300 Blackout (7.62x35mm), 220gr SMK, America's Ammunition Company (AAC)

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300 Blackout (7.62x35mm), 220gr SMK, America's Ammunition Company (AAC)

Рет қаралды 16,573

Күн бұрын

💲Links: campsite.bio/b...
Ammo UPC: AAC300SMK2-20
Macros: flic.kr/s/aHBq...
This demonstration pertains only to the samples tested. This demonstration/review
may not be used to claim product certification, approval, or endorsement by NVLAP, NIST, or any federal government agency. Always seek official NIJ accredited labs reports for threat profiles.
* * The information presented in these videos is technical and educational in nature. All safety precautions are followed. Imitation or the use of anything demonstrated in my videos is done AT YOUR OWN RISK. This video is not an attempt to sell you a good or service. I am not a gun shop and DO NOT sell or deal in firearms. Such a practice is heavily regulated and subject to applicable laws. I DO NOT sell parts, magazines, or firearms.
**This video could contain affiliate links. If you use these links to buy something we may earn a commission. Thanks for the support! #300blackout #subsonic #aac

Пікірлер: 121

@bass779 Жыл бұрын

Bless you, again for this work. I'm really excited to support PSA's ammo efforts

@MacCready_ Жыл бұрын

Good idea doing this around lunchtime

@BuffRANGE Жыл бұрын

Indeed. Gives everyone something to watch for lunch

@loneczgunner6562 Жыл бұрын

So happy to see this test! You're doing gods work. I haven't watched video yet, I hope this ammo does great, I want AAC to succeed sooo bad. Hopefully they'll crank out 7.62x39 steel cased. Ok, so I watched your video. I know whats wrong with your group sizes. 1 in 8 twist is not enough for those 220gr bullets. You should repeat test with a 1 in 7 twist. I think that will help. Might even cut group size in half.

@777ta2 Жыл бұрын

In my experience, 1/8 twist will not yield very impressive accuracy with heavy subs. 1/7 is better but also not super impressive. 1/5 twist gets factory 220gr to about 1.5-1.75 MOA in my use case. Handloads get close to 1 MOA. I think this is due to a couple of factors, first being that the expanding gasses impinge on the rear of the projectile more severely than would be so in a supersonic application. This will induce a slight wobble to the projectile. This is also why groups generally seem to tighten when supressors are used with subs, as supressors slow the gasses down. The other thing is gyroscopic stability. The faster the projectile spins - construction and materials strength permitting - the more stable it can be. Gyroscopic stability factor for 220gr SMK @ 900fps 1/8 - 1.97 1/7 - 2.58 1/5 - 5.05 Food for thought

@BuffRANGE Жыл бұрын

Maybe we can get a faster twist 10.5" from like Faxon.

@Anon585 Жыл бұрын

Agreed! I finally converted to 1:5 and it gave me accuracy with subs.

@DZ4295DBW Жыл бұрын

@@BuffRANGEBRT has 10 inch barrels in a 1:5 twist rate.

@archipelago93 4 ай бұрын

I just put a 300 Blk build together and I’m glad I did my homework regarding the twist rate. I’ve seen multiple people online talking about how a 1:5 twist is pretty much required if you want to accurately shoot subsonics. Credit to the people at AAC (and now Q) who seemed to first discover this, hence why the Honey Badger/etc have it. Thankfully now some more 1:5 options have become available-Faxon, Black River Tactical, Tactical Kinetics (albeit not direct from their website for some reason), and Ballistic Advantage to name a few.

@mrgrump2534 4 ай бұрын

@@archipelago93this is just not true😂 only if you’re going super short, is it true… think about it if you have more rifling you’re getting more spin… what he said in the video is true…my 9inch barrel gets 1.5 moa easy with these rounds with a 1/7

@MannElite 3 ай бұрын

Yeah I couldn't get good accuracy out of them either. My sabre 110gr black tips were insanely accurate suppressed though.

