Re: .223 and Varget....?
Varget is my "go to" powder for .223 & .308 bolt guns.
For the .223, 26.5 gr. under a Hornady 52 gr. HPBT in Rem. brass works well in my M700 VSF (0.5 MOA).
For the .308, 44.0 gr. under a Nosler J4-168 in LC-90 match brass does fine in the M700 VSSF (0.625 MOA).