Description
300 Rum Brass For Sale – Ultra Mag Brass For Sale
50 factory new ADG unprimed 300 RUM (300 Remington Ultra Magnum) brass rifle cases, standard finish with the anneal line visible
Atlas Development Group (ADG) recommends reducing any existing charge weights by 10% and re-developing your specific load when replacing any component in a load recipe with a new component (brass, projectile, primer, or powder type). Failure to reduce charge weights established using other manufacturers brass may result in higher pressures and velocities while using ADG brass and may result in unsafe pressure levels.
