Picked up a used handi rifle in 35 whelen, the bore is pitted the length of the barrel but very bright.Cleaned it very well when I received the rifle and went to the range.Shot my reloads very nice at 100 yards( sub 2 inch) but when I shot factory both 200 and 250 grs it did not hit the paper. Went back to reloads and shot the sub 2 inch.Came home and cleaned the rifle, the bore did not show signs of being overly fouled, it cleaned very easy.I am shooting 250 gr hornadys behind 50grs of varget.All screws on the mount and scope rings are tight. Any clues.