Thread: Primer Leakage

Assuming that you are using 20 grain projectiles your 9.5 grain load is below the Hodgdon start load. Some powders are very sensitive to sub max loads and the primers may not be expanding to seal in the case if the pockets are a little large. The surface of the primer looks dished in the photo which could be a sign of low pressure. Any problems with the first load assuming they were hand loads. Also hold the offending primer up to a strong light to see if there is a pinhole in the firing impression.
Grandpamac.