You have a hunting rifle,so first select the 150gr hunting bullet that you wish to use.I've found all of Nosler,Sierra,and Hornady 150gr bullets to be accurate and effective on deer.There is really very little to choose from among primers and cases as all commercially available types will perform acceptably,although magnum primers are recommended for ball powder loads in cold weather.Do not mix different brands of cases or primers when reloading a lot of ammunition.For greater accuracy cases should be trimmed to uniform length,primer pockets uniformed,flash holes deburred and cases segregated by weight.The .308 performs well with a wide range of powders.IMR 4895 and 4064 are excellent, as are H4895,Varget,BLC2 and W748-and there are others.Get a reloading manual or 2-Hornady,Nosler,Speer,Sierra,Lyman are all good.Start with minimum loads and work up observing pressure indicators and other cautions in the manuals.Do not exceed published maximum loads.Rifles are individuals and have a preference for particular propellants and bullets,so there is no universal best load for a particular cartridge.Having said that,IMR 4895 is a classic accuracy propellant for the .308 Win and I've found it to work well with a variety of bullets in a number of .308s.
