I'm looking at getting either a slug barrel for my 12g Rem. 870 or a .45-70 for my TC Encore (or lever action). This will be used in a "short range" weapons hunt in my state for cow elk, as well as a stand/blind rifle in thick timbered areas for bucks (100yrds or less). Ballistics look similar (depending on the slug) between the 12g & .45-70.
This idea came up as I was archery hunting elk in an area that allowed a short range weapon for cows (short range in Idaho is bow, muzzleloader, shotgun, or any center fire "pistol" cartridge). I didn't want to pack my smoke pole (weight) AND my bow, but had several oppertunities at cows within 100 yards but out of bow range.