I tried RL26 in three different rifles 257 Roberts, 270 Winchester, and 7MM Remington mag.
It gave the highest velocities in all three rifles. But was not as accurate as some other powders in
all the rifles. RL17, Norma MRP, RL22 were more accurate in 257 Roberts with heavy bullets.
Norma MRP was the most accurate in the 270 Win, RL26 was more or less tied with several other
powders for accuracy, Superformance, RL23, RL17. In the 7MM mag, Retumbo was the most
accurate, followed by MRP, H1000, and RL22.