I don't know about Talley, I would suggest you phone them.

However, for what it's worth:
EGW suggests 20 inch pounds to attach their rails to the receiver (I know, that's an answer to a question you didn't ask).

For their Signature Zee rings, a Burris CSR told me on 7/18/2012 that they suggest 30 inch pounds for their ring to base cross screws (I replace the slotted ones with allen head ones) and 20 inch pounds for the ring top screws. That's what I use and it seems mighty tight...I'm always afraid I'm about to strip the screws...but never seem to. You could probably lower that to something between 15 and 20, but 20 is what the factory rep told me.

I don't know if it would be different with a non-insert type ring. I presume you would want it tight enough to hold the scope and no more. In the past, I have been known to use one layer of electrical tape to help hold the scope without marring when using non-Signature Zee rings.

If you are using anything other than Signature Zee rings, I would kindly suggest you align and lap your rings to keep from marring or torquing the scope tube.