That Barnes bullet is the copper version of the Buffalo 285 gr. S.S.Bs. For many years, Buffalo used the regular Harvesters with this bullet. You want the package for 451-452 (black) ... get the short ones for sub-300 grain bulletsif two lengths are offered. I don't recommend the crushed ribs for 150 gr. (three pellet) loads with any bullet. For roughlyevery shooter that has success with that magnumcharge using the crushed ribs-- roughly two shooterswill not have any success.... reason-being is the partial thin composition.