^^^ Same here, my three Vanguards and my Browning all have Talley Lightweights (well one of the Wby's has the Wby "branded" Talley's and same with the Browning - Browning branded, but made by Talley).
While most of the mounts listed for the Rem 700 also list the Wby/Howa 1500's as the same mount, Talley in lightweights, one pieces and two piece bases have different part numbers. Don't know if that's simply for their own purpose or because there is some minuscule difference that they are the only company that bothers to take into consideration.
I love the lightweight (ring/base in one) - figure that is one less thing to come loose, get knocked etc.