Useful information. I want my wife’s Sig p238 (380) using the best ammo.
OTOH, doesn’t matter what you are shooting if you don’t hit the target in the right place. The FBI is going back to 9mm because they find the improved accuracy with a lower recoil round is more effective.
With newer and better self defense ammo, the 9mm looks like a better round than in the past. The 380 also seems better, but not much expansion.