I wouldn't use Talley ringmounts myself. I had them crack. But if you are wanting to keep them, here are some thoughts.
- How are you measuring torque? Sure you are getting a valid reading?
- Either way, try taking the small L-shaped key included with the rings, and hold the short end and see if you can snug the fasteners. Once that's done, I usually flip the key around and snug a tiny bit more but choke up on it.
I've used #2 above on literally dozens of scopes and rifles. No slippage or anything weird. As long as you use that short end you are unlikely to damage anything.
Be careful cranking away if you don't know the quality of the torque tool!
Good luck