Undersize new brass load normal or light first shot.

[JEFFPPC]

This is when creating a false shoulder is the way to go. Neck up, neck down, and set the head space dead nuts. Brass will last forever and never separates, as it never really stretched in the first place.

Paul

I agree with and will add what helps keep your brass a more uniform and longer length. Keep your chamber clea, do not oil your brass it should be clean snd dry I don't care what you read, every five shots let the chamber cool to neutral temp and clean chamber. You will get more consitant brass. If your hyper, have no patience, and are always in a hurry....just keep doing it your way.