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338 spectre parent case12/8/2023 338 Spectre is a lower pressure cartridge than 300BLK by design, so instead of requiring a dedicated rifle sound suppressor, it can utilize much lighter and smaller 9mm pistol suppressors. That extra punch means superior penetration, a useful feature in the day of ubiquitous body armor. Having by far the greatest sectional density, it also retains velocity and energy much further downrange. 300BLK tops out at 220 grains, 9×39 at 250, while 338 Spectre launches 300 grain low-drag projectiles. Since the muzzle velocity is limited by having to stay under the speed of sound, this cartridge uses extremely heavy bullets. Slightly inferior to 300 Blackout in supersonic performance, 338 beats it and the Russian 9×39 decisively in suppressed use. In effect, it approximates both the 7.62×39 Russian and the dedicated subsonic 9×39 Russian, though with a smaller, lighter bullet.ĭesigned to fit 25 rounds to a standard 6.8SPC magazines, 338 Spectre is optimized around subsonic performance, though it also offers a number of high-velocity supersonic loads. With shorter rifles and sound suppressors becoming more popular, it promotes reliability by having the same gas port pressure in standard and subsonic loads. 223, it is notably more effective and equals the AK cartridge in effect. With more than double the bullet weight of the. The Luger cartridge won mainly on technical merits, though being the first out of the gate also helped.ģ00 Blackout is a clever design that fits 30 7.62mm cartridges into a standard. 9mm Luger, itself derived from 7.65mm Luger by necking up to increase payload, competed against 9mm Steyr, Glisenti and Mauser. Sometimes, the logic of introducing apparently competing cartridges of similar dimensions and performance isn’t very obvious. 458SOCOM provided 45-70 Government and 450 Marlin performance in a smaller package adaptable to the low-recoil AR15 platform. For example, 45 Auto Rim adapted 45ACP to revolver use without requiring moon clips. Yet another reason for new cartridges is the use in different style of firearm. 25-06 and 7-08 are such derivations from 30-06 and 308 respectively. They were brought up to approximate the performance of 45ACP and 9×19 Luger without being prohibited military ammunition.Īt other times, flatter trajectory combined with lower recoil are the goal. More often, the puzzling profusion of the new offerings has to do more with legal regulations than with performance – 45GAP and 9×21 are the prime examples of such developments. “Solutions to nonexistent problems” we say. We often scoff at the new chamberings offered by ammunition manufacturers.
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