checked the data when I did that (last week I think) and I had shot 5 shot groups with 22.5 grains of 4166. Dies were set to use the cannelure as I intend to just load these for a AR load. Did not write down an OAL but did make a dummy round so I could duplicate it set the dies back up. At 23.0 grains the group opened up but no pressure signs still. This is the first time I have used one of the Enduron powders. Going to improve the trigger on this gun and maybe more magnification scope as this was shot with a 4 power setting( 1 to 4 variable I had thrown on it after assembly). Might improve things a bit and shows promise .
