I have some “nickel plated” brass that’s far more brass than nickel after all of the shooting, cleaning, reloading cycles they’ve been through.
If you can still read the headstamp, they are just pups.
The 45 acp rim diameter may get larger from many firings, causing feeding problems. Case head can't slide up the bolt face freely. Nicks on rim may do same.
Brass from hot loaded S&W 645 caused jams in lite loaded Gold Cup for me.
That's interesting. I've noticed some of my well loved 10mm Auto brass begins having trouble extracting. The rims don't seem that chewed up, but maybe they have changed diameter as well. I'll have to check.
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