Sherpa: Many people, including yours truly, have succumbed to the mystique of the PPK. Most fall out of love with the little pistol fairly quickly if they shoot it much. The chief advantage of the PPK is that it is small, hence it conceals easily. However, it is a straight blowback action which means it recoils very sharply in the hand. Worse, the barrel/feedramp are stationary, which makes malfunctions of feeding much more likely than in a tilt-barrel action such as most modern autopistols have.
The .380 ACP cartridge is not an adequate caliber for LEA off-duty use according to numerous testing protocols. As Dr. Gary Roberts writes, based on much research:
"The terminal performance of .380 ACP jacketed hollow point (JHP) bullets is often erratic, with inadequate penetration and inconsistent expansion being common problems, while .380 ACP full metal jacket (FMJ) bullets offer adequate penetration, but no expansion. All of the .380 ACP JHP loads we have tested, including CorBon, Hornady, Federal, Remington, Speer, and Winchester exhibited inconsistent, unacceptable terminal performance for law enforcement back-up and off duty self-defense use due to inadequate penetration or inadequate expansion. The use of .380 ACP and smaller caliber weapons is not acceptable for law enforcement use and most knowledgable agencies prohibit their use--based on past experience, to my knowledge none of the agencies you mention currently use .380's."
I don't want to burst your balloon, but my reading of the literature leads me to agree with Dr. Roberts. I found my PPK to be unreliable with most JHP ammo when I had it. Even when I found JHP ammo that WOULD work, there was no guarantee the next lot of ammo of the same brand would work.
For a similar price to the PPK, you can pick up a Kahr MK9, which is the same size as the PPK, fires a much more powerful and reliable cartridge (9mm), and is much, much easier to shoot.
If you wish to keep your PPK, I would stick with ball ammunition for carry.