[@markandsamafterwork]

Thanks Geoff, Cheers

[@paulharding1621]

Great explanation of the issues and reasons for sooty necks. My 6mm REM Ruger No1 always gives slightly discoloured necks. I use full charges of RL22 which is on the slow side but with 100gr bullets I get half MOA groups so I’m not too worried about the neck colouration issue.

[@markandsamafterwork]

Thanks Paul, Cheers

[@opsoverseas]

Clarity, physics, logic, why weren't you teaching at my school?! Well done Mark, another gem!

[@markandsamafterwork]

Lol, thanks man, Cheers

[@PapaDon850]

I saw the title for this yesterday and just got back from the range this morning. I noticed my brass was black around the neck on my new .308 AR10. I made a cup of coffee and had to watch this, and I feel better now. 😂

[@markandsamafterwork]

Lol, Cheers man

[@ironDsteele]

I've had overly sooty cases from using powder that's too slow. For example, I once loaded 55gr FMJBT in the 5.56 NATO using VitaVouri N135 powder. The load was as compressed as I could make it and they were heavily crimped. I had soot all the way down the side of the case onto the case head and covering the primer on some cases. I knew after firing a few this wasn't acceptable and I couldn't keep shooting them but here's the interesting part. The load was superbly accurate and the ES was pretty good. My velocities were around 3050 fps out of a 16.5" carbine. Thanks for covering this topic, I haven't heard it discussed in this detail before.

[@markandsamafterwork]

Thanks Man, Cheers

[@Dwayne7834]

Thanks for sharing this information. 👍🇺🇸

[@markandsamafterwork]

Thanks Dwayne

[@andrewsmall1746]

I had it experimenting with magnum primers in a worn out 243. Powder shortages in the UK so I was using Ramshot Hunter (ball) powder. 243 barrel after 4000 shots was probably smoothbore for a fair bit but the same load with standard primers wasn't as bad.

[@markandsamafterwork]

Lol, cheers

[@Lucysdad66]

I have brass that I use that I got from my dad after he used it for about 25 years and I've had it for probably the last 20 years the cals are 270 and 22-250 most of it is Remington and some win

[@markandsamafterwork]

Thanks Man

[@willemvantsant5105]

Hi Mark, I fired and resized 5 times and scrapped the brass, didn't want to experience case separation. Didn't know you could anneal the brass, thanks for the info.

[@markandsamafterwork]

Cheers Will

[@davesullivan972]

I use a straightened paper clip with a 1/8" bend (L) on the end and run it into the case to see if the case is thinning above the base!

[@gristlepounder]

I've gone over 20 reloads on Lapua for F class competition by annealing. Use paper clip method below or bore scope to inspect.

[@lenniephillips9747]

I didn't think that it was a problem, but,thanks for the video explaining what actually happens, interesting to know

[@markandsamafterwork]

Cheers

[@paulvandenberg5341]

Yes, I do see more on low powered loads. I do very light loads for practice and harvesting live stock. 30/06 at ≈1,000 fps with 110 grain cast bullets.

[@markandsamafterwork]

Thanks Paul

[@bobsmyself]

Great bit of information…especially the relation to crimping and case fill.

[@markandsamafterwork]

Thanks Bob

[@nunayobusiness3384]

Yep! I agree as to crimp versus non crimp, I had an issue and realized it was also head space and slight carbon buildup on an old 30-06. My brother borrowed my rifle and when I got it back was when I first noticed it but he also ruined rifles crown because rifle never shot the same. I went from a sub MOA to bullets all over the place.

[@markandsamafterwork]

Lol, thanks Man, Cheers

[@ACantu-bl4sw]

What I've noticed with my brass is more carbon present when using double-base powders, especially ball powders. So two ways to get around this is to use single base powders or nickel-plated brass. Besides that, everything was spot on. Great info!

[@markandsamafterwork]

Cheers

[@54Mizery]

When I get that, it is usually time to anneal or look at increasing the neck tension.

