Since that caliber is a handloader's cartridge, it should be fine for those smart enough to know the 44 1/2's limitations. If it was a caliber that factory loads were available, then one needs to be careful. But since nothing can be purchased over the counter, the owner needs to simply load for the strength of that action.
It is a very nicely done stock, but I'd probably strip the blue off the receiver and have it cased if I owned the gun.