Ok, so I got a rifle chambered in 338-378 wby, and apparantly, it was just a touch short in the lenght. Some brass would chamber ok, but roughly half were really hard to close on. Verified my thoughts by filing the top of the belt on a couple that were real hard to close on, down, till the bolt closed good. So, next, I got some valve lapping compound, and lapped the bolt, and after alot of work cleaning it up, the bolt closes with about the right amount of effort on ALL of my brass. Next, I'll fire form the brass(again), and now, should be spacing on the shoulder. Any body got any thoughts on this?