need help identifying .22 black powder rifle
about three years ago I stumbled upon a little rifle, took a chance and traded for it, it is about 36 inches overall in length has a fairly plain one piece wood stock and is .22 caliber-the odd thing is the action, it rotates around and lifts out of the receiver and I believe you are supposed to load it and return it to fire, it has the initials R.M.A.C. on the side of the receiver and made in the usa pats pending below that, I was told it is called a turret breach, possibly made in the later 60's or early 70's by a company called rocky mountain arms corp, there was supposed to be a write up in the gun rags back about that time but I have been unable to confirm, I was also told that the source of ignition was supposed to be the little toy strips for cap guns. any information about this gun, especially a magazine article or any company literature would be most appreciated, any thoughts or opinions/ helpful ideas also gladly accepted, my thanks in advance, John
p.s. I purchased some .22 lead bullets intended for the little North American Arms .22 blackpowder revolver and plan on trying it out with some ffffg sometime, anybody have any thoughts on what powder charge to use? I am at work now but will try to upload a picture later, thanks