Re: Anyone Tried Alliant's New Higher Velocity RL17 Powder Yet?
New rifle, FN SPR action on a A3. Barrel has a .338 neck
Just started loading for it and only powder I've used so far.
I'm also a grain below the manufactures recommendation for 180's.
"300 WSM 180 gr BTSP Fed Fed 215 2.800 66.0 3082"
I've taken it two grains higher to get over 3,100, my ES was all over the place.
This seems to be the sweet spot for this rifle and I'm happy with that.