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Compared to the 6.8×43 mm Special Purpose Cartridge, another round made to have increased stopping power over the 5.56 NATO, the 300 Blackout has different capabilities. The 300 BLK was designed with a specific shorter-range focus to have equal or more energy than the 7.62 Soviet and work reliably with suppressors.
.300 AAC Blackout: 2011 US 2 [7] [13] R [13] 7.62×35mm 2388 [10] 1487 [13] 2.05 20.0 [10] 0.308 [10] 35mm Developed for suppressed CQB as a sub sonic round. Supersonic is also available. .300 H&H Magnum: 1925 [3] UK [8] 2 [4] [7] R [10] 7.82×72.39mm [8] 3394 [10] 3485 [8] 2.054 81.0 [10] 0.308 [10] 0.730 [11] 72.39mm Belted. a.k.a. 300 H&H ...
8.6mm Blackout (8.6×43 mm), sometimes referred to as 8.6 BLK, [1] is a centerfire rifle cartridge developed by the firearms manufacturer Q, LLC. [6] It utilizes a shortened case from the 6.5mm Creedmoor necked up to an 8.6 mm caliber (8.585 mm or 0.338 in diameter) projectile. 8.6 Blackout is designed for use in bolt-action rifles or as a caliber conversion for AR-10 style rifles.
The subsonic round is originally designed to have an optimistic effective lethal range of 400 to 530 meters and a maximum penetration of up to 10 mm of steel. Like the 5.45×39mm cartridge, the 9×39mm SP-5 features an air pocket in the tip, which increases its tendency to yaw or "keyhole" upon impact, thus increasing soft tissue damage in ...
Some alternative cartridges like the 300 AAC Blackout (7.62×35mm) focus on penetration and stopping power at short ranges by sacrificing long-distance performance. These calibers are designed to be interoperable with the 5.56 by maintaining similar dimensions, which allows them to be used in a 5.56-chambered rifle with a simple barrel change.
The .458 SOCOM (11.63×40mmRB) is a moderately large round designed to work in an AR-15 platform.This is achieved by installing a 458 bolt and barrel. The 300-grain (19 g) round offers a supersonic muzzle velocity of 1,900 ft/s (580 m/s) and 2,405 ft⋅lbf (3,261 J), [1] similar to a light .45-70 but with a much smaller case.
The 6.5mm Creedmoor designated as 6.5 Creedmoor by SAAMI, and as 6,5 Creedmoor by the C.I.P. [4] is a centerfire rifle cartridge introduced by Hornady in 2007. [6]It was developed by Hornady senior ballistics scientist Dave Emary in partnership with Dennis DeMille, the vice-president of product development at Creedmoor Sports, hence the name.