All my muzzle loaders, from the first one I assembled to those I have bought have all used two machine screws through the wood from the left side into the lock plate to hold it firm. Except one I bought recently from a member here that had ONE machine screw through the lock from the right side into the breech plug. The lock plate is solid but when I replaced the stock that came with the rifle with a piece of fancy walnut it was really hard to make sure there was enough of a flange for the backside of the plate to sit against. The left side is super clean looking so nothing interrupts the walnut grain. I am building a new Lehigh long rifle and have the barrel, lock and trigger inlet but have not drilled any holes yet.
What are you folks thoughts on one VS two lock screws?