I never had an issue with Stingers in any .22 I've used. I have had issues with them in the MAGAZINE. In my Colt .22 I could only fit 9 in a 10 round mag. I haven't figured that one out yet.
Unless you have a true match chamber Stingers are fine. Even the PC model that is supposed to be match chamber is sloppy from what I've seen. Easiest way to determine a true match chamber is if the bolt will not extract and unfired round its a match chamber. You won't find many on a sub 1000.00 factory rifle. Much less a semi auto. It's difficult to get a semi auto to run consistently with a match chambered barrel, reason being the dimensions are so exact everything has to be in perfect alignment.
