Thread: Sizing loaded ammo?

I wonder what it would do to the neck, trying to squeeze it smaller with a projectile in it.
A shoulder bump might be okay, but if it turns out the cases are over-length like Max had they may clamp on the projectile in the chamber drastically raising pressure (and risk!).

Sizing them in a standard FL die will stuff the bullet the neck is sized about .005" under bullet diameter,
Best solution is to use a Redding body die bumps the shoulder back and sizes the base with out touching the neck
I use it as the last step on my Dillon 550 when loading .223"s

FL size ten and shoot them. May save you time and money.

It will crimp the bullets rather hard as shooternz says, but, then again, they may obturate quite well, what with what is a very tight crimp. No way of telling until you try.

Wear eye protection.