300 Blackout ??

vipermd said:

What Smitty357 said: accurate, quiet, cycles perfectly with 16" with a CAN. It would not cycle with 220 rem's, and eject only a few hornady 208 A-max. Only out to 100 yds today, BUT , quieter than a 22 lr, my wife had a sub MOA 3 shot group, I tried to stop her right at the trigger break and opened it to almost .5 for 4 shots, then the lightning started, did I mention it was pouring!! I had wanted it to work with out the can subsonic, BUT, I have no problem keeping the can on. Supersonic functions well with or with out. Be Safe,

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Glad to see u got it figured out. You will soon find urself forgetting all about the .223, lol. I've shot mine side by side with my .223 and its quieter than the .223. Throw the CAN on it, and you're right the .22LR is louder. Heck even the 9mm suppressed is louder. It's amazing what the .300 AAC is capable of doing the way it was designed. It has always been my opinion that the .300 AAC is exactly what the .223 should have been from the beginning.

Quiet hog killer is what i use mine for. And yes they will go night night in a hurry with a 220GR, lol.

No recoil, No Noise, 220 gr bullet in a AR size and weight rifle!!!! I will not give up the 308 or 223 YET!, But this is a fun caliber. Be Safe,

Can?

Smitty357 said:

Glad to see u got it figured out. You will soon find urself forgetting all about the .223, lol. I've shot mine side by side with my .223 and its quieter than the .223. Throw the CAN on it, and you're right the .22LR is louder. Heck even the 9mm suppressed is louder. It's amazing what the .300 AAC is capable of doing the way it was designed. It has always been my opinion that the .300 AAC is exactly what the .223 should have been from the beginning.

Quiet hog killer is what i use mine for. And yes they will go night night in a hurry with a 220GR, lol.

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Just getting into M&P AR's and have a 15 TS on order. What is this "Can" you mention for the 300 Blackout?

So if I choose to replace my upper later on my TS I should go 300 SBR for better cycling? Does a 16" not cycle properly with most ammo or should I just stick to certain ammo?

Thanks!

The M&P Whisper/BO is on my list for 'next gun'. . It appears (to me) to be the "best" overall caliber for the AR platform. JMO ~~~~

cheers to all
JohnG

RC1 said:

Just getting into M&P AR's and have a 15 TS on order. What is this "Can" you mention for the 300 Blackout?

So if I choose to replace my upper later on my TS I should go 300 SBR for better cycling? Does a 16" not cycle properly with most ammo or should I just stick to certain ammo?

Thanks!

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A standard 16" will cycle supersonic just fine. The problem lies with the subsonic rounds in a 16" barrel. Some are picky (depending on the GR) as another user has already stated. The .300 AAC was designed to be ran as a suppressed SBR. This is where the .300 AAC performs at its best.

I've taken hogs and y0tes with both my 5.56 and .300 ACC. I'll admit the 5.56 stands no chance when it comes to PUNCH. The 5.56 may carry a little more speed, but the impact isnt the same.

The 5.56 is like getting ran over by someone on a bicycle. The .300 AAC is like getting ran over my a semi-truck.

CAN = Suppressor. U will need a tax stamp to possess this and u will need to fill out paper work and pay fees to the ATF. This also will be registered with the ATF to YOU. So the question is, do u want them knowing what u have. =-)

For most people, just replacing the upper with a standard 16" .300 AAC upper is fine. Most people just want a bigger round for their AR15. In this case, it works fine for the job.

If u ever wanted to see what the .300 AAC at it up most potential. THEN, i would recommend going to the suppressed SBR route. The SBR is more pricey as there is paper work as well as fees that need to paid in order to register the SBR. YES, an SBR must be registered with the ATF. So as long as u dont mind the ATF knowing what u have, then u should be fine. Just remember this is the more expensive route, but IMO its also the more fun route.

PS: I still have the above complete upper for sale if anyone is interested. I havent been pushing to sell it much at all though. Originally bought to get my ole lady into .300 AAC. But now she's convinced SBR is the direction she wants to go.

Smitty357 said:

CAN = Suppressor. U will need a tax stamp to possess this and u will need to fill out paper work and pay fees to the ATF. This also will be registered with the ATF to YOU. So the question is, do u want them knowing what u have. =-)

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Technically, if you go the NFA trust route (what I'm going to do) the can is registered to the trust, not you.

LbulletM said:

Technically, if you go the NFA trust route (what I'm going to do) the can is registered to the trust, not you.

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Correct there are a few ways u can do it. But the destination always ends with you. There is no hiding from them no matter which way u go.

The good thing about the Trust is you shouldnt need ur local Sheriff to sign the paper work. Some people have problems with the Sheriff allowing them to possess such item within his/her county. There are a few more perks about the Trust. But nothing that keeps u hidden 100%

Smitty357 said:

There is no hiding from them no matter which way u go.

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One hundred percent agree with you, that's why I used italics on technically. I feel like any degree of separation is good at that point though.

