Hope this link works:
http://id.glock.com/answer/question/view/id/135233
Its been a while since i was on that site, but heck I provided an answer! Yes I gave our forum a plug! ;D
QuoteWell I have been shooting 10mm since March 1990, and handload my own ammo of varying ballistic performance levels from mild to wild. But have been doing pull-downs of many commercial ammo studying what makes them fly. With the help of others, I have tested rounds from just about all of them, SwampFox, Underwood, Double Tap, Buffalo Bore, Georgia Arms and a host of others. You can learn what was found here; http://10mm-firearms.com/factory-ammo-pull-downs/
Stop by and look around, many 10mm enthusiast reside on the forum there. :)
Nice!