I agree that the Walther PPK kicks extremely hard for the power of the cartridge. I find it unpleasant to shoot, and too heavy and too large for the power factor and limited magazine capacity. (A Kel-Tec P11 is about the same size, is much lighter and holds 10+1 of 9x19 power. No contest. And it costs much less!) I attribute most of the felt recoil of the Walther to the blow-back design. The Kel-Tec has a locked breech, as do the Colt exposed-hammer .380ACP pistols, all soft-recoiling compared to the Walther design.
(Apologies to anyone offended by my "delivery.")
(Apologies to anyone offended by my "delivery.")