Originally Posted by alaska
Maybe someone with a factory loaded round will break it down and weight the charge in the Superperformance ammo using the 180 SST in the 300 Win Mag
Sorry, won't work. They blend the powder for the factory ammo differently. I'd use h1000, rl22, rl25 in a 300 win with a 180. Retumbo is a possibility but is compressed.