By loading the 300-grain Sierra HPBT MatchKing bullet at subsonic velocities (1,040 ft/sec.) for suppressed applications, the muzzle energy measures 720 ft-lbs., surpassing both the high velocity 115-grain load for the 9mm Parabellum as well as the 240-grain. 338 Spectre will launch the 180-grain BT at 1,800 ft./sec., approaching 1,300 ft-lbs. 35 Remington or even the 180-grain load for the. Furthermore, it allows the user to employ existing suppressors for the 9mm without modification, providing enhanced tactical firepower.īallistic performance is comparable to the. 458 SOCOM, this cartridge was intended to offer. Developed by Marty Ter Weeme, founder of Teppo Jutsu L.L.C., who also developed the. 338 caliber bullets, the cartridge offers a variety in projectile choice, ranging from 160-grain Barnes X Spitzers, through 180-grain BST to 300-grain HPBT MatchKing rifle bullets. 338 Spectre.338 Spectre wildcat cartridge Richard Mann. With more than double the bullet weight of the. 300 Blackout is a clever design that fits 30 7.62mm cartridges into a standard. 338 Spectre offers great potential as a single shot, silhouette and small game cartridge. These new rounds, mainly 300 Blackout and 338 Spectre, both try to improve on the existing rounds while preserving maximum compatibility with. It shares rim size with the Remington 6.8 x 43mm SPC cartridge, allowing use of OEM bolts in this caliber. ![]() ![]() The NDZ Performance AR Magazine Catch adds a custom personalized. The cartridge is intended to fill the gap between traditional pistol caliber cartridges and existing rifle cartridges used in this weapon system. .338 Spectre is a cartridge is intended to fill the gap between traditional pistol caliber cartridges and existing rifle cartridges.338 Spectre offers. Fits Rifle Platform(s): AR-15, M4, M16 & S&W M&P 15/22. For the law enforcement professional, it offers solid terminal ballistics from one of the most-widely used weapons platforms with minor modification. 338 Spectre cartridge was developed specifically for the AR-15 family of gas-operated, detachable-box magazine-fed firearms. 338 Spectre offers a user-friendly cartridge in terms of brass forming and reloading, with light recoil and excellent performance on small to medium size game.
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