I loaded up a bunch of 45 acp & 223 ammo back in the early 90s. A 50 cal ammo can full of each. Have been shooting some of it now and then ever since. Recently at least 1/2 of them come out with the brass split. I even pulled some of the bullets out of the 45s to check the powder charge and the brass split when pulling the bullets with a kinetic puller. Probably most people don't keep ammo around that long but wondering if anyone has any ideas on this. The only thing I can come up with is the fact that this was before I started using latex gloves to handle cleaned brass and my finger prints are etched into them, maybe that weakened the brass.