My 110 started out as the xp package gun. Results were not as dramatic as what you're describing but I did have some inconsistent accuracy at first. I'd tighten and/or replace the rings. I swapped the factory rings out for burris signature z rings and it helped a lot. I now have Talleys on it. As others have said find a type of ammo it likes and stick with that. I have one type of lead ammo my rifle likes and the have to shoot copper (barnes ttsx) cause in my part of Ca it's required to hunt. Fortunately my rifle loves the copper and it shoots better than any lead I've ever fed it.