@1timmeh 7 ай бұрын

I’m not a ballistics expert by any means but it looked like your velocities were all over the place one was in the mid 800s and the other high 900s all for the same barrel length conversely your group spread seemed to be wide up and down which to me denotes and backs up the point that the inconsistent velocities may be the reason the groups were so bad. I looked back at the groups and left and right they were basically in the same area minus maybe a bit of user error.

@PubliusRutiliusLupus 20 күн бұрын

Would love to see the new subsonic Sabre black tip 220 grain tested.

@tangomantactical Жыл бұрын

I have a 7.5" 300bo SBR. I run 147gr for plinking and 220gr Hush ammo for low db levels and HD. I don't know if its your mic or the ammo,but my rig with 220gr Hush ammo is definitely more quiet ,just comparing videos.

@ShirudoSystems Жыл бұрын

I run the 220gr Hush too and like it. Very quiet, but cycles my 10.5" with or without a suppressor. It's very smokey, but i like the quietness and reliability.

@Gunner-ll1zd Жыл бұрын

What buffer weight and spring?

@The_combat-nurse 10 ай бұрын

Some of the quietest ammo ive run out of my honey badger clone.

@TheLoneRanger745 5 ай бұрын

These bullets are supposed to work at low velocity, most Guy's are having the same results, over penetration flying out of the block sideways. Nice work Buddy ❤

@BuffRANGE 5 ай бұрын

I've never seen SMK's at low velocity have any terminal affect.

@scott2228 Жыл бұрын

Ammo Inc 220gr StelTH ammo shoots extremely well out of my 1:7 twist 300BLK. PSA sells it as well as other places. Currently on sale for $0.85/round. StelTH 147gr 9mm is nice also.

@stalo8 Жыл бұрын

Been curious about these! Thaanks for doing a gel test!

@BuffRANGE Жыл бұрын

My pleasure!

@Subtlenimbus 18 күн бұрын

With velocity spreads like those, I wouldn’t expect them to group at all. The people who made this ammo didn’t even try.

@DZ4295DBW Жыл бұрын

Twist rate matters, especially for Subs. You need a 1:5 twist rate for subs, granted very few manufacturers do that twist rate... however, Black River Tactical does.

@mrgrump2534 4 ай бұрын

Not true my 1/7 8.5 inch runs these 1moa at 100 yards… this guy either doesn’t know how to shoot or it’s his upper because no way it’s that round I’ve shot that load many times and it’s very accurate. SMK is a proven load there’s nothing to debate in here. And you only need a 1/5 twist if you’re going super short like under 8.5 or 7.5

@Subtlenimbus 18 күн бұрын

@@mrgrump2534exactly. At distances under 300 yards, twist rates between 5 - 8 aren’t usually even noticeable unless the velocity is really low due to a short barrel.

@dancingdragon273 7 ай бұрын

Try some flat bottom rounds ,they're more accurate than boat tales for 300blk

@dandetande288 Жыл бұрын

Nice to see the speeds on big screen

@TylerJames-gf8ms Жыл бұрын

Thanks for the info

@BuffRANGE Жыл бұрын

You are most welcome!

@ja0298 Жыл бұрын

I really hope AAC, hell any company, comes out with a projectile in the 190-220 grain weight that’s not match grade for bulk 300blk. I get it that it’s another sku and all that’s associated with it, but there isn’t a need a match grade projectile for range ammo when most of us are just blasting it for fun.

@BuffRANGE Жыл бұрын

Isn't that what the 220gr TMJ is for?

@ja0298 Жыл бұрын

@@BuffRANGE you are right it is. I just wish it was a factory loaded option from big companies like Fiocci or AAC.

@scott2228 Жыл бұрын

Remington used to. I would get it back in the day from Walmart for $15/box. We are talking 8 years ago. Good old days!!!!

@eloiseharbeson2483 Жыл бұрын

Just got the AAC 5.7x28 40gr BT. Nice price!

