That is a big one but not the biggest. They made 900 of those in 10 gauge back in the 1910's. I know because that was the first gun my dad taught me how to take apart an put back together. My dad was a part-time gunsmith for most of my life. By the way, did you know the originals will fire as fast as you can cycle the lever?OH YEAH!!! I own the biggest caliber lever gun that is offered... 12ga. baby!!!
TW