Thread: Need help understanding shoulder bump

Gunsmithing &Reloading Tools - Redding Body Dies, Dies

My 2c: Go to this site and buy this die. Put your (primerless) brass in the holder and lower the lever with no die in, then put the die in and screw down it till it touches firm. Get you rifle ready and use it to chamber the brass in question, brass that don't fit are good! They tell you that your bump die needs screwing down more.
Just slowly repeat the trial and error method by screwing down this body die 1/16th each time till one of your sizings does result in a chamber.

Now you have the choice: set that as your goto resize / bump point or make it a little more (if that result caused a sticky bolt lift by not resizing enough).