@AlphaRomeoOneFive Жыл бұрын

Thanks for the video as always Matt! I'll probably end up picking some of this up for plinking. Plinking with 300blk subs is just fun

@BuffRANGE Жыл бұрын

It is indeed fun!

@MegaAndy93 Жыл бұрын

Subs do better in 1-5 twist rate if I remember correctly.

@Username4453 Жыл бұрын

Can you test the Hornady 7.62x39 255 grain subsonics next? Thanks

@BuffRANGE Жыл бұрын

It’s in the works. Thank SG Ammo!

@lowtdave Жыл бұрын

Ohhh, hadn't heard of this. I'm curious.

@doejohn8674 Жыл бұрын

Which bullets would you recommend for self defense for reloading a 300blk subsonic? Or would you rather take a supersonic one?

@BuffRANGE Жыл бұрын

For 300 BLK, me personally I’d shoot the 110gr copper TSX like bullet. If subsonic is your route there’s a couple expanding copper subs that I believe still penetrate 12”+

@coreyp9211 Жыл бұрын

If you want a dedicated suppressed, subsonic carbine for defense you would be better off going with a 9mm or .45acp. For example 147gr 9mm Federal HST has better terminal performance than just about any subsonic .300blk.

@whiplash636 Жыл бұрын

Well, think about this... for close quarters, you can achieve 150ft/lbs more muzzle energy with a 10.5" 300blk and a 110gr V-Max (or 110gr Barnes TAC) than you can with a 20" 5.56 shooting M193. For home defense, nuff said? Lol

@coreyp9211 Жыл бұрын

@@whiplash636 Right but that’s a supersonic load. I’m talking about strictly subs.

@whiplash636 Жыл бұрын

@Corey P No, I gotcha! I meant to direct that toward Doe John. What you said about 9 and 45 is absolutely perfect and I agree.

@trentvlak Жыл бұрын

I shoot other loads with this same bullet. I've never had a round ricochet as easily as this. It will bounce off of plain dirt and go flying for a mile.

@troyelder56 Жыл бұрын

Why does the long barrel average say 1103 fps when your shots didn't go over 1100?

@BuffRANGE Жыл бұрын

Typo! Thanks for catching that..

@nickadkins7765 11 ай бұрын

What do you think about the sig 220gr OTM?

@BuffRANGE 11 ай бұрын

Sig makes nice Ammo. I’ve never touched it though.

@WhiskeyTango89 4 ай бұрын

Need to try w/ 1:5 twist

@jonn8163 Жыл бұрын

I was getting anywhere from 3-6 moa from the same load out of a BCM 9” 1/7 twist

@coreyp9211 Жыл бұрын

That accuracy and gel performance is a perfect example of how subsonic .300 blk should be considered more of a pistol round. Some subsonic hollow point pistol rounds actually have better terminal performance.

@Baqization Жыл бұрын

glorified .45acp.

@coreyp9211 Жыл бұрын

@@Baqization 230gr .45acp Federal HST or Gold Dots actually perform better.

@AndrewW. Жыл бұрын

@Baqization 300blk subs have a much better BC, but more importantly simple subsonic 300blk fmj goes through level 2 armor, unlike 45acp.

@DZ4295DBW Жыл бұрын

Barnes 300BO is the goat.

@Ben-lo7cy Жыл бұрын

I bought a bunch of these AAC 220grn from psa and every single one gets jammed in the chamber in both 300 blackouts I have. I’ve had the gun checked and every other brand 220 grn works flawlessly. The casings have excessive wear from being chambered once then I have to mortar the charging handle to get them out. Not sure if it’s a bad batch or what but both firearms have higher end barrels so I’m at a loss and have a bunch of money worth of ammo I can’t shoot or return

@BuffRANGE Жыл бұрын

The won’t return ?

