has anyone ever heard of this combination? I know they have the 6.5-.300WSM. I am looking for a round to rechamber a rifle for antelope and this seems like a great idea. anyone know where I might find info?

PO Ackley's book it's called a 6.5 Mashburn Super

FYI I use a 7 Mashburn Super (300 win down to 7)

I'm on my third tube for the round-just love it. I have a new reamer ordered let me know if you want to use it. (the 7 MS that is)

"GET TO THE HILL"

Dog

I've also seen this combination (7mm-300 Win) called a 7mm Yukon. I gent I know west of here uses one for mulies. Pretty much a 7 STW short (medium?), but the rifle shoots very well. I think a 6.5 on this would be an interesting rifle. - Dan

I have one on a P14 action. As soon as the stock is finished I'll start some load develoment.
RR