case trim length

[Lead hammer]

So for new brass, after sizing, do you trim to length, or trim to the shortest brass of your batch? Does the brass "shrink" in length after fire forming, or does the case stretch to compensate for that?

 

[maynard]

Your case will stretch farther when resizing than it will by shooting it. Don't worry too much about a couple thousands of a inch difference in case length. Trim to book length, the shorter cases will eventually get there and the longer cases will be back to spec.

 

[Lead hammer]

Ya I think your right. I just trimmed them a hair long. Trim to length of 1.910, max length of 1.920. I went 1.914. See after shooting them what they do.

 

[Kryogen]

trim to book length and don't bother