Bought Walter p22 couple months back. Only rounds I find it'll shoot is CCI minimags. Hates Federals, tried Winchester super X, Remington thunders etc. hates them all. Won't eject or stovepipes. At the range today ran into a gal that had no probs running old corroded crab in hers with no problems. Was an older version than mine. LGS, Gander and Cabela's say no such complaints from customers. Called Walther, they think I'm shot a past sober. Love the gun, the feel, keep a pretty tight group at 10 meters but I didn't buy a singles shooter. Any thoughts from you P22 owners will be welcomed.