Is the .338 ARC going to survive?
This video provides an in-depth accuracy test of the .338 ARC cartridge fired from a CMMG Descent SBR with a 10.5-inch barrel and 1:8 twist rate. The instructor compares the performance of Hornady's 175-grain supersonic hollow points and 307-grain subsonic sub-x ammunition. While the supersonic rounds demonstrated good accuracy, the heavier subsonic bullets showed signs of poor stabilization, leading to larger groups and elongated bullet holes.











