My game is 1000 yard Benchrest, but I've also had 4 or 5 700's and an XP-100 built, just for pleasure. For a little background, I won the 1K three gun championship six years in a row in Pella, Ia, so I'm more than a internet jockey.
While I've tried 17 in 2 or 3 other calibers, I found it didn't give any appreciable velocity gains, and was too inconsistent in accuracy from day to day. I have tried around 10 different powders for the 6.5-284, but not 17. At this point, I probably won't.
I'll take H-4831SC all day, every day in a 6.5-284.
