Approved by SAAMI on 17 January, 2011, Supersonic 300 AAC Blackout 110-125 grain 300 Blackout ammunition was designed to produce a similar ballistic effect on target of a 7.62 x 39 mm round but out of a 9" barreled AR platform carbine. Check for gas block or carrier-key leaks. However, the .300 Blackout round has a wider range of projective choices thanks to its.30 caliber bore, which burns its full potential completely in a 9-inch barrel. You should not need a lightened carrier or any non standard parts ever with 300 AAC BLACKOUT. It is made … Hey guys, Looking to make my first 300 blackout pistol and I'm looking at complete uppers currently (I just absolutely hate building uppers). Re: AAC 300 Blackout which buffer? I decided to go with a mixed flat dark earth (FDE)and black color scheme to match the dirt here in Texas. 8 inch and 10 inch. At 300 meters, 300 Blackout has 16.7% more energy than a … .300 Blk-The .300 Blk has a wider range of projectile choices – Due to the .30 caliber bore, burns its full potential in a 9-inch barrel, and is a much better choice for hunting.-Has the ability to cycle both super and subsonic ammunition without modification. Posted: 10/27/2013 10:13:07 AM EST Lots of good info HERE I also upgraded the glass on the rifle from the Millet scope to a Leupold Mark AR Mod 1 1.5-4x. That being said, if long-range application of the weapon is to be the goal, neither of these barrels will suffice. This length, coupled with a 1:8 rifling twist, provides the best 300 Blackout barrel for supersonic loads at … Sep 01, 2016 The .300 Blackout reaches its max potential from a 9-inch barrel. VIDEO: Fog Ammunition Manufacturing .223 with Sierra Blitzking Sep 08, 2016. I also finally shot and tested out my new 300 Blackout pistol. 300 BLK vs 5.56, Combat Ready It can also function without issue with both supersonic and subsonic rounds. AAC 16 inch uppers are H or H2 buffers - either is fine. ... Quick summary of my velocity data comparing the 16-inch Ballistic Advantage barrel to the 9-inch AAC barrel My reloads: Barry 220 gr (10.1 gr IMR 4227) 1040/983.8 fps Maker 200 gr (10.2 gr A-1680) 999.6/907.8 fps The end result is that you can fire much more powerful bullets than 5.56 through a smaller, more compact rifle. What is the muzzle velocity differences between 8.5", 9.5", and 10.5" 300 BLK barrels shooting 125 gr supers? $160.00 (1) $165.00. I really like the price point of the Aero uppers, but they only come in two sizes. As soon as the paperwork cleared, I sold the 16″ rifle and bought a 9″ AAC 300 BLK upper. 8 vs 10 inch barrel for 300 BLK pistol. Bullet Tips: Understanding bullets starting from the tip. Why Subsonic 300 Blackout Needs a Pistol Length Gas System Sep 13, 2016. For example, when using supersonic ammo, a 300 Blackout bullet fired through a 10.5-inch barrel has more muzzle energy than a 5.56 fired through a 16-inch barrel. When pushing the round out to 300 yards or so a 16-inch barrel will be in order. The first is a worthy contender for best home defense .300 Blackout AR-15 uppers use, the… Bravo Company BCM 300 Blackout 9″ Barrel MCMR-8. This is why most hunters and outdoor shooters would opt for a .300 Blackout Rifle instead of a 5.56mm NATO round rifle. AAC 9 inch uppers use H2 buffers. This 9-inch barrel upper from Bravo Company comes with an 8-inch M-LOK handguard. 300 Blackout: A Brief Ancestry & Historical Timeline Sep 22, 2016. Ballistic Advantage 9.5" .300 Blackout Pistol Length Barrel: Ballistic Advantage 10" .300 Blackout Pistol Length Barrel: $190.00. 8 vs 10 inch barrel for 300 BLK pistol instead of a 5.56mm NATO round rifle '' BLK! 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