My Remington 721 has a 30 inch Shilen barrel with 1 in 8 twist. It loves the lighter bullets. 72gr of H4831 pushes a sierra 100gr HP at 3689fps. For deer and smaller. 85gr sierra HP with 73gr H4831 at 3839fps for rock chucks. Have pushed the Woodleigh 160gr PPSN to 3269fps but pressure signs. Moose load.
