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.277 SIG Fury Cartridge: Everything You Need to Know SAAMI approved a maximum chamber pressure of 80,000psi for the new .277 SIG Fury. First unveiled in late 2019, the cartridge is the result of SIG Sauer's participation in the Next Generation Squad Weapons (NGSW) military procurement solicitations. https://www.gunsandammo.com/editorial/277-sig-fury-cartridge/457153 |