I have changed my .300 Weatherby load from MagPro to RL26 for temp stability and lost about 25 fps but groups with 168 gr TTSX s tightened up. It’s still at 3,300 fps with an under max book charge and shoots well under an inch at 100 yards as did the MagPro. There were no flies on the MP, just running low and bought a couple pounds of RL26. I haven’t tried it in other cartridges since it has become unobtainable. Happy Trails


Life Member NRA, RMEF, American Legion, MAGA. Not necessarily in that order.