I have some well used brass that has developed loose primer pockets but is otherwise in good condition. I had a couple primers fall out after being fired. These were 450 BPE with 2fg black powder and 320 gr. bullets so I am sure we are not talking overpressures. I got this brass used with no claim of once fired or such, just used brass. Seems no harm to the gun or shooter from the loose primers. If the primer stays in the pocket of the loaded rounds and fires fine, is it ok to use as is?
Tim