I have been advised by several reloading buddies to stay away from the Dot powders-cannot remember why-but stuck with their advice.I don't know anyone who is currently using it.
Just thought I'd interject here...UziTalk noob, but I've been reloading just about every type of ammo you can imagine for over 30+ years (including Black Powder).
The problem with Red Dot in a 9mm case is that it doesn't necessarily meter well through a powder measure at that small amount (about 3.4 gr for 147 Gr plated bullet)....especially if you are running a progressive loader (which I assume most MG shooters do).
Red Dot is a great powder, don't get me wrong, I've used a lot myself, but I generally didn't load anything smaller than 45 ACP with it. When I used it, I always metered each load by hand.....it's just a powder that doesn't like to "flow" well through a volumetric measure.
My personal favorite now is Hodgen's Titegroup...one of the most versatile powders out there IMHO....I load it in all my pistol-calibers now. Vita Vouri is also an outstanding powder...but almost impossible to find down here....
Hope that helps......but again, just my humble opinion....reloading & Voodoo have a lot in common :evilgrin