I use the 150 gr ttsx in my .308. It is loaded with 44 grains of IMR 4895. I cannot give you any velocity or ballistic particulars on the load, but it is a very accurate load in my rifle. I have used the 150 grain ttsx bullets in my 308 on whitetail, hogs, elk, red stag, wildebeest, gemsbok, leopard, waterbuck, zebra, bushbuck, and impala. Red stag and wildebeest being the only animals that were given a follow up shot.