The problem with anyone building a new firearm around this and coming out with hotter loads for it is the liability of someone putting it in something like an old trapdoor or rolling block. That's why they came out with the 450 marlin. It doesn't do anything that couldn't be done with the 45-70, but they didn't want the liability of selling full power loads that someone would end up sticking in a trapdoor and getting hurt.yeah been looking at a 50-70. in fact in stead of s&w coming out with a 500 smith&wesson they should just have made the 50-70 smokeless probably would had made r&d cheaper lol.There in the same power-class.Im thinking a 458 socom build now though
You know, I'm sorry to say that this very cool option didn't come to mind to me because I'm so into the sharps and trapdoors. I would love one of these guns also.You can buy current Winchester 1885's in 50-90, if you don't mind going slightly longer on your cartridge.