[@markandsamafterwork]

Thanks Man

[@charlesmckinley29]

Thanks Mark. YT did a survey question on if this was a good recommendation for me.

[@markandsamafterwork]

Awesome, Cheers Charles

[@peterblacklin9174]

Good all round info. Just reloading my 6.5 Creedmore. A new perspective on what to look for to be consistent. Thank you.

[@markandsamafterwork]

Thanks Peter

[@308c]

All of my 308 subsonic loads come out looking like that. It worried me a little bit. Thanks for explaining the reasons.

[@markandsamafterwork]

Cheers Man

[@michaeljhanousek290]

Very Clear. Thanks Mark

[@markandsamafterwork]

Cheers

[@chrischiampo7647]

Great Explanation Mark Thank You 😀😊 😊👍🏼

[@markandsamafterwork]

Thanks Chris

[@WesternReloader]

Relevance as usual Mark thx!

[@markandsamafterwork]

Cheers Man

[@johngordey3305]

Great video, very informative, thanks!

[@markandsamafterwork]

Cheers

[@charlesbullee7215]

I couldn’t find any videos to address this problem. Purchased a new rifle recently and it seems to be a lot of carbon on the neck and some on shoulders. This video will presents a lot more options to help reduce this issue. Thanks for info.

[@markandsamafterwork]

Awesome, thanks Charles

[@shanelowe3902]

Excellent content, thank you!

[@markandsamafterwork]

Thanks Shane

[@georgedreisch2662]

Not to knock your statement of gas getting in front of the bullet as shown in your high speed video. I’ve found it also to be common, and especially with surplus guns, to have the rifling eroded at the muzzle. I suppose this is the result of repeated cleanings, sawing with a steel rod, from the muzzle. This is easily found with gauge pins, and remedied by moving the muzzle back the distance of the length in the wobble of the gauge pin and recrowning. I brought this up, as I suspect it may also be a factor in the gas getting ahead of the bullet, in your high speed video. Thanks for sharing. Cheers

[@markandsamafterwork]

Crown has a big effect on accuracy, but no effect on the necks an little to no effect on gas getting in front of the bullet, but yes that is a way to fix a poor crown, Cheers

[@JohnRoberts71]

Great content thanks for sharing. Very informative

[@markandsamafterwork]

Thanks John

[@untermench3502]

Good description.

[@markandsamafterwork]

Thanks Man

[@brianmorris8138]

Thanks for the information

[@markandsamafterwork]

Cheers

[@stevemccann6641]

My custom built falling block chambered in 223 does this with 4198 but still has produced some five shot groups in the .2’s 3’s and will average 1/2 inch 100 yard groups, so while informative it’s not a big deal.

[@markandsamafterwork]

Cheers

[@gb123-ej8wh]

Sooted necks is insufficient pressure to seal the case and powder fouling can get around the case mouth.

[@markandsamafterwork]

Cheers

[@Taty6260]

Great lesson man. Thx M&S 🇺🇸

[@markandsamafterwork]

Cheers Tate, thanks

[@ronaldwilson3503]

I was actually thinking of my Mosin doing this before I saw the shot clip. I take notice on the 147 grain and 174 grain surplus military loads.

[@markandsamafterwork]

Lol, Cheers Ron, thanks man

[@disquietedsaint]

Well done explanation!

[@markandsamafterwork]

Cheers man, thanks

[@adamswidwa2055]

Great material. 👍 I'm just starting my adventure with ammo reloading. Pozdrawiam z Polski 🇵🇱

[@markandsamafterwork]

Thanks Adam

[@heiner71]

I always see this kind of blow-by in my hand-loaded 45 Colt cartridges. They have usually very little propellant in them (originally a black powder cartridge) and almost the entire case is black after firing.

[@markandsamafterwork]

Yep, Cheers Man

[@Wheelchair-bear]

Thank you, I was wondering why my 1919 Model 96, 6.5 Swede was doing that, when I changed powders it wasn't as bad, I thought it was too much pressure, I was wrong...... now I know.

