Need some Freeper help. I recently acquired an old double-barrel, side by side 12 gauge shotgun in decent shape. The inscription reads "Riverside Arms, Chicopee Falls Mass". I think the gun was probably made in the 1930's. Here's my question: both 3 inch and 2.75 inch shells fit into the breech, but is this gun safely able to fire a 3 inch higher velocity shell? Is this even an issue with single and double shot shotguns, and the 2.75 vs 3 inch loads a discussion for pump and auto loaders....? Thanks y'all.
