I am loading for a friends new Remington 300 RUM. HS precision stock, trigger down to 2.5#, Leupold vx2 6-18, Target, Matte. Leupold base and rings. I have used H-1000 for all my loads in my own .300 RUM but thought of trying Retumbo. Now I have the oppurtunity so what works? I know theres a couple people out there that have some pet loads with Retumbo and the 200g Accubond. I am going to finish breaking in his barrel, then start loading up some test rounds. Looking for 1/2"- 3/4" 3100-3200fps.