FWIW...I have found a good load with the 2231s in my rifle. Bartlien 9.5-9:1 gain twist. Saami chamber. Bullets seated .040" off . 45.8 gr Varget in Starline srp cases. Br4 primer. 30" barrel giving MV of 2681fps. Testing so far gives .250 moa ten shot group @300yds.