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The .300 AAC Blackout is a SAAMI-standardized .300-221. Hornady states that any rifle chambered for the 300 AAC Blackout can shoot their .300 Whisper ammunition, which is made within .300 AAC Blackout specs. The reloading dies for these two cartridges are often the same. [7]
The Whisper family was developed as a line of accurate, multi-purpose cartridges using relatively heavy rifle bullets for a given caliber in subsonic loads. [1] [2] [3] The intention was to create an extremely accurate cartridge family for military, police, competition and specialized hunting markets that could also be easily sound suppressed.
The .300 Whisper (7.82×34mm) is a CIP standard [1] cartridge in the Whisper family, a group of cartridges developed in the early 1990s by J.D. Jones of SSK Industries.It was developed as a multi-purpose cartridge, capable of utilizing relatively lightweight bullets at supersonic velocities as well as heavier bullets (200–250 grains) at subsonic velocities.
Subsonic ammunition is ammunition designed to operate at velocities below the speed of sound (Mach 1), which at standard conditions is 340.29 m/s (1,116.4 ft/s). This avoids the supersonic shockwave or "crack" of a supersonic bullet, which, particularly for suppressed firearms, influences the loudness of the shot.
Common rifle cartridges, from the largest .50 BMG to the smallest .22 Long Rifle with a $1 United States dollar bill in the background as a reference point.. This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name.
.35 Winchester Self-Loading.350 Legend.350 Remington Magnum.350 Rigby.351 Winchester Self-Loading.356 Winchester.357 Magnum.358 Norma Magnum.358 Winchester.360 Buckhammer.360 No 2 Nitro Express.360 No 5 Rook.369 Nitro Express.375 CheyTac.375 Dakota.375 Flanged Nitro Express.375 H&H Magnum.375 Remington Ultra Magnum.375 Ruger.375 SOCOM.375 SWISS P
When comparing the .277 Wolverine to the 300 BLK, the 300 BLK has more options for the heavier sub-sonic bullets (168-220 gr), but when shooting the lighter super-sonic bullets (90-130 gr), the .277 Wolverine has a greater variety of better options, with each having an excellent ballistic coefficient (for hand-loading, .277 bullets are ...
The MCX is designed to deliver optimal performance with .300 AAC Blackout and an optional suppressor. [11] The barrel's profile is tapered at the crown to enable the installation of muzzle devices and direct-thread sound suppressors without the use of washers that degrade performance and enables the devices to self-center on installation.