Murray. Try Federal's 95 Gr. Hyda-Shoks. I have had 100% reliability from my German PPK/s. I did not have to polish a feed ramp or anything. I don't remember my manual saying I should use hardball ammo only. I'll have to check it out....It doesn't. Come to think of it, that one was made before all those fancy hollow points came out.
Murray. If your pistol is new, get some of the el cheapo hardball ammo like Winchester USA, Federal"s American Eagle, or Remington's UMC brand. Shoot up a couple of hundred rounds, say 200 to 250. They're all hardball, and as good as anything else more expensive for breaking in your gun. After that, get a box of the Federal 95 gr.Hydra-Shok, and try those. They are rated to be the best one shot stoppers in the .380 caliber. If they still don't work out, all you'll be out is the price of one box of ammo.
Paul B.