Rodger,
I fire form for three different AIs and get primers that look like that all the time. My loads(like Jake's) are around 50k psi for the standard case. Even if jamming the bullets adds 7-10k psi your still well within safety parameters. I'm not sure; but the primers may be a sign of not having the bullets engaging the lands. My primers are more flattened than cratered.
Scott
I fire form for three different AIs and get primers that look like that all the time. My loads(like Jake's) are around 50k psi for the standard case. Even if jamming the bullets adds 7-10k psi your still well within safety parameters. I'm not sure; but the primers may be a sign of not having the bullets engaging the lands. My primers are more flattened than cratered.
Scott