Smart Marine for carrying a .45 ACP rather than the 9mm issue. Correct me here but I do not think the .45 is standard issue in the Semper Fi group.
SERIOUSLY????
1. You really believe that a person needs a .45ACP to shoot a hole in someone's elbow?
2. Whether he did or didn't use the issue weapon for the Marines is neither here nor there. They don't let the military take their issue weapons home so the fact that he wasn't using one means nothing.
At least he had the very good sense to have a powerful pistol on hand...
The power of the pistol has nothing to do with this particular situation.
Unless you're claiming that the robbers read the caliber markings on the pistol or examined the bore diameter to determine how effective the pistol was going to be? Or maybe they were so experienced with firearms that they were able to determine the power of the pistol based purely on the sound of the reports--and that's what made them flee? Or perhaps the guy who took a round in the elbow told his buddies that it was a .45ACP based on the impact and that's when they decided that they should turn tail.
Come on...
This may not be EXACTLY what happened, but you can bet it's very close.
The guy pulled out the gun and at the sight of a firearm, everyone at the scene but him turned inside out, desperately trying to be somewhere else instantly. They were all moving so fast that the victim could only get a couple of shots off and was only able to score one peripheral hit before they were out the door.
Just to be clear, I'd say that it makes good sense to have a powerful pistol on hand (whatever your definition of powerful is) but in this particular case, it sounds like the caliber/power of the weapon involved had just about zero to do with the outcome.