I had a Walther PPK 9mm short (.380). I bought it brand new and I couldn’t fire more than 3 rounds without stove piping. Didn’t matter the quality of ammo either. Took into the gun store where I bought it and they were baffled too, and they tried several times to fix it. Finally they allowed me to trade it for a Beretta 84F (380.). I loved that pistol. Had twice the capacity of the Walther, no problems with cycling and was dead on accurate out of the box.
The PPKs from Interarms in the 80’s were bad news. The one’s produced in the 2000’s by collaboration between S&W and Walther were much better.
The Beretta is a superior gun, but big for a .380.