dad\'s gun shoots weird this may be something basic that i need to fix, but i dont know what it is, so im asking for help from you guys. its a savage 110 243 that used to shoot very well. he could usually cover 5 shots with a 50cent piece at 200 yards. he changed to a different scope for shooting groundhogs a couple years ago, and things have gone south since then. going back to the original 4x scope didnt seem to make it any better. yesterday i went to the range with it to see what it would do. the lighter the bullet, the farther left it shoots. or the heavier, the further right it shoots. 55gr noslers with 45gr varget shoot a 3" group roughly 1.5" left and 1" high. 70grbt's shoot down the center, 87gr vmax's shoot 2" right and 1" low, and the 95gr partitions shoot a full 6" to the right in a 3.5" group. i dont quite understand whats going on. is my action loose? the barrel is floated, and the trigger has been lightened, but thats it. everythings tight. i did scrub about a pound of copper out of it before i did this and it improved, and now im waiting on the bore-scrubber as i type this. it holds alot of copper. is that bad? ive never had a rifle use so many rags. those groups were at 200 yards. is it maybe time for a new barrel? its an older gun that has had a ton of pills down the tube, and rarely cleaned (inside). im the first to ever put any ammonia in the tube. maybe a trip to the gunsmith for a borescope?