I ran the hornady 300's with harvester crush ribs over 65 grains of AA2015. About an inch and a half at 100 yds. Optimum is supposed to be 67-69 grains, so I'll see what happens as I work it up. The crush ribs loaded pretty easy with .458's. Recoil went from mild with .250's over 5744 to pretty sharp with the 300's over 2015.

If you love someone set them free
If they come back no one else liked them
Set them free again