I started using 760 as a kid in my 22-250 for prarie dogs, so when I had my first Creedmoor built, I tried it as well as with RL-17. I was looking to "hot rod" the cartridge. When I was breaking the new barrel in with the Scenars, I loaded some up with 760, 780, and 17 just to see which gave good velocity and some accuracy promise.
The first 3 shots out of the gun with 41 grains of 760 went into the same hole.
I've since changed over to H-4350 as it seems to give a bit better accuracy, but with the 760 and the load developed via Audette sure shot well.
The H-4350 I'm using now is the slowest 4350 ever made. Didn't hit pressure til 45 grains. Load is 43.6 for accuracy. Getting great velocity up close to 2900 with the 140's. Knowing this makes me think that a powder with a burn rate slightly slower than H-4350 (normally) would be just the ticket for the Creedmoor.
