While performance is always a goal of reloaders, trying to beat (considerably) the velocity of factory loads is a futile exercise filled with the promise of future trouble. It's just not worth it.....even if you succeed in beating factory velocities by 150'/sec there still isn't any game animal in the world that will notice. Further doing so can be a very difficult task.....if you really need that additional velocity trade the gun for a .30-06 or a .300 Mag.....you have a very fine gun in a .308.....enjoy it "as is"!!!