After a muzzle brake failure I decided it was going to shoot the rifle anymore except for one five shot group at 100 yards. The recoil was so severe moving me back 8 to 10 in so I only fired three shots. I guess I'm a sissy boy.
Anyway, salmon river solutions in Idaho sent me a new brake. After I installed it since I fired 500 rounds I thought I would work up to pressure again. The rifle is 26-in barrel eight twist 338 Remington ultra Mag neck to 7 mm using 300 Remington ultramag brass to get that extra 100 thousands end neck length primers are Winchester large rifle magnum primers powder came from a paper keg from world war II containing h4831. The load start with 87.5 grains and went to 89.5 grains. Velocity went from 3,605 to 3,704 feet per second. With a tape measure, the group look like 5/8".
Anyway, salmon river solutions in Idaho sent me a new brake. After I installed it since I fired 500 rounds I thought I would work up to pressure again. The rifle is 26-in barrel eight twist 338 Remington ultra Mag neck to 7 mm using 300 Remington ultramag brass to get that extra 100 thousands end neck length primers are Winchester large rifle magnum primers powder came from a paper keg from world war II containing h4831. The load start with 87.5 grains and went to 89.5 grains. Velocity went from 3,605 to 3,704 feet per second. With a tape measure, the group look like 5/8".