[@markandsamafterwork]

Thanks Man

[@terrancecomey2732]

I get that with my 338 Lapua with Retumbo,Thanks

[@markandsamafterwork]

Thanks Terrance

[@dan2304]

Also copper 1 oxide Cu2O is also black.

[@markandsamafterwork]

Cheers

[@MrGsteele]

Two thoughts: obviously, if you are firing cast bullets, there's the issue that your mold could be producing undersized bullets that - when inserted in the case neck - are expanding the case neck insufficiently to completely fill the neck portion of the chamber, thereby introducing the space for the unburned gas to infiltrate before the case neck expands; too-soft lead, as well, can fail to expand the case neck completely or shear lead from a sharp neck edge when the bullet is inserted, if the case neck is inadequately flared. As for annealing, not only could the stiffer brass retard neck expansion, but also the dark residue could be used as a sign that you are running your case necks too hard, working the brass excessively, and thereby inviting split case necks - which, during firing, can present a safety hazard. So - like primer indications - that could be an omen that it's time to anneal or toss your brass, or modify/improve your annealing technique. It's particularly problematic if you routinely full-length resize, because split necks are less dangerous than a case head separation or failure elsewhere on the case body resulting from excess cold working. Interesting video; thanks for bringing the issue up.

[@markandsamafterwork]

Cheers

[@waltersani4111]

nei libri di balistica , viene anche definito come un segnale di usura dell ' inizio della camera di scoppio , specialmente se diventa molto abbondante , ma può essere legato anche alla poca elasticità dell' ottone del colletto.

[@markandsamafterwork]

Thanks Walter

[@userJohnSmith]

I see powder marks up past the neck and shoulder with my semi precision rifles as well. Still hunting down cause/cost.

[@markandsamafterwork]

Cheers

[@glen1056]

I find alaint reloader 22 is the worst for carbon but in my 300w it shoots the best ? With imr I don't have any carbon but accuracy is off

[@markandsamafterwork]

Thanks Glen

[@dougb147]

Great video Mark, very informative. Are some calibres worse for this than other's? I am getting this on my .243. I will look at my loads and also try crimping as you have suggested and see if that helps. Cheers.

[@markandsamafterwork]

All can have this issue, otherwise all explained, Cheers

[@MScholtz]

So would a faster power be the obvious 1st solution to this. Use N555 and been considering N550 on my 6.5 creedmoor .

[@markandsamafterwork]

Sometimes, but all things are relevant

[@PassionforRifles]

Mark, do you anneal your brass, and if you do, how you do it?

[@markandsamafterwork]

We use the AMP annealed, Cheers

[@gpriceco]

How about Brasso cleaner for cleaning outer cartridge brass? Does this also soften brass to some extent? Have tried many years ago and no issues and brass has multiple reloads without annealing with reloads to very close to maximum pressures. Anyone else experience this?

[@markandsamafterwork]

If it works, leave in be, lol, Cheers

[@jcjustice3786]

👍👍👍👌

[@markandsamafterwork]

Cheers

[@darrenkingston9912]

Can you get primer in w,a ¿?????????????🇦🇺👍🤜

[@markandsamafterwork]

Nope

[@rogersmaland7077]

I ned an aniler.......

[@markandsamafterwork]

Cheers

[@MIKESTREED]

Looking at these cartridges I don’t think you are neck turning.

[@markandsamafterwork]

We neck turn when required, neck uneven or too thick, Cheers

[@Glenfilthie1]

NEVR DULL will take it right off.

[@markandsamafterwork]

Cheers

[@Ske3849qw]

I’ve been paying attention and watching this through dozens of rifles over two decades and I can tell you he is completely spot on and correct without a doubt. Well done Mark.

[@markandsamafterwork]

Thanks Man, Cheers

[@MrNeverlost1]

I had an unusual issue with a 6.5x284. It was at the end of it's life at 1200 rounds. Cases were indicating low pressure (soot all the way to the rim) and high pressure (stiff bolt and shinny ejector swipe) at the same time. My theory is the very worn throat was not allowing pressure to build up until the bullet traveled a few inches then the bullet stopped until rapidly building pressure got it moving again. I've never seen that before or since and I've been reloading 50 years. Replaced the barrel with no further issues.

