In 1972 I bought a Remington Model 700 BDL 22/250. I used that rifle for fox and coyotes in Iowa. I moved to Wyoming in 1979 and proceded to shoot coyotes, prairie dogs, ground squirrels and jack rabbits. I shot the head space out of the gun in 1988. I didn't have much money so I had a local gunsmith rechamber the original barrel. Afterwards the gun still shot 1 inch groups and I shot it this way until 2009 when the accuracy just went to heck. 3 or 4 inch groups at 100 yards. Nostaliga and the hope of going back to that original configuration that I used to just pound coyotes with I bought a new take off barrel on the net and had it put on my gun. It would maybe shoot 2 1/2 inches at 100. I switched out the old Leupold 3-9 scope to a new Leupold 3.5 - 10x and it didn't improve. I made sure the new barrel was free floated then I had a local gunsmith glass the action. About this time the extractor broke and I finally found a gunsmith that could replace it. Then the magazine spring was so weak the rounds wouldn't feed always and I replaced that. Next the trigger went bad gun would fire when the safety was flipped no amount of gun smith help could give me a decent 3 lb trigger and safety so I replaced the original trigger with a Timney. However the accuracy still has not improved. 2 1/2 inches at 100 yards is about all it can do. I have made sure the mounts are tight and even replaced the bases. I bought new brass and attempted to work up a new load and experimented with bullets, primers, powder etc. The only thing I learned is it likes flat based bullets with SP points in the 55 gr weight. Don't even attempt to use lighter bullets. But accuracy on its best day is 1 1/2 inches at 100 yards. I know I should just buy a new rifle and be done with this. But that gun is kinda like a friend when I shoulder it. I put it in the safe and begin shooting a new AR that will shoot 3/4 MOA groups all day long at 100 yards. But it just doesn't feel the same on my shoulder and I sure don't hit coyotes like I used to my old rifle. I have been considering putting another barrel on the old rifle and use a different gunsmith to see if maybe its salvagable. Any other thoughts as to what I should do?