Fatelvis
Member
In the past, I've been FL sizing, as shown in the instructions, w/ the die touching the shellplate. I've gotten head seps after 2 firings, so I determined I'm sizing them too much. (I'm using a milder load of 40.5 grns. of 4895 under a 168 SMK in LC cases). I've read Zediker's "Once fried" and many other things concerning loading for the M14, but have one question...... If I shut off the gas valve to make the rifle a single shot, can I use THAT fired case as a reference as to the chamber dimensions,(unlike the semi-auto case that is not accurate) and in turn, adjust my FL sizer accordingly? Thanx alot-