[@markandsamafterwork]

Thanks Man

[@fyisense9312]

Yes, I had a very old 30-30 passed down to me and a normal 42k psi load would blacken but a 165gr Hornady boat tail with a stiff load of 4198 would not (the same load I used in my Contender). Incredibly it was very accurate. Annealing is also imperative.

[@lz3572]

Thank you for sharing your experience. I’m sure it will help others .

[@airborne350g]

Funny you did this video just a week after I was trying to explain to a fellow shooter at my club. Will forward it to him as you explained it in greater detail. 👍👍 His issue is he might be over sizing the shoulder bump a bit too much as the carbon burn is also down the sides of the case.

[@markandsamafterwork]

Cheers Man, thanks

[@svwallen]

Thanks Mark and Sam. I’m not a shooter, never owned a gun, but I really enjoy your videos and have shared them with several mates. Big thumbs up👍👍👍👍

[@markandsamafterwork]

Cheers man, thanks

[@N0B0DY_SP3C14L]

As usual, you are a fucking legend, mate. Solid, concise, and informative.

[@markandsamafterwork]

Thanks Man, Cheers

[@pjsmfasheri]

Never knew gas got around the bullet. Thanks Brother.

[@dannypreece8932]

Just found your channel. I'm very impressed with it. I've been a reloader for years and never give any of this any thought. Thanks for making it clear.

[@markandsamafterwork]

Thanks Danny, Cheers

[@RejeanBoucher]

Thanks Mark great explanation. As this residue is more like soot than baked on carbon, what I have been utilizing is a very small amount from a product known as Ballistol oil spray on a rag/tissue and then I just rotate the neck onto the rag, usually only requires one or 2 turns of the case; no scrubbing and necks come out spotless.

[@markandsamafterwork]

Yes, for normal amounts, same here, Cheers

[@RejeanBoucher]

Auto spell check gets me every time, LoL I edited my post the product I utilize is Ballistol not Ballistic.@@markandsamafterwork

[@markandsamafterwork]

👍

[@johnbladen4931]

I agree Mark. For peoples info, I believe you need to remove this black soot (Carbon), off your cases, prior to resizing these cases. The reason I suggest this is, this Carbon (on your cases) is actually harder than your steel of your reloading die, so it can actually scratch the inside of your resizing die. So, how do I remove this carbon? I wipe it off with a clean rag, or if there is a lot of carbon, as you suggested, I also use a well used/worn 3M Scotch Brite pad, that I have on my reloading bench. Hope that helps. JB

[@markandsamafterwork]

Thanks John, Cheers

[@sick7six1]

I've found unique case lube cleans the soot rather easily.

[@WanderingBass]

Thanks for the new video brother. I've been watching for almost a decade now. I show this channel to all my shooting friends. We love your content.

[@markandsamafterwork]

Thank you, all our best man, Cheers

[@WanderingBass]

@markandsamafterwork you're welcome. You two have taught me so much throughout the years. I always show your videos to people who say certain rounds can only go so far.

[@paulsouth4794]

Thanks Mark . Working up loads with 2206H 100gr 6.5SE load, I had a lot of carbon on the mid pressure loads . Its good to know why .

[@markandsamafterwork]

Thanks Paul

[@vincentkline7656]

Wow. That was excellent. Lucid, well executed and overall great presentation. Thank you! Having been a hand loader for almost forty years I have experienced this condition in most “cases” (pun intended) you describe! Your newest subscriber, Vince

[@markandsamafterwork]

Thank you Vince, Cheers

[@giggergigger1]

I’ve noticed this with factory Sako 50 gr in 223 but not so much with Sako 55 gr

[@markandsamafterwork]

Cheers

[@giggergigger1]

Correct, the sake 50 gr is the dirtiest 223 I’ve ever put through my rifle, very accurate though ! The 50 gr varmint by Sako is not dirty at sll

[@greghunter4383]

Half way through watching and had flash backs to ''The Curiosity Show'', great explanations mate.

