Pleasure indeed. We shot the rifle a bit of course, to proof and test for accuracy of the naked .650balls from the Rapine mould. Very high quality mould, too. .650 is the grouve dia of the barrel. The balls were rolled in lube, about 60% vasleline/40% beeswax(good stuff). The rifle shot amazingly well to 100yds with Taylor holding about a 5" offhand group at that range. Ignition was very good considering we were using 2F for priming the first day. The second day, 4F was used in the pan with quicker ignition, of course. The chamber held only about 55gr. 2F with the ball up front. Indeed, loading was very fast. The "Breech Screw" has 11 threads. Apparently Sporting Ferguson Rifles had 10 threads on the screw. This threaded plug, is tapered bottom to top with one complete revolution of the guard dropping the plug approx 1 3/4" to expose the 'chamber' of the barrel. Gas leakage was evident,but with a low cap on, it wasn't noticable. Otherwise, granules of powder did hit the forehead & mine goes back a long way. - HA! I can't imagine what sort of problems cutting those threads would have been prior to 1800, let alone today. Ingenious system, but with our present day powder, the screw fouled quite quickly.
Daryl