I owned a ss Mark in 300 why back in the late nineties. It was the fluted barrel model that Weatherby made for a short time. Gun was extremely accurate, I didn't bother hand loading for it because hand loads could not have possibly shot better in that rifle, Only objection was recoil. Now I fast forward to this last spring, my younger brother bought a Vanguard deluxe in 300 bee NIB. I figured the SOB would kick like a mule and lo and behold with factory wby 180 grain partitions it was a pleasure to shoot and very accurate.