I seem to shoot a 40S&W alot better than I do a 9mm. Why would that be? I think I may be more confident with the higher power factor and the muzzle flip feels is like a 9mm to me. I shot a G17 in CivAm but I will now be shooting my new G22 so all my guns will be forties and because I prefer that caliber. Does anyone know why I would shoot a G22 40cal better than I do a G17 9mm? I have no idea but I knew the people here were the ones to ask.