Finally revisited this powder after having some issues with ejection issues last go round that turned out to be die related. Well with R-P brass, 120 NBT's, and 47.5 and 48.5 grains...both below book max... I got .87 group with 47.5 and .81 with 48.5. Thats decent but the velocity was right impressive... 2930 avg with 47.5 and 3005 avg with the 48.5. Pretty impressive for a 20 inch barrel. These loads were shot in 40 degree weather so not much worry about the temp sensitivity this go round. I think Im gonna like this stuff.