Drat! Never a hiccup, then I started having some -- could be a couple sources -- including not shooting for several months.
I bought some 124 gr. American Eagles at the range, loaded three, shot, then had two rounds feed at the same time -- happend a couple more times.
Switched to loading full mags, still problems -- gold dots, no problem, silver tips, no problem -- at which point, I was pushing 60 rounds, and getting tired.
I'm close, if not past, 250 rounds, so it might be the recoil spring.
Any other suggestions? The little pup's always managed to eat everything in sight before.