Not scientific by any means, but...
Having shot a P3AT and a P-32 back-to-back, I was shocked at the difference in recoil between the two. Given the fact that the frames are identical, that difference tells me that the 380 is significantly more powerful than the 32. (That whole equal-and-opposite reaction thing...)
As a matter of fact, the pitiful recoil of the 32 was enough to convince me, right then and there, that I would never carry that caliber. FWIW, I don't carry a .380 either, but that is more due to the fact tat neither of my P3ATs is/was reliable...
YMMV
