Looking for recommendations as to who could do a top rate job at a reasonable price. Or other suggestions. I have a Hepburn with a hopeless bore. It is very well worn. I would like to get minute of white tail groups at 100yds. I do not think this tube will do it. Rifling is visible, but just so worn down. Otherwise, the gun is a real rat, wrench marks on barrel, split stock, on and on. I would prefer to re-line in to 45-70 at 1 in 18 twist. Anybody got any directions for this? Or other ideas? thanks all