Hmm. Maybe I need to look over data for Alliant 2400 and L'il Gun then since I have them as well. One of them should get me there. The GDHP-SB works well at 1,000 FPS which HS-6 and Power Pistol and AA#5 can all deliver.. For my "woods load" 200gr XTP (and possibly the 240gr XTP) I know I need to use a slower burning powder such as 2400 and L'iL Gun, both of which will get it done. Two different loads with 2 different purposes, apples and oranges. My last workup with #2400 was 18.5/19.5gr with a CP 255gr LBT, which shot very well from this gun. I'll likely use it first for the 200gr and 240gr XTP. Hornady #8 lists lots of data for the 200gr XTP incidentally.