There are certainly plenty of BAD CCWs. Most of the time anything other than the preferred caliber of the guy you're talking to is a bad choice (there's one at my local Academy who's a .40S&W guy and if you ask him to recommend a personal defense weapon he'll hand you a Glock .40 and won't hear a word against them).
I think the worst choice for a CC handgun would be one of those tiny .22 revolvers. Sure they work and man are they concealable, but their effective range is just slightly outside arms' reach; I would feel safer with a knife.
Other bad choices (all of these assume you actually do carry it):
- A compact/ultra, when you can get away with something larger
- Any gun too big to hide convincingly
- Any gun that is uncontrollable, large or small (if you can't shoot it one-handed with reasonable accuracy, don't carry it)
- .380/9mm Short (the round just doesn't have the necessary oomph to do the damage)
- .32ACP - ditto
- Any gun, if you are never willing to use it to kill
- Any gun, if you are looking for a reason to use it
I think the worst choice for a CC handgun would be one of those tiny .22 revolvers. Sure they work and man are they concealable, but their effective range is just slightly outside arms' reach; I would feel safer with a knife.
Other bad choices (all of these assume you actually do carry it):
- A compact/ultra, when you can get away with something larger
- Any gun too big to hide convincingly
- Any gun that is uncontrollable, large or small (if you can't shoot it one-handed with reasonable accuracy, don't carry it)
- .380/9mm Short (the round just doesn't have the necessary oomph to do the damage)
- .32ACP - ditto
- Any gun, if you are never willing to use it to kill
- Any gun, if you are looking for a reason to use it