Roskoe, I seen the same thing on my 300Weatherby also. It seems to me, (not sure), anything that eats more than 80gr of powder velocity spreads increase alot. I hear alot of poster on other sights saying 7828 is the way to go. I just can't achieve my desired velocity with that. Anyway it goes, its a fun gun that I have killed moose with. Now, the gun is so heavy its not desirable for me to take on a Newfoundland trip. So I just shoot it for target now.

Now I have seen extreamly low spreads from 300WSM.