Re: 300 RUM loads
On my 300RUM I used a 20 MOA burris offset in the rear. With it, I'm able to zero at 550 and go out from there. As far as powder goes, I would use the Retumbo. That's what I'm running and it shoots very well. And also, for the application you are doing, the 220gr will suffice, or you could always go get some Accubonds.