.303 rifles often have an oversized chamber...not headspace wise, but across the base of the brass.....at the widest part of the case. When a round is fired the brass expands to fill the chamber. ...
Type: Posts; User: win308; Excluded Forums: Milsurp Knowledge Libraries (READ ONLY)
.303 rifles often have an oversized chamber...not headspace wise, but across the base of the brass.....at the widest part of the case. When a round is fired the brass expands to fill the chamber. ...