[@markandsamafterwork]

Lol, Cheers Greg, thanks

[@robertsansone1680]

Interesting. Thank You. I tell people to always save brass, whether they reload or not. Cases tell a story. An example would be, someone tells me they're getting misfires. I ask, " do you have a fired case"? "Noooo". You try to help.

[@markandsamafterwork]

Thanks Rob

[@robertsansone1680]

@@markandsamafterwork Very interesting information. I learned some things. Thanks again.

[@markandsamafterwork]

👍

[@CMAenergy]

I have done a bit of machining in my life time, Basically I would say your skirting the main problem If gasses are escaping back at the neck of the brass, Then I would say that the chamber of the barrel was made a little on the lose side But who am I to say, since i'm no exert gun machinist But when brass comes out clean, I would be pointing my finger at the chamber.

[@markandsamafterwork]

Nope, maybe watch the video, all explained, Cheers

[@willfriar8054]

if you're shooting once fired brass from the military every full automatic weapon has huge chamber clearance sometimes as much as 0.015 clearance. bolt action rifles have usually less than five. resizing with full-length dies after using 556 from military ranges it never gets stressed that much again.

[@CMAenergy]

@@willfriar8054 Yes I would agree, because temperatures rise radically and that changes tolerances and can tighten and loosen where it should not be And that may also be a reason why bullets get sprayed every which where when rapid firring is in place and many targets get missed except at close range,

[@Robphoto37]

You explain this very well. Excellent.

[@markandsamafterwork]

Thanks Rob

[@johnpew6846]

I like to use H4895 for reduced recoil loads in my 300 Weatherby. I can plink all day long using that power and 150-grain bullets, but if I go too low, the necks will not seal, and soot will blow back all the way to the belt. If the soot is too thick, it can be difficult, if not impossible, to remove. It seems to impregnate the brass.

[@markandsamafterwork]

Thanks John, Cheers

[@BrandonBAMF197]

I'm running at the upper limit of pressure, and I still get this black on the neck 223 rem 80gr sierra matchking with 24.5gr varget cci br4 primer lapua brass

[@markandsamafterwork]

As said, more than just a pressure issue, Cheers

[@michaelkaliski7651]

A great explanation and details. Perhaps worth mentioning that perfect seals around the bullet and cartridge are impractical otherwise it would be impossible to load and unload the gun, let alone fire a bullet along the barrel. There will always be some small gap where high pressure gas will blow by.

[@markandsamafterwork]

Thanks Man

[@lancewunsch302]

I noticed this on my new 7mm PRC with the 175 gr ELD-X. All 18 rounds so far.

[@markandsamafterwork]

Thanks Ian, Cheers

[@OldManMontgomery]

I have experienced the gas 'blow by' to discolor brass. I long ago figured out it was 'blow by' doing the effect. However, I didn't realize the lower beginning of the powder charge the effect happens. Good information and good video. Slower powders are more prone. I prefer slower powders in my rifles to accommodate heavier bullets. I can live with more careful cleaning. I do anneal rifle brass every five firings or so. Thanks for the real information.

[@markandsamafterwork]

Thanks Man, Cheers

[@JohnStyron]

Is it possible to not resize your brass and just fire form it? If you are using it in the same chamber. Would that solve seal problems without compromising accuracy without causing stuck cases? Would that also possibly reduce the need for annealing the brass since it would be worked less?

[@markandsamafterwork]

You still need to neck size, so not much in it, Cheers

[@gb123-ej8wh]

I have had low pressure cause gas to move past the bolt and spit in my face. The answers are as you mentioned increase pressure and or soften the brass by annealing it. Driving pressure up can be done by crimping, by raising the charge and by reducing case capacity via use of fillers. Fillers also keep charge pushed against the powder.

