I shoot 600/1000 yard F-Class matches. I use a custom Savage with a 30" heavy barrel in .260 Ackley Improved. I use a 139gr Lapua Scenar BTHP bullet with 42gr H4350. This gets me 2860fps and is the most accurate velocity for this rifle/bullet. It uses 11.5 moa of elevation at 600 yards and 28 moa at 1000 yards.
My next project is to screw on a 28" barrel chambered in 7WSM and run the 175gr Sierra MatchKings.