+1, Bulletstuffer. 4064 has long been a favorite of mine, after I experimented with some published loads and found it to work best with 180 grain Winchester Powerpoints in my Model 70. I no longer have the gun, but have over 1000 Powerpoints. I gave that rifle to my nephew-in-law, to keep in the family. Guess I'll have to kick his butt if he (a non handloader) buys factory ammo for it. I like to stick with parameters for powders that are published in loading manuals, too. Somewhere between high and low there's usually a safe, accurate, and effective load to be found.