What do folks do with regards case trimming for AR plinking ammo? Do you trim everything to the same length? Or do you do the standard anything-over-1.760"-gets-trimmed-to-1.750" - and live with varying case lengths?
I noticed recently I was getting occasional shoulder crushing. After a bunch of investigation it appears it was due to over-crimping - which was only being encountered when a case on the long side of the spec was going into the die. As I recall I didn't pay attention to what the case length was that I used to set up the die initially.
I'm thinking of setting everything up using a case at 1.759" and then seeing how shorter length cases come out (with regards to case mouth position on the cannelure as well as crimp).
How do folks handle this trimming/crimp balance?
Thanks!
OR
I noticed recently I was getting occasional shoulder crushing. After a bunch of investigation it appears it was due to over-crimping - which was only being encountered when a case on the long side of the spec was going into the die. As I recall I didn't pay attention to what the case length was that I used to set up the die initially.
I'm thinking of setting everything up using a case at 1.759" and then seeing how shorter length cases come out (with regards to case mouth position on the cannelure as well as crimp).
How do folks handle this trimming/crimp balance?
Thanks!
OR