Many years ago, I mistakenly fired a 38 Super round(hand loaded to ultra major) in a 45 ACP Model 1911. The round was top one of a magazine full. The round cleared the barrel OK and split the case and blew it out to 45 ACP diameter. I keep the ruined case on my loading bench as a reminder to try not to do stupid things....it works most of the time.

When I go to the range with more than one caliber, I'm much more careful to avoid mixing ammo.

__________________
Bob.
SWCA 1821