I own an Interarms PPK/S that has a minor glitch. Every once in a while, a round will only go about 9/10 of the way into the chamber. I'm thinking the recoil spring is getting weak. Any other suggestions?
I've tried two different mags and four brands of ammo (FMJ) all with the same result. I got it used so I don't know how much it was shot, but it's in really good shape. When I stripped it for cleaning the muzzle end of the spring had a most noticible upward bend.
I also had an Interarms PPK/S that I bought used. It was in terrific shape. But like yours, it jammed intermittently on me. I tried all different types of ammunition, but the situation persisted. Because I had bought it for personal protection, I sold it and bought a Beretta 84FS. As big a Walther fan as I am, I never had any confidence in the particular PPK/S I owned.
If not the spring, you might need to throat and polish the feed ramp. With a magnifying glass take a look in there. At times, a very small scratch in the wrong place can provoke the situation you speak of.
Well, I just replaced the old recoil spring with a Factory Load one from Wolff. I haven't fired it yet, but does it ever feel tighter and when I chambered a dummy round it snapped in from the magazine well. I'll try it today and let you know...