Hodgdon Retumbo Smokeless Powderhodgdon retumbo powder is Available in 1 lb. and 8 lb. containers.This magnum, extruded powder was designed expressly for the really large overbored cartridges such as the 7mm Remington Ultra Magnum, 300 Remington bullseye powder Ultra Magnum, 30-378 Weatherby Magnum, etc. Retumbo adds 40-100 fps more velocity to the

Arm or Ally gives An array of AR-10 builder's sets, recognized for his or her excellence and adaptability in tailoring AR-ten rifles to accommodate personal preferences and needs.   Many of these sellers will most likely demand you for this and several may not.  We will have to Have a very duplicate of their FFL or their resellers permit. E mail