I was helping out last weekend at the indoor range I shoot at. I was watching over the 50yd rifle range. A guy came in with his 9 yr old son. He said they were getting ready for hunting season and were trying to get the sons rifle sighted in. He said he was in the previous week and the rifle was shooting all over the place. He took it home and changed the scope and was going to try it again. I then went to get another group set up while the first guy started shooting. As I returned to him I noticed it was a 243 handi rifle he was trying to sight in. He had shot 4 shots by this time and had about a 10 inch group. He asked if I knew what was going on with it since it shot bad with 2 different scopes. I said there are several things that can affect it, and I told him I knew a little about these rifles. I looked at the forearm and saw it was contacting the barrel. I removed it, removed the barrel and cleaned the latch and latch shelf. I had him rest it on the pivot and shoot it without the forearm. He shot one shot that was about 3" low of center. He looked at me and I said now shoot another. With a doubtful look on his face he shot another. the second shot was touching the first. He now looked amazed. We adjusted the scope a little higher and he proceeded to put 3 shots that touched each other an inch below the center. Problem solved. From junk to a tack driver in about 10 minutes. I told him about the o-ring trick, and he was thrilled. I also told him about GBO so he can learn some of the other tricks.
Kevin
