Handirifle, he listed his loads in the initial post. The second blown primer was about 3 grains below the load of the first one. He stated he checked for pressure signs. I assume he knows what to look for. Using the same brass and primers, t he only question I would ask other than those that have been asked is how do you charge your cases with powder. There may be a possibility that a heavier charge may have been put in the cases in question. Highly unlikely. I still would point to a primer problem. When he measures the primer pockets of the blown cases that may tell another story. It seems all the facts arnt in yet but I still think it is a primer or pocket problem.

El Lobo