I have a Marlin 981T that I bought new back in 2004. It never would shoot better than 2" at 50 yards. While looking at the crown a while back I noticed the crown had a chamfer on one side but not the other. So I re-crowned it with a button head screw and grinding compound followed by lapping compound. Groups dropped to 1" at 50 yards with 3 out of 5 touching. This is using a 4X scope.