I got my best results with 27.5 grs of Varget and a 40 gr Berger.It turns about 3600 out of my Savage 12's 25" barrel.Best 5 shot groups are in the .3 range.I went as high as 29 grs,velocity was a tick over 3900 fps,but the groups opened up to about an inch.I've tried several other powders,but none did as good as Varget,both for accuracy and velocity.I have noticed that a good cleaning after 20 shots or so helps keep the groups small,but even when pretty dirty,it shoots well under MOA with this load.HTH