Originally Posted by marioq
By smoking u mean put a match or lighter to get it black?
Then gently slide into the chamber to see where it contacts?
If I do that, how do I them change my die??
By the way, die has a case stuck so I have to solve that issue first.
I'll measure the wall thickness. I have a standard electronic micrometer so I hope that will work.
Work in progress I guess. Hahahahha
If the necks have thickened you'll have to turn them down specifically for that rifle. What I'd probably do is save my brass from that rifle and mic the wall thickness and save one loaded round that chambers fine.
carefully remove the bullet from that loaded round and mic it both outer diameter and wall thickness. Then turn down your fired bras to match the wall thickness, resize it, mic it again and compare the neck to one that's chambering fine.
Pain in the ass but it's the shortest route to success I can think of short of just tossing those that don't chamber at all.
Yes, what I mean by smoking is to soot it up with a candle or match, not sure if a match will do it as they burn pretty cleanly but give it a try with what you have.
As for what to do when you know for sure where the contact is, that'll depend on what it shows.