01-04-2023, 04:20 AM
(01-04-2023, 03:22 AM)aknott1994 Wrote: I put together some data for IMR 3031 to test, but my cases will not chamber after sizing. Every dimension matches but case length from an unfired piece of new hornady brass that will chamber. Could 5 thousandths case length prevent a case from chambering? They are right at 1.490 and the factory is 1.485.
What is your headspace measuring?