My P238 was one of the early ones, and I had a very few jams with some hollow points not feeding occasionally. I polished the feed ramp, which had fairly heavy tooling marks, and never had a failure after that with FMJ, plated, HP's and Buffalo Bore lead flat points. It's been absolutely reliable for about 2,000 rounds now. I did find I had to use the 7-round mags with the pinky extension to shoot it well. My arthritis is really affecting my hand strength and dexterity, and the extra finger grip really helps with that.
In fact because I can no longer make a tight fist, I found the P938's slightly longer front-to-back grip more to my liking, because it fills my grip more and doesn't require me to close my fist as much as the P238.
I bought one about 18 months ago, once again use the mags with pinky extension, and love it. I noticed that the feed ramp was well-polished from the factory on the P938, and I've yet to have a malfunction with 115 gr and 124 gr FMJ, JHP and the ~conical Hornady 115 gr FTX Critical Defense.
My only hiccup with the P938 was from it's ambidextrous safety. I carry mostly OSWB at ~3:30. Three times I scared myself silly when I found myself carrying cocked with safety OFF. I finally realized I was bumping the exposed weak-side safety moving around my shop and it moved to OFF without my realizing it. I removed the weak side safety lever and no problems since.
I found both guns accurate, with good sights, (excellent tritium night sights) and shoot to point of aim at seven yards with common SD ammo.