I've experimented with RL17 and get good speeds with it in my Winchester. But started getting pressure signs well below max. I get best accuracy with H4350 with both 180 and 165 gr bullets. If I back off on the RL-17 to about the same speeds as H4350 accuracy is better, but still not as good as H4350. At least in my gun.
I still get 2950 with 180's and a max load of 4350. It wasn't worth the extra 50-75 fps with RL-17. By the book I should have been about 130 fps faster with RL-17, but I didn't feel comfortable loading it that fast.
