Thread: Need help understanding shoulder bump

Pretty well covered by ebf. What I also do is remove the firing pin/spring mechanism from the bolt - not sure whether the Savage lends itself to this. You can then try your brass for bolt closing without the influence of the firing pin spring holding the bolt hard back against the locking lugs. For hunting reloads and cartridges that stretch after only a few loadings 2 thou is good. For my target loads and the likes of my Ackley where the brass just doesn’t move after only a few firings I set the die so that I get a very very small resistance at the very last part of closing the bolt.

As always lubricate the locking lugs.