This may have been covered before, May be a stupid question etc but here it goes:
Suppose someone liked the look/idea of a BC but didnt want a 45/70. How would you turn a BC into a 45 LC, a 44 Mag, a 357 etc?
There are companies that re-barrel and re-chamber rifles, would this be the way to go?
Could you send a BC receiver back to H&R to put a long (32") barrel in another chambering on it?
H&R Made the 45 Colt Buffalo Classic Carbine for 2yrs before it was dropped from production in 2008, H&R doesn't do custom barrel lengths, just what's listed on the accessory barrel page of their website and maybe those listed in the new accessory barrel sticky if you're lucky, no one makes barrels for H&R rifles except H&R, although a good gunsmith can do a stub, or rebore which are the only ways you get there with a long barrel, the 45-70 BC barrel can't be made into a 45 Colt, the Colt bore is smaller. H&R may still have some 45 Colt accessory barrels, the BC frame is just a faux case colored SB2 frame, they'll refinish an SB2 frame that way for $30 plus shipping if you can't find one, the short BC Carbine forend is no longer available I think, so you'd be stuck with a long BC forend, stocks are still available tho, so you can add a stock set to any frame and barrel you can come up with.
There was a .45 LC long barrel octagonal made, Target Classic I think? Probably not a rechamber project, more like a custom barrel if you want a 32" in 357 or 44.
The Target Classic was only available in a 28" 38-55, and never a octagon barrel that I've ever seen or heard of, but anyone with a mill can make their own, I've done two of them myself, a 24" 405 Win and a 20" 444 Marlin.
Tim