I was out shooting my .410 saiga shotgun with my dad yesterday. He had one of his .45 Colt revolvers and I noticed the cases had the same face. I loaded up a 45 colt round into the shotgun and lit it off. It went pop and a bullet flew out the end. Imagine that . Anyway since the .45 colt is just a shortened .45-70 I suppose the shotgun would chamber that round as well. No if I were to but barrel and chamber it for the 45-70 round and use the same bolt, magazine and trunion does anyone think it would work? As far as I know the .410 shotgun cartrdige was based on the .45-70 chamber to allow old rolling block military rifles to fire shotgun shells so I'm thinking its not too much of a stretch. The only real drawback as far as I can tell is that the .410 mags only hold 4 rounds. Maybe the PSL mags could be modified to work.