I've switched from 220g SMKs to the 208s.
In my gun they are EXTREMELY accurate & only have about a 5% loss of energy. Plus they are cheaper & I like to shoot.
I've settled on VV N110 but I'm sure other powders would work just as well.
Attached is a group out of mine @ 100 yards.
I have quite a few sub 1" MOA targets posted in my photo album on this web site.
http://www.quarterbore.net/forums/ph....php?photo=598