My personal experience has been that RL17 performs well in my 300wizzum and in the 6.5x284 and 284win calibers.
Usually improved accuracy and able to match velocity of other powders with several less grains (ie:costs less per round).

In the 270win, got great accuracy with 130s, but with somewhat reduced load/velocity but still a deer destroyer with solid base noslers.
jmho
Tim

"The significant problems we face cannot be solved at the same level of thinking we were at when we created them."
Albert Einstein

At Khe Sanh a sign read "For those who fight for it, life has a flavor the protected never knew".