Are Badger Ordnance Bases Marked With Taper

I have a McMillian Tactical that was given to me as a gift about fifteen years ago. I’ve got a new scope on the way as an upgrade and I’d like to get a Spuhr mount for it, but I don’t know if the current Badger Ordnance base is tapered or not, and I can’t find the paperwork for the rifle. Is it marked on the bottom? I didn’t want to pull it off if there wasn’t a way to tell.

By the way, anyone know off the top of their head what Spur ISMS will fit a Nightforce 50-25 X 56 F1 ATACR with a Badger base? I’m going to order one once I know if I have to get a new base as well.

Tapered as in MOA built into the base?

Just look at it. Is it thinner at the front than at the back?

I guess I didnt realize that the cant would be enough to notice with a MK18 eyeball since I only have mine to compare it to. I’ll give it a look.

In case it’s not detectable to your eyes, it should be measurable. I recently used a business card that I cut to match the length of something…in order to compare it to the length of something else. The same idea may be applicable here.