I was doing some load development this morning with my T/C Encore 22-250AI and had my first case separation in over 35 years of reloading. Brass was twice fired Lapua 22-250 Rem. Load was 40.0 grains of a Varget which Nosler lists as their max load for a 52 grain bullet. I worked up to this
Incipient Case Head Separation?
Case head separation or sizing die marks?
Case Head Bulge ? Northwest Firearms
The dreaded incipient case head separation
Case head separation
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Sign of possible case head separation?
Case Head Separation????
Out of battery or bad brass/bad load?
Isn't brass supposed to stretch after firing - The Firing Line Forums
The dreaded incipient case head separation
Avoiding case head separation by measurement