I have 500 rounds of target ammo and 40 rounds of federal hst through mine and never had light primer strikes or any other problem with my p320c. I used blazer, wwb, s&b ,American eagle and Remington. I think many of the light primer strikes are caused by the striker chamber not being cleaned and fired dry that some seem to suffer.
I have a Jan 2017 9MM Compact, it has never FTF/FTE or a light primer strike. I have ~1400 rounds through it, everything from cheapest white box to testing my Hornady Defensive rounds. Has not failed me once.
I use Blazer Brass 115 as my range ammo and Federal HST LE 147gr (SP) SD ammo. I now have 650 rounds through my P320C RX and not one issue..
Like any gun make, there is always a chance of getting a lemon that requires repair.. If we go on the belief that if I buy a new gun it might have issues so I'm not gona buy it, you will never get one..
I say just buy it.. Sig has a very good warranty program if you ever need it..
I saw this issue a while back as well. Now i cant remember the issue but nothing to worry about. Dont quote me but may have been a cleaning issue. I vleaned mine n lubed real well first time use n no problems. Sig has tight tolerances, it has to break in. Buy it with great confidence.
Just took my new 320c RX to the range for the first time on Sunday. Didn't clean off the factory gunk or lube, shot it straight out of the box with WWB and Federal. Probably put through 350-400 rounds back to back and not a single issue.
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