Here are some optics company addresses that might be worth keeping.
Nightforce USA Performance Optics
425 656-1577
www.nightforcescopes.com
Bushnell
913 752-3400
www.bushnell.com
Nikon, Inc.
631 547-4200
www.nikonusa.com
U.S. Optics
714 994-4901
www.usoptics.com
Warne Manufacturing Company
503 657-5590
www.warnescopemounts.com
Leupold and Stevens, Inc.
503 646-9171
www.leupold.com
Burris
970 356-1670
www.burrisoptics.com
H-S Precision, Inc.
605 341-3006
www.hsprecison.com
Pentax Corporation
303 799-8000
www.pentaxlightseeker.com
Weaver
229 227-9053
www.weaveroptics.com
Near Manufacturing
(306) 463-3484
Badger Ordnance
(816) 455-3704
www.badgerord.com
Moose,
Tactical style (Weaver/Picatinny - dovetails with cross-slots) one and two piece tapered bases are available. Near, Badger, Leupold and a few other companies sell one piece units. H-S and Nightforce sell two-piece bases of this type (Weaver/Picatinny).
Leupold sells a tapered one piece Redfield style base (turning dovetail and opposing bolts).
Suggest that you check the Optics section for more info on the Leupold, including order number.