I have two characters in a fairly small, confined space. A is chained up and fastened to the wall by heavy, inflexible cuffs/manacles, connected by a bar or panel - possibly with a thick hinge - rather than a chain. B is struggling, and failing, to free him. This is as it should be! Failure is what I want to happen.
However it has just occurred to me that character B has a gun and is desperate and the idea of shooting through the connection between the cuffs might go through his mind. If he did it, what would happen? If he fired from a short distance? Point-blank? He's no great marksman and doesn't know much about guns, (although more than I do).
I don't much want him to try it at all, and if he does, I certainly don't want it to work. So I am hoping for boring, undramatic answers like "You fool! The bullet will ping off and take out your eye or that of your intended rescuee! There will be some other type of terrible carnage! Do not do it under any circumstances!"
I expect the type of gun becomes relevant now which is annoying because it didn't matter at all before the silly character got this notion and hence I have no real idea. It's a handgun, and, er... preferably something that certainly won't help in these circumstances. Something like a Glock pistol, perhaps.
Searches - google and youtube on "shooting locks" etc. Found a youtube video refuting Mythbusters' "bust" of the "shoot a padlock off a door" myth - i.e, illustrating that you could, with the right kind of round. But that was from a distance, and rather a different scenario anyway.
"Shooting handcuffs" just unearthed slightly disturbing people who listed "shooting, handcuffs" among their interests
EDIT: Thank you very much, everyone! I have what I need.