Rb - BP is not the key to shooting older guns. Knowing the gun's working pressure and condition are. Nitro loads can be loaded or bought that will have less pressure than is typical of BP loads. That is NOT, NOT, NOT an across the board endorsement of nitro loads in old guns! It is recognition of the fact that under certain known conditions nitro loads work. Matter of fact, typical BP loads are a tad on the high pressure side for many old guns. If you don't know what the working pressure of the gun you have is, don't shoot it - BP or nitro. Once you figure out the working pressure, then shoot either BP or nitro of appropriate pressure. Low pressure loads are good for the metal and low recoil loads are good for the wood.
