I have a 9.5 inch SRH that loves the 429421 (#2 alloy) and 10.5 grains of Unique for an estimated 975 fps. This is a very accurate load for me, YMMV. Unique is kind of unobtanium for the moment, but if you have any you are good to go. Accurate #9 at 18.0 grains is a mild load and is also very accurate. Good luck.