The Firing Line Forums - View Single Post - Resizing - FL, NK, Lee Collet, FL bushing

Bart B. · February 21, 2013, 04:42 PM

603, try a bushing one size larger in the die so there'll be less neck tension; too much neck tension will hurt accuracy and sometimes ends up bending the case neck at its junction with the shoulder. One that's .001" smaller than a loaded round's neck diameter may make the most accurate ammo.

Then seat bullets out to where the just barely set back a few thousandths when chambered. That'll center them very well and help uniform startup resistance so velocity will be more consistant.

Good to see you fixed some mistakes. There's a few dozen I've made over the years. Finding and fixing 'em makes one smarter. . .if we remember them.

February 21, 2013, 04:42 PM	#25
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	603, try a bushing one size larger in the die so there'll be less neck tension; too much neck tension will hurt accuracy and sometimes ends up bending the case neck at its junction with the shoulder. One that's .001" smaller than a loaded round's neck diameter may make the most accurate ammo. Then seat bullets out to where the just barely set back a few thousandths when chambered. That'll center them very well and help uniform startup resistance so velocity will be more consistant. Good to see you fixed some mistakes. There's a few dozen I've made over the years. Finding and fixing 'em makes one smarter. . .if we remember them. Last edited by Bart B.; February 21, 2013 at 06:01 PM.