Surprisingly my best loads were with Varget & CFE 223 behind the Hornady 53 gr. V-Max & the Hornady 60 gr. FBHP. Only slightly worse was Hornady's 75 gr. BTHP & Hornady's 68 gr. BTHP & IMR 4350 powder. I did nearly as well with H414 behind the 68 & 75 grain bullets.