hi all im new to all this world of firearms ,,ive got a .22ruger and a mosin nagant 7.62 rifle .want to get into muzzle loaders ,need to know what i can get with my calibre on my certicate , ive got on it .44 rifle ,,.223 rifle ,,.303 rifle and 7.62/308 rifle ,can i get any muzzle loaders with this or will i need to send back my form to get a new one put on ,any help would be great thanks tony