I had one back in the day. Wish I still had it. Moved to a state where I could shoot a rifle all I pleased... never considered that I might move back to shotgunville someday.
At any rate.... I shot solid copper Barnes Expanders out of mine... it liked them well. I also shot some solid copper remingtons... I killed a couple deer with both.
Make sure you shoot sabots or foster style slugs out of it... rifled slugs go down smooth bores! Rifled barrels need sabots!