So it's completely apples to oranges, but I was just today testing some loads for my 10mm Glock 20. I was using the 200gr Montana Bullet works SWCGC bullets. I tested two charge weights each of HS6, Power Pistol and Blue Dot. The Blue dot loads were the winner in my pistol. One of my best friends (now deceased, damn cancer) swore by AA#9 in his 10mm glock. AA#9 and Blue dot are pretty slow powders - I'd tend to start there if I was you, as opposed to the faster numbers.
