Those old H&R shotgun ads that Researcher provided mention a clambering for a .45-70 shot cartridge. I've heard of people who attempted to make shot loads using .45-70 brass for short range loads in various rifles, but never heard of a dedicated shotgun chambered for .45-70. Was this a handloading proposition, or did one of the major ammo manufacturers actually produce .45-70 shotshells? Seems like an idea that might have actually gotten traction, except for the potential problems of someone firing rifle loads in a choked shotgun bore.
