I recently had a 338 ultra mag trued, rebarrelled and chambered for 300 wsm. The problem is that the cases are getting stuck in the bolt face and won't eject. I measured the bolt face and it is .535 and the cartridge rim is basically the same size so they cannot tilt and eject. If u remove the bolt and insert a case by hand, you can't even spin them but with some effort I can tilt them out. I have a stiller action and its bolt face is .550 and works perfect for 300wsm. So, did my gunsmith mess up and not check it and open it up?