RE: how long have you been using one
Started off back in the 1970s. I believe I started with a T/C Seneca with both the .36 & .45 barrels. The .36 was a tack driver and I won several matches with it at a local shoot.
I'll always remember one 100 yard 3 shot match where I fired my 3 shots and the rangemaster informed me I had made 2 good shots, but one missed the whole target. I told him I didn't think it had missed but he insisted I shoot another shot. I loaded up & fired and he looked through the spotting scope then looked at me and said, "I guess you didn't miss after all!" I had a score of 30- 2X but it would have been 30 - 3X if they had counted the 2 balls through the same hole! I had put 4 shots in the 10 ring at 100 yards with it (offhand)!The .45 barrelwas too light to hold steady, so I didn't shoot so well with it. [:@]