Hello. I bought a new PPK .380. I'm at the range for the first time, I slingshot one in the chamber, take the safety off, pull the trigger, and "click." I look at the round and there is a pretty significant indentation in the primer. I load the round again, pull the trigger, and it goes off. The same thing happened 60 rounds later with another brand of ammo. This gun is very tight. I have it well-lubricated, but in the first 80 rounds, I had four failures to feed because the rim would not properly slide underneath the extractor. Here is a photo of this phenomenon: I suspect the issue with the failures to feed is a break-in issue. I have also started lubricating the extractor. My main question is what might be causing the light primer strikes. A knowledgable friend suggested that it may have been marginally out of battery, and it just needs to break-in.