@Ben-lo7cy Жыл бұрын

@@BuffRANGEI could be wrong but I thought psa had a thing saying no returns on ammo but I emailed them anyway to try to start the return process so we’ll see.

@glennsosinske3260 11 ай бұрын

That is crazy that all the gas escapes from the locking lugs when a suppressor is installed. It must be a bitch to clean afterwards. Awesome video btw. You answered a lot of questions without me asking.

@JohnZ556 10 ай бұрын

Yes they are, even the lower, the mags and magwell. The only brand doesn't have that problem at all is Huxwrx, which is even better on a tuned piston gun.

@mrgrump2534 4 ай бұрын

@@JohnZ556 no that really doesn’t matter you’re gonna get port pop and gas coming out the ejection port regardless…the only difference with piston guns is you don’t get it coming out the charging handle… back pressure is back pressure like you said unless you get a hux flow through

@JohnZ556 4 ай бұрын

@@mrgrump2534 It does matter, when the bolt is unlocking, a 'DI' gun has way more gas from the gas tube, gas key, bolt tail, and carrier gas ports. A piston gun has none of that, only back pressure from the bore. Did you ever see a DI AR blow through a thick wall of mud cake on the port when unlocking? A short-stroke piston gun like HK416 doesn't do it; a long-stroke AK doesn't do it either.

@Subtlenimbus 18 күн бұрын

@@mrgrump2534I agree. Most of the gas blowback from a suppressor comes from the barrel when the bolt opens. It can be even worse in a piston gun because less gas is allowed to leave the barrel into the piston. The gas from the gas tube into the bolt carrier is vented out the side of a non-piston AR, and then closed off when the bolt closes.

@PracticalTacticalSheepDog Жыл бұрын

1:8 twist isn't enough for heavy pills. I'll be swapping out my 7.5inch 1:8 PSA barrel with a Faxon 6.5 1:5 twist shortly. I can't get any subsonic ammo to group better than 3 in at 50 yards.

@BuffRANGE Жыл бұрын

So I should use the 1:7?

@MegaAndy93 Жыл бұрын

@@BuffRANGE I would just to see if the groups improve.

@PracticalTacticalSheepDog Жыл бұрын

@@BuffRANGE faster twist should better stabilize heavier bullets. So in theory a 1:7 should be slightly better than 1:8 and noticably better than 1:9. The 1:5 is purpose designed for 175gr+ bullets.

@BuffRANGE Жыл бұрын

@@PracticalTacticalSheepDog Might have to get a faster barrel eventually. I've stabilized 200-220gr with a 1:10, but that gun did have a 16" barrel.

@loneczgunner6562 Жыл бұрын

@@BuffRANGE You most definitely should use at least 1 in 7 twist rate. ^^ I had remington 220s leaving ovalish holes at 100 yards with a 10 inch barrel. Swapped that barrel with a 16 in 1 in 7 and they are now perfectly round holes at 100yrds. No more worrying about baffle strikes. I think you have been very lucky so far.

@bobborlog1677 Жыл бұрын

Does aac have any plans to make 9x39

@BuffRANGE Жыл бұрын

I would think 7.62x39 and 5.45 would be their top priority. 9x39 has very few users in US, but anything is possible

@bobborlog1677 Жыл бұрын

@@BuffRANGE yeah I figured those two cartridges would be first but hey me and you love 9 by 39 come on you got their ear tell them we need it

@chrisfly777300ER Жыл бұрын

I'd like to see what the 125s do in gel. I have a feeling that long ogive will lead to fast yaw

@BuffRANGE Жыл бұрын

IMO that’s SBR 7.62x39mm ballistics territory and a 110gr TSX style is better served in the velocity realm 300 BLK plays in

@chrisfly777300ER Жыл бұрын

@Buffman - R.A.N.G.E. I was talking about the PSA 125gr FMJ in particular. Since it has the long ogive.

