Who makes and where can I buy a tapered scope base for a Mark V Weatherby in 30-378 cal? Already have a Leupold Vari-XIII 6.5-20x50 side focus L.R. 3/4 mil dot scope and have ordered extra high 30mm Signature Zee rings. I have a Baer base on my Rem 7mm/300 Wby but don't know if the same base will fit the Weatherby rifle. As a side note I'm leaving Thur for Cammeron Co Pa with hopes to shoot my first deer at long range with the 7mm/300. Thanks in advance for any help.