I have a G23C with a 357sig Barstow barrel. Last week, i replaced the 357 with the original 40 barrel so that i could try some new 40 ammo that was given to me. My son borrowed the gun yesterday for practice. I forgot to tell him that i had changed the barrel. You guessed it. he loaded it with a magazine of 357 sigs. Anyone want to venture a guess of what occured when he shot it?