If it's not marked on the barrel, get a gunsmith to check it. Or, you can check it yourself with a fired hull.
Shotguns are chambered differently than other firearms. A shotgun chamber is long enough for the shell to completely open while in the chamber. The forcing cone is beyond that position, then the bore. At the very end of the barrel is a constriction called the choke.
So, if a fired 2 3/4 shell will chamber easily, then the gun is likely chambered for that shell, but only a gunsmith will be able to tell you with any authority.
Quote:
|
Will there likely be any catastrophic repercussions if I use a longer shell?
|
Probably not, but then again, if it's an old shotgun... who knows? You might get a KA-Boom, you might not. It's safer to have it checked.