Though overshadowed by the .223 Rem., the .222 Rem. is a real performer that many shooters know little about—yet, for four decades, it held the record for the smallest five-shot group fired at a 100-yard registered benchrest match.
The .300 Win. Mag. cartridge was a veritable game-changer in the military sniping community—especially in its latest incarnation, the Mk 248 MOD 1. Here’s how it was developed, and what handloaders can learn from it.