Im going to take a stab at the .264 win mag. Ive reloaded for the 7mm rem mag and sold it. Im building a custom .264 on a mrc 1999 action with a stainless lilja 1x9(26"). Ive seen some really great loads and have tightened the selection. Im considering IMR 4831, 7828, RL 25, Retumbo. Id like to push the limit again with something new. Any loads w/velocities would be appretiated.