My 223 Ultra stuck like crazy (3-4 out of 10 shots) when I first got it, but even that first time out, didn't stick at all with Winchester ammo. I read a few posts elsewhere on the problem, then took it apart and cleaned it thoroughly. The one thing I do is ALWAYS make sure the chamber is clean & dry; now it shoots everything I run through it and haven't had one stick since. Also, I was advised to avoid Wolf ammo in the Handi's; the cases are coated, which then melts when you fire them and they stick real bad.