@BuffRANGE Жыл бұрын

@@chrisfly777300ER Indeed I know that's what you meant. Even so that tumbling needs to happen very very soon, like 1-2" in, and I don't personally see that happening. But at some point if I get more of their 125gr we can try to test it

@eatingelizabethsfrizbee Жыл бұрын

I wish 1x5 twist barrels were more readily available.

@Unsername6785 Жыл бұрын

Whats the best non ap caliber against level 4? (Other than 50bmg)

@BuffRANGE Жыл бұрын

AP by whos terms ? Military or in general anything with a core or penetrator designed for armor work? Defeating level IV first strike without a purpose built projectile is not easily. A heavy magnum rifle round like 338 Lapua or 300 Win Mag would impart a LOT of energy on a plate that’s hard to handle but may not break through the plate on the first shot.

@Unsername6785 Жыл бұрын

@@BuffRANGE in terms as in a civilian purchase i know i can get ss190 that can punch through cheap level 4 but its hard to get without an ffl or being police (thank you for commenting back you make great videos)

@BuffRANGE Жыл бұрын

@@Unsername6785 ss190 is 5.7 and it’s ability is limited to level IIIa pistol armor :) commercially your best ammo choice to defeat armor is to keep shooting the same area :)

@cartersm2425 15 күн бұрын

Think... Its the barrels. They suck.

@BuffRANGE 3 сағат бұрын

You have any suggestion for a better barrel manufacturer that doesn't fit into the "custom" price range?

@jeffhuntley2921 11 ай бұрын

Hope they make 7.62x39 soon

@Gunner-ll1zd Жыл бұрын

What buffer weight and spring?

@BuffRANGE Жыл бұрын

7.5” has H2 and normal carbine spring.

@Gunner-ll1zd Жыл бұрын

Thank you

@Swampytheroot Жыл бұрын

Why stay so slow? 1100fps is dramatically stronger, just as quiet😊

@BuffRANGE Жыл бұрын

A balance. If you ride the threshold altitude and temp variations could put you over.

@Subtlenimbus 18 күн бұрын

Factory subs are usually made to be subsonic out of 16” barrels, but it does look like these are slower than they could be. But, they also had crazy velocity variation, and at least one was almost super.

@nunzionapoli6325 11 ай бұрын

PSA ammo is not a very reliable option. Overpriced range ammo.

@RedEarthRider Жыл бұрын

1/8 twist is no good for 300 blackout subsonic loads. I would look for a 1/5 twist barrel.

@BuffRANGE Жыл бұрын

Maybe with a sub 6” barrel. But a 1/8 should be more than adequate for a non expanding bullet.

@mrgrump2534 4 ай бұрын

Yes 1/7 for anything 7.5 -10.5 anything under 7.5 needs a 1/5 twist

@benvigil Жыл бұрын

Military Arm Channel has a pretty good demonstration showing the difference in terminal performance of a 5.5" 1:5T vs more traditional BCM 9" barrel. With subsonic loads, the 5.5" barrel performed MUCH better, likely due to the rotational energy of the tighter twist rate leading to greater hydrostatic shock. A number of other videos have shown the same thing. kzfaq.info/get/bejne/qLqom7B31uDVhmQ.html

@BuffRANGE Жыл бұрын

At subsonic velocities that "rotational energy" transfer stuff is very minimalistic compared to the same subsonic at slower twist rates. Someone on the 8.6 BLK forum calculated it out and the "energy" per say was not leaps and bounds.

@chuckfinley3152 Жыл бұрын

Mac shills whatever leviathan pays him to shill

@Subtlenimbus 18 күн бұрын

@@BuffRANGEyeah, it’s like a handful of foot pounds, and in non-expanding bullets it has no way to add to wounding.

@Subtlenimbus 18 күн бұрын

That was probably just a roll of the dice: one bullet happened to yaw in the watermelon, and the other didn’t. It could just as well be the reverse in a second test. Realistically, it should be expected that a bullet with a slower twist would yaw sooner than an over-stabilized bullet from a tighter twist.