I have question on the steel that was used in gun barrels during the transition from muzzle loading firearms to breech loading firearms. I am under the assumption that the steel in muzzle-loaders which was a quite mild steel, was continued to be used in the early breechloaders and better steel was not used until the invention of smokeless powder. I also have a question, can a breech loading barrel be made out of the same steel that modern muzzle loaders barrels are made out of, fireing lead projectiles and black powder, of course???? Thanks, Ed