115gr plated with 5.3~ was not the best accuracy ........
Bullseye, Red Dot, Green Dot and w231 shot tighter groups.
124gr plated with 4.9~ gr of HS6 was my minimum and the cases were very dirty and 5.0 shot better and the cases did clean up a little, at 931 fps in a 3" Kahr.
Seems like 1010 fps plus is needed in my 3 and 3.5 pistols to attain groups that are acceptable to me, with the HS6 powder with standard pistol primers.
Subsonic loads just do not work, for me with this powder. It might be that being a "Ball" type powder and low case volume that the primer/volume might come into the accuracy thing. A 72% case volume did do better than the lower amounts.
CFE was almost the same with the lower target loads in the accuracy department, while w231 even at a minimum charge did shot groups in UNDER 1" in my pistols.
HS6 is best at 95% or higher pressures in my pistols.
For light target loads I did best with 231 or Red Dot.