[@markandsamafterwork]

Thanks Man

[@bigtrev761]

🇦🇺😎👍

[@markandsamafterwork]

Cheers

[@TedJ71]

There’s a product called carbon killer that works well for this. Been loading since 70’s and never gave it much thought, just tumble my brass and keep chamber clean. I’ve gone on several trips shooting prairie dogs shooting 3-400 rds a day for 8-10 days and clean bore every 40-50 rds and have never had any issues.

[@markandsamafterwork]

Cheers

[@Mooseracks]

Case stretch...what are the causes

[@markandsamafterwork]

Excess stretch is caused by excess head space, lots of videos that explain this stuff on the channel, but if you have issues, maybe talk to a gunsmith, Cheers

[@racrx728]

Next Mark will give us rhe rundown on red necks😂

[@markandsamafterwork]

Lol, Cheers

[@garymcmullin2292]

I can see where the typical shooter might think he has to take this phenomenon to heart and start fretting over stopping the dirt smudges. A guy has enough to do just finding the load his rifle likes for accuracy, start worrying about stuff like this and you just unnecessarily complicate your life. The caveat of course is how bad the smudge is, which may indicate a problem needing attention. It is the nature of the beast, seldom do we get a perfect scenario because with cartridges and guns they are constantly changing in spec and character, like brass hardness, erosion of chamber surfaces and variances in shooting conditions and components.

[@markandsamafterwork]

Cheers

[@L.V-Rider]

What is your take on cleaning brass. If my brass comes out of the riffle I generally just wipe it with a dry cloth instead of all the tumbling and stuff people do. I see some guys feel proud of their brass being shinier than new out of the box brass.

[@markandsamafterwork]

Yes we do about the same, shiny does do much for me, lol, Cheers

[@DrBreezeAir]

Amazing stuff, Mark, as always. Thank you.

[@markandsamafterwork]

Cheers Man, thanks

[@luissoto2647]

I get that black ring with AAC 308 ammo

[@markandsamafterwork]

Cheers

[@TheRealTimKennedy]

I get this constantly with most factory ammo on my favorite hunting rifle , 7mm rm from weatherby . But it’s a shooter so I ain’t messing with it

[@markandsamafterwork]

Cheers

[@garygates5679]

GREAT VIDEO MARK ... !!!!!! WELL EXPLAINED ... !!!!!! DOUBLE G. !!!!

[@markandsamafterwork]

Thanks Gary

[@davegrimshaw7318]

Stop shouting Gary..😂

[@Antonio-j1g]

I reload a 6.5 Carcano and, I notice the barrel get hot after 3 rounds. Why is that? I have no problem with other carcano with same load

[@markandsamafterwork]

most barrels do, maybe thinner than others....

[@Antonio-j1g]

thank you

[@HOWLETTZER]

I figured the powder was showing me that the brass was needing annealing due to it being work hardened.

[@markandsamafterwork]

Can be, but not the most common cause, Cheers

[@JCann]

Could this also cause a greater ES/SD due to possible changes in pressure shot to shot

[@markandsamafterwork]

Not as a rule, Cheers

[@hariegodden3006]

THANX M N S

[@markandsamafterwork]

Cheers

[@MegaRiffraff]

👍🏻

[@markandsamafterwork]

👍👍

[@diggernash1]

Add a suppressor to a semi-auto, and it is all painted black. Gratuitous song reference. Another concise, well explained video. Thank you.

[@markandsamafterwork]

Thanks Digger

[@henriklopperi6686]

With piston + flow through can I get still glossy brass.

[@gunman-6646]

Nice video, thanks bro.!

[@markandsamafterwork]

Thanks Man

[@Pilottoproperties]

Video came at the perfect time. Been having this with my 7mm-08 and wondering what was going on and how much of a problem it was.

[@markandsamafterwork]

Thanks Man, Cheers

[@michaelotto8696]

I've put some of this down to powder burn speed. Slower burn, black necks. Faster burn, clean(er) necks. This also affects pressures. Thank you for this content! 👍

[@markandsamafterwork]

Cheers