Anyone shoot one of these rifles ? Looking for some loading advice not load data but advise , bullet weight for cast bullet loads and need to know a little more about my rifle . It appears to have a 1 in 20" twist with a 26.5" barrel , fixed sights with a flip up leaf sight for longer range , mfg. date from 1908 to 1925 they usually have a octagon barrel but mine is round and a nice weight with a excellent bore , single shot bolt action ! Just needing some more information please !