For reasons I hinted at last evening, I've developed an even stronger hunger for .30-06, and a rainy Sunday is devoted to loading some of the case stash, mostly military.
The primer pocket crimp we all curse is only part of the problem. Some of the pockets are just too tight to take a fresh one.
I de-crimp everything with a countersink chucked in a drill, and for some that quick operation is all it takes. My Autoprime loves 1950s cases from Lake City, particularly LC 54.
It hates everything from Denver, especially D 42, and I just toss those.
Winchester and Frankford head stamps are between those extremes, and after crushing too many primers I've decided to set them aside until I get around to creating either a power reamer or a press-mountable swage.
At the command of the TMR Legal Review Section, I remind newbies that any time you remove brass from a case you weaken it, maybe significantly, maybe not. I reserve anything I've cut into for conservative loads.