Yep, it allows u to stay a few steps ahead. Better to be ahead than behind, lol

A trust will still have a trustee and all the names on the trust are still sent to the ATF. Yes a trust lets you forgo the local law enforcement sign off and no fingerprints or recent photo is required.

Here in MA a can is out of the question. Still, I liked the idea of being able to get mid range 30 cal performance (similar to the AK/762x39 round ) out of a Ar 15. The 300 AAC won out over the 6.5 cals mainly because the simplicity of the change. No mags to buy, no mods to make, no brass to buy. It won out over an AR 10 because I really don't need to power, punishment and expense of the 308 round.
I went with a quality but no name full upper and a set of dies and am good to go. I never need worry about the cal becoming obsolete because I have everything I need to keep it running and fed forever. I like that allot. FWIW, mine will put 3 shots of PNW147gr into a 1.25' circle with boring regularity at 100 yds. At 415/20 rounds, I don't even find the commercial ammo cost all that nuts should I get lazy in making my own.

Wee Hooker said:

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Dave,

What kind of scope is in the photo and how do you like it at higher powers/longer range.

nitewatchman

Harrison: 100 rds through it SW 15 300 whisper, it is cycling the 208 hornadys with out the can, rem 220's still will not cycle without a can. VERY QUIET Be Safe,

My M&P is .300...never fired a 5.56 round out of it...if your knocking the Black out you havent shot it...I make my own brass from 5.56 ..sweet and fun and if you load you can shoot pretty cheap..not like the old days but not bad...Love it

Smitty357 said:

Lets just say it'll make you forget about shooting your 5.56 anymore. My 5.56 hasnt been touched since i started shooting .300 AAC. And im honestly thinking about selling the 5.56 just because of the lack of interest.

Downside to .300 AAC. Ammo is fairly expensive and hard to come by. So when u find it for a good price, u better buy it in bulk if possible. If you reload you can cut down your 5.56 cases and use them to save on brass.

In a nut shell, the .300 AAC is exactly what the 5.56 should have been from the start.

Good: .300 AAC uses everything from the 5.56 (except the barrel). So you dont need to buy any special mags or anything for it.

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The 300AAC is ballisticly the equivilant to a 300 Savage or 30/30 Winchester. It is not a magic ballistic package, anymore that the 6.8spcRem is.

Nice cartridge, optimized for suppressed work and ok for deer sized targets out to 200+/- yards depending on the bullet/velocity you choose.

Yes, I have one coming...in a bolt gun so I don't confuse the ammo/magazines under stress. If you like it, get one, shoot it and hav fun, it is a great deer dropper and pig smacker.

One heck of a suppressed hog killer i tell ya.

By far the best round for taking down those piggies in the quiet of the night.

I actually no longer shoot my 5.56 anymore. unless of course i happen to need new brass for my .300. Once u get use to the .300 and learn how to judge bullet weight for distance. It becomes one nasty little round.

300 Blackout

I sure concur with most of what I have read here.
I don't shoot my 223 AR's much after buying a Blackout.
It stands to reason though as I also shoot a single shot 30/30 with gas checked lead a lot.
Anyway, I saw that "AIM" has the Mossberg made barrels for $159.00
if I am remembering right.
Makes for a very low cost build, I have a AR Stoner barrel my self , but I noticed the Mossberg barrels are Melonite coated and that should be a nice touch.

I couldn't afford to make it my primary shooter, but I have been considering a 300 blackout upper for white tail use. If it gives 30-30 performance it should be good enough for hunting here in WV. I currently use a marlin 336 and have never had issues taking deer.

Could or can the Blackout shoot a cast Gas Check Bullet or could this lead to potential gas system problems?

Aside from being dirty this could really offset ammo costs for casual shooting.

nitewatchman

Ok..I have had enough time with my "blackout" and she is a shooter, there is a lot of discrepancies in the reloading data and improvements happen all the time. I myself am testing some hotter supersonics today, rounds that I want to use for hunting When I say hotter I am talking 2400fps MV. LOL I still prefer to shoot my Sport....I think I always will but I love being able to shoot the wings off of the housefly down there on the gate post...

Here is my 300blk as she runs, she is a great offhand hunting rifle. She really shines in just shooting. All the different 308 caliber bullets to choose from plus mine runs Commercial Whisper loads just fine (they are the same reloading dies). Mine also runs the commercial subsonic ammo and cycles them also but because I have no desire to shoot subsonic ammo I do not think much about it.
I keep her on a diet, that is an old Westernfield 4x33 scope and it works like a guide scope which is what the first guide scope actually were. The UTG Pro handguard is light, customizable, I love the fit and the fact that it covers part of the upper receiver to make it more seamless. That is the ATI pistol grip which is a copy of the G27 by first Samco which I have put on 4 different MSR's and am glad to find someone else making that style. I have a pretty complete set up of extra's that I can put on or take off quickly if the situation would require. It also is my deer rifle this year. But at 8.2lbs(with 8rounds/pmag) is actually heavier than I thought but is a great little rifle. I am glad I built it, but out here on the prairie my next project will be a 24" varmint barreled MSR.