Remington’s 300 AAC Blackout

Wouldn’t you really like to have a Buick…

Just exactly what is a 300 AAC Blackout?

Just exactly what is a 300 AAC Blackout? It’s a caliber that had its beginnings as the 300-221, a wildcat cartridge popularized by J.D. Jones of SSK Industries as the 300 Whisper®. 

The cartridge is built on a 5.56×45 case shortened and necked to accept a 30-caliber bullet. When loaded with a 200 to 250-grain bullet the Whisper is subsonic; producing muzzle velocities of 960 feet per second from a 9” barrel to 1030 feet per second from a 16” barrel. There’s also a version loaded with a 125 grain projectile that achieves supersonic muzzle velocities of over 2200 feet per second in a 16 inch barrel.

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3 Responses to Remington’s 300 AAC Blackout

  1. Pingback: Did Someone Say 300 Blackout? | FOG HORN

  2. jo co says:

    weak link. niche cartridge for anything but suppressed subsonic – it’s intended design

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    • Your absolutely correct on the niche concept. However, the full power load has similar external ballistics as the 7.62 x 39. Some shooters like that because within the effective range of the 5.56 x 45 the terminal ballistics appears to be better. That may no longer be true since the introduction of the Enhanced 5.56 x 45. Great comment, thanks for posting.

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