I was trying to sight in a rossi youth .243 today and had trouble getting the gun to group. I thought it may be the scope and changed that to a scope I knew worked and still had to the same problem. I noticed that the barrel gets extremely hot after a few shots. After the gun cooled it shot to a different point. Has anyone had a similiar problem? I was planing on shooting it again Sat a couple of times then letting it cool and repeat the process with a cold barrel.