300 RUM -Retumbo vs RL25

[clock]

Hi guys, I recently found this board and its been very informative.
Iam building a 300 RUM for longrange hunting, desiring that elusive pinpoint accuracy in a moderate weight rifle: Rem action and Shilen #5&1/2 barrel. I want to shoot 180 Sciroccos or 180 Accubonds. What is your experience with Retumbo or RL25, and has one worked better, thanks in advance, Ray

 

[expiper]

I have never used any Retumbo...but have used a bunch of Rx-25,,this cal uses a "LOT" of powder))...with good results...with a 180 gr sierra BT ...I used 97gr...MAX LOAD!!!!...it worked good ...lots of velocity and good accuracy...Roger