Since you already have some 4895, I'd stick with reducing that until you get the velocity you choose. Don't go below book data with H414/Win760.
Its the ONLY powder ive ever had a hangfire with in my life.
I'm new here and know nothing about benchrest but I like to learn. I had no idea that a 10-22 action was the top choice!
Now I gotta buy a stock one just because of that.