But what's the contest? Which of my 3 finalists--one load powered by A7 and two by A9--would win the contest to be my PD-carry load. (All loads shared the Hornady 155XTP, CCI300 primer, new Starline case, OAL 1.250 - 1.255", and 5.15" LW barrel.) Turns out that the highest-velocity loads was the most accurate--15.6g. A9. Velocity with screens centered at 10 feet was 1362FPS from 14 samples. The 'losers' had 15.4g. of A9 (= 1348FPS) and 12.4g. of A7 (= 1333FPS). Shot seven 5-shot groups of each of the three loads over 2 days; the winner produced groups about 0.2" smaller at 10 yards. Now I need to find some dark to shoot in to determine muzzleflash.