I know a guy (and no, it wasn't me) who, as a teenager, snuck his father's 10 ga Rem 1894 out of the house to duck hunt with the only 10 shells he could find, 3.5" steel loads. The gun was totally original, no lengthened chambers. It survived most of a box of said steel loads with no visible damage. I've handled the gun and its as tight as one could wish a 100 year old gun to be.

He did say however, that it kicked quite a bit.

Mergus

Duckboats, decoys and double barrels...