I was having issues with my sig p320 xfive. Failure to fire was like it was not cycling properly and not striking the primer. Had six malfunctions during a uspsa match. I think it might be the recoil spring. any suggestions anyone.
Hopefully one of the moderators can move this to the "320" section, where someone with more knowledge of the P320 may help.
On the other hand, following the "trouble shooting" section in the Owners Manual may help. The question is, on your "Failure to Fires", was there a primer strike? Ammunition used can also have an effect, as can lubrication, if the slide doesn't "lock", due to lubrication or "out-of-specification" ammo, it won't fire.
Photos of the miss-fired cartridges at times can provide a clue.
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