Re: A 191
I've tried RL17 under the 230 Bergers and got some astounding results. I seem to recall 65.5 grains of RL17 gave me 2850fps and 3/4moa accuracy. Granted I did not play with seating depth to maximize the group size as I think that would have made huge differences.
Since I use the 208's for 300 BlkOut, 308, 30-06, it made sense to use them in the 300WM, especially considering it gives me solid 1/2moa accuracy to 1k at 3060fps using 68.5grains in FC Brass.
I use RL17 in my 243, 308, 30-06, and 300WM with phenomenal results. Soon to try it in a friends 260 under some 142SMK's and see how well it does there.