Alliant 4000mr for 300wm ?

[backyardsniper]

I have a new 300wm inbound from my smith and I'm getting ready to start sourcing components. Has anyone tried this stuff and gotten any Data on it. I have a pretty good supply of H4831sc. I'm looking to run the berger 230otm or the new nosler custom comp 220 if it ever actually hits the market