I was shooting 43ngrns of Varget today w/ 175 gr SMKs, some at 44 gr. With 308 my experience has been to try to around 2,600 -2625 FPS...I get less recoil and can sill stay sonic to 1,000 yds...around 43.00 gr s in a 26” barrel will come in higher at 2650-75../The nice thing about 308 with Varget is it is usually Accurate regardless of how fast you push it or how much jump you use...easiest round to load for