While slower powders gave better load density & another 100-120 fps on average, nothing came close to the accuracy/consistency that Re-22 provided in 2 different .300 RUM rifles & with bullets ranging from 150-180 grains. Fed 215 Magnum primers were used.

With 180 grain bullets mine likes RL 25 the best;but running a real close second is IMR 7828.With 200 grain Nosler Accubonds the RL 25 did however tend to shoot quite a bit better groups then the IMR 7828.I haven't had a chance to try Retumbo yet,but it is gonna be next.Papershredder