In their booth at the recent AUSA show in Washington, DC, SIG Ammunition teased additional caliber options for their composite case ammunition technology recently selected by the US Army as the Common Case Architecture for the Next Generation Squad Weapon program.
Initially developed in 6.8x51mm for NGSW, the cartridge features a two-piece case which combines a steel head for strength with a more brass case. The same technology is used in the commercial round named .277 SIG FURY which received SAAMI approval two years ago.
According to Jason Imhoff, Chief Technology Officer and Vice President of SIG Ammunition, they’ve concentrated on expanding the capability quite a bit with 6.5 Creedmoor and 7.62 NATO, but other calibers are also in the works. So far, they are seeing 300-500 fps increase in velocity over standard case designs.
Seen here are 5.56mm, 6.5 CM, 6.8 CCA, 7.62mm and .338 Norma Mag which are military calibers currently in use. Others, including SIG FURY versions of popular hunting and sporting cartridges will be pursued as well.