.300 WM Die Questions

.30kal

The Real .30kal
Full Member
Minuteman
  • Jun 24, 2011
    293
    121
    San Jose, CA
    I'm in the process of building a 300 WM and am looking at dies. I was thinking of going with a Redding Type S FL sizing die and a Foster Micrometer seater. However, with the belted case, a few have suggested going with a Foster neck/shoulder bump die and a separate body die to address the bulging that may occur right above the belt. Just wanted to get as sense of what has been working for you guys.
     
    I use a standard RCBS FL die set to bump the shoulders back .002. I have brass with 5-7 reloads with no issues. The buldging issue Typically comes form brass building up at the belt due to continued FL sizing. If you only shoulder bump you should be fine.
     
    A body die is not going to get bulge. Get whatever die set you like, then you will need a Larry Willis collet die. You may not need it right away, depending on how hard you are pushing it, but you will need it eventually to make the brass fit again.