This is a general inquiry which covers multiple forums subjects. Have spent several hours searching the various forums and threads for info concerning machined rest bench rifles. Since I am finding little specific info I have decided to start a thread requesting individuals with knowledge or similar interest to respond. I have acquired a 38 lb, .61 cal muzzle loading underhammer, no maker marks I can find. With out going into detail here I believe it may be a Lester Cox rifle from the early 40's. Have shot a few dozen rnd ball out of it and beyond that have not much experience with this particular type of rifle or this aspect of shooting. Talk back appreciated.