hey all, so the first rifle I've ever owned is a Remington 597 in .22LR. at first it's been good to me, shooting 1-1.5 inch groups after the first 300 rounds or so. now, 5 years and about maybe 6,000 rounds later, the groups are starting to diverge for obvious reasons. the rifle is all stock, but does have a nice piece of glass on it. any ideas on how to breath some life back into this gun? stocks, barrels, trigger upgrades, anything that would help. cost is immaterial. thanks.