Barrel life for a 5.56mm is typically about 9,000 rounds, whereas the 300 BLK has passed 30,000 rounds and continues to climb. On the endurance side of the equation, the mean number of rounds between stoppage was 738 rounds for the 5.56, and 640 rounds for the 300 BLK. Firing subsonic 300 BLK loads only upped the rate of fire 5 percent, from 746 RPM to 780 RPM.Īdditional testing by AAC revealed that the 300 BLK has a point-of-impact shift with and without a suppressor of 1.3 MOA at 100 meters supersonic, and 2.4 MOA subsonic. A supersonic load in the 300 BLK increases 18 percent, from 821 RPM to 970 RPM. The average rate of fire for a 5.56 increases 34 percent, from an average rate of fire of 737 rounds per minute (RPM) to 985 RPM when suppressed. When comparing a suppressed to a non-suppressed 10-inch barreled 300 BLK AR to a 10-inch 5.56mm AR, the 300 BLK is a winner. Installing a suppressor on a weapon typically increases the rate of fire. When fired from a 9-inch barrel, the 300 BLK produces more devastating terminal effect than a 5.56, and on par with the 7.62×39 or 6.8 SPC.
When fired from a 9-inch barrel, the 300 BLK produces more muzzle energy than a 5.56mm M855 round fired from a 16-inch rifle barrel. With subsonic cartridges, the 300 BLK produces a low sound signature when suppressed, and the development of 100- to 150-grain full-speed ammunition matches the ballistics of the 7.62x39mm AK. AAC officially designated it as the 300 AAC Blackout, or the 300 BLK. Remington received Sporting Arms and Ammunition Manufacturers Institute (SAAMI) acceptance of the new cartridge in June 2010. 30-caliber projectiles from the AR platform without reduction in magazine capacity, while maintaining compatibility with the AR-15’s standard bolt. (AAC) and Remington developed the 300 Blackout System to launch.
The Smith & Wesson Model M&P15 – 300 Whisper also chambers. The 300 AAC Blackout has both military and law enforcement applications and a growing legion of civilian fans to boot.
Suppressors create more back pressure and help achieve full cycling of the gas operated system.During load development, the Loki Weapons System Patrol Rifle in 300 BLK was fitted with a Leupold Mark 4 6.5-20x ER/T variable to wring out its sub-MOA capabilities. Subsonic ammunition is best used with a suppressor. Please note: The reduced pressures associated with subsonic ammunition can affect the proper cycling of gas operated firearms. Even with it’s pinpoint accuracy, we don’t recommend hunting with MatchKing bullets. This projectile is well known for it’s excellent accuracy. Component selection is only the start to our top quality ammunition, the Gorilla Ammunition manufacturing process ensures consistency by pairing high end linear loading equipment with multi stage in-process inspections by highly trained machine operators with a final inspection of each and every round by our quality inspectors to ensure only ammunition that meets our rigorous specifications makes it into the box. Sierra MatchKing bullets have set an incredible number of new national records. Gorilla Ammunition utilizes only the highest quality components to manufacture top quality match grade loads and this offering chambered in 300 AAC BlackOut with the 220gr Sierra MatchKing is no exception. Increased maximum effective range with Super Sonic ammunition and incredible sound signature reductions with SubSonic ammunition make 300 BlackOut an awesome alternative to the 223 REM cartridge. 300 AAC BlackOut is growing in popularity due to it’s increased range capabilities over 223 REM / 5.56 NATO.