Perusing my old Hodgdon Manual, a 24" 7mm Wby gets 3,022 with 74.7 of H1000 under a 175 Hdy SP @ 54,000 CUP. It's their only load that breaks 3,000 fps.

My bet is the Mashburn will break 3,000 easier with more than one powder.

All this is splitting hairs and I can see the arguments for either/or.

But to disregard what the Wby Freebore is accomplishing is a bit silly.

“Perfection is Achieved Not When There Is Nothing More to Add, But When There Is Nothing Left to Take Away” Antoine de Saint-Exupery