So this may be a weird question, and if I'm in the wrong subforum feel free to move it.
I've got a barrelless Carcano action sitting at the house currently that was made by Beretta, and I've had a few ideas that I never did anything with for it. A local gun shop has a barrel full of barrels that are mostly from shotguns, but there's 2 fairly new muzzleloader rifle barrels in there. They both look to be around .50 cal, but they're also cheap. Since the .50 Beowulf/12.7x42 cartridge will fit the Carcano bolt face and is a low pressure round, I'm debating turning that action into a single shot, .50 Beowulf Carcano using one of those muzzleloader barrels. Would I be asking for it to be a time bomb, or is the .50 Beowulf a sufficiently low pressure cartridge that I shouldn't have any issues using a muzzleloading .50 barrel as a blank for the conversion?
