I've started having a problem with my P365 not ejecting the spent case and jamming with the incoming round. The spent case stays in the barrel chamber. I don't know how many times the brass has been reloaded and was wondering if weakening brass could be the issue. I've been reloading for over 30 years and this is a first. No problems with the same ammo in my G19.
At first blush I'd say your extractor is the place to start looking for the problem. I'd suggest you shoot a few magazines of your hand loads and a couple of magazines factory ammunition.
If the extractor is bad you should experience this problem with all the ammunition. If only your hand load fails to extract the problem is with your pistol. If that happens it would help a good bit if can post some clear close up pics of the fired cases from various angles.
From the information in your post I would guess you have a damaged extractor.
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Thanks for the replies. I just shot 40 rounds of winchester 115 gr and about 30 of my reloads. It failed to eject one of the winchester and 2 of mine. What I can't figure is why it just started doing it. I ordered a new extractor kit and plan on trying that.
The new ejector didn't fit so I'm going to contact sig about that. I ordered and receive the lee factory crimp die and reloaded 100 round using it. I also purchase 50 rounds of federal 115 gr. fmj. The new reloads with the lee die worked fine as did the federal ammo. I did some measuring of the reloads that were causing the problem and can't really find the difference. Anyway the problem seems to be fixed. Thanks for your help.