Cases seems to grow too much

[Tac-O]

I had this problem in my 7 saum talked to gunsmith and he new exactly right away. Sometimes gunsmiths hand finish the reaming and can over ream. At least that is what happened to me. So measure and see if that is what happened.

Nope. I own the reamer and all my cases come out at what I specd the chamber at. I'm betting my shoulder diameter between chamber and sizing die is contributing significantly

 

[hitmancustoms]

Nope. I own the reamer and all my cases come out at what I specd the chamber at. I'm betting my shoulder diameter between chamber and sizing die is contributing significantly

That is a very good bet. I know I was scratching my head for a month and couldn't figure it out. I went thru 3'dies n cracked 2 Redding dies bcuz mine grew a bit more than yours n not
Knowing it