In my NULA .308, I use the 150 TTSX BT and 44 grs. H4895. Muzzle velocity just over 2800 fps. Very accurate and an excellent elk load. I've also tried R15, 748, and Varget in my rifle. H4895 has been the most accurate. I use a CCI-200 primer and Remington or Winchester brass. I've also used the 168 TSX (not TTSX) and 43 grs. H4895, another very accurate elk load; MV = 2700.