@pc3
HS uses Mauser 98 commercial bases (sometimes referred to as FN). Part nos for the Leupold bases are
50055 Gloss
50056 Matte
Sadly discontinued now ;-(
with a bit of hunting you might find some.
Leupold® steel Quick Release (QR™) rings and bases make it easy to remove your optic from your firearm and replace it, all while maintaining zero (+/- ¼ MOA). This specific model is for a Mauser FN and are a popular choice for muzzle loaders and large caliber rifles.
www.leupold.com
will be cheaper than Hexalocks
As an aside - did you happen to buy your .30-06 used from Mansfield H &F?