Disqualifying a gun as a carry gun due to its age is just plain stupid. Some folks carry this "Junior G Man", "Tacticool" **** just a little bit too far. We are talking about guns, not mayonnaise. They don't spoil.
Some of the best guns mankind ever has, or ever will see was made seventy to a hundred years ago. If it is in good shape and reliable there is no reason to disqualify it.
You don't need fifteen or even twenty shots. You need one placed in the right place. Some folks need to quit standing at the three yard line while they spray and pray with their twenty round magazines. They need to step out to the twenty-five yard line and teach themselves to actually shoot, one round at a time. I know that "Call of Duty" and other such video games would have you believing that if you lay down a barrage of fire with the latest plastic wonder you are one Hell of an "operator". But you might want to read about the philosophy of people like Wyatt Earp, Frank Hamer, Wild Bill Hickok, or more recently Bill Jordan. All people who spent very little time fantasizing about gun fights because they were actually in them and won. They will tell you, to a man, that the way to survive a gun fight is to put one shot exactly where it needs to go, and have the sack to stand there, maybe even take a bullet, while you line up your shot, and put the guy in front of you down. If you can't do both of these, you probably ought to stay out of gun fights. You are not going to get to hit the "replay" button and do it again. And, you don't need a twenty shot magazine to do this. These guys would tell you that by the time you get to round three you are probably already dead.
Sorry. Had to get it off my chest. If you disagree, that's fine. I am not responsible for your safety.