Read Next: Ultra-short .300 Blackout barrels round-up Part 2 Both uppers were used on the same SBR lower, with Geiselle Single Stage Precision (SSP) … It measures 16 inches with a 1:7-inch twist and features BCM's enhanced barrel profile. I’m not sure if 18 or 20 or 24″ would give the absolute greatest velocity, as I haven’t seen the specs on 300 BLK velocity in a 24 inch barrel. Click to enlarge. Identical loading dies are used for both. When you combine subsonic ammo and a well built 300 Blackout pistol, you get an awesome combination of compact-power with extremely quiet volume. Ballistic Advantage 9" .300 Blackout Pistol Length Barrel: $115.00. From a 9 inch barrel (2049 fps): 100 inches drop at 410 meters 41 inches drift at 470 meters 291 ft/lbs of energy at 625 meters. 300 Blackout is also a round commonly used for hunting as well. The 5.56 reaches its max potential from a 20-inch barrel. It’s essentially the same as the original .300 Whisper, but the Blackout includes a .015-inch longer throat. I will be comparing it against the 5.56 NATO and 7.62×39 Soviet when relevant, as the 300 Blackout is meant to replace one and match or surpass the other. Due to NFA laws in my home state, two different guns were used for this test. The primary weapon system will be an M4/AR-15 platform with an AAC upper using a 9-inch barrel and pistol length gas system. 440 meters for a 9 inch. Also, the 300 BLK shoots faster from a 16″ barrel than a 9″ barrel, particularly with supersonic loads. $160.00. Why 300 Blackout? $155.00. Using M4 military hit-probability standards, the max effective range of 300 AAC Blackout from a 16 inch barrel is 460 meters. Hornady 300 Blackout 110 gn GMX left, 6.5 Grendel 123 SST on righ t We chronographed several of the 6.5 Grendel loads from my 18″ barrel and the … This round was designed to fill in for the shortfalls of the AR-15–namely, short barrel performance, as well as suppressed performance. The 300 Blackout also has a short 16.5 inch barrel and it’s rifling has been changed to the M24 5R type. Stats 700 Police AAC: 16.5 inch 1 in 7 twist barrel 5R rifling First, supersonic ammunition was tested unsuppressed through a custom AR-15 pistol with a Brownells 10.5-inch .300 Blackout barrel with a 1-in-8-inch twist rate. These are from 24″ barrels and I do not think I have ever seen a 300 Blackout with a 24″ barrel. Meanwhile, the barrel of the Recce 16 is made from independently certified Mil-Spec 11595-E steel. Comparison of the .300 Blackout ammo used in this test. The round uses the same magazines, uppers, lowers, BCGs, and more. All the .300 Blackout needs a new barrel and gas system. $160.00 (1) $165.00. Ballistic Advantage 9" .300 Blackout Barrel - Performance Series: Ballistic Advantage 9.5" .300 Blackout Pistol Length Barrel: Ballistic Advantage 10" .300 Blackout Pistol Length Barrel: $190.00. The .300 AAC Blackout, while occasionally seen in bolt rifles like Ruger’s American Rifle, is most commonly seen in AR-15 platforms. Once considered an exotic round, 300 Blackout has become a household caliber.One of the best ways to shoot 300 Blackout is suppressed.

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