Savage Model 12LRP but I suspect you could get a barrel chambered for it regardless of the gun maker.
Or just get a Savage action (or cannibalize one from a used rifle) and put anyone's Savage pre-fit on it.
But if you're looking for a factory rifle, you probably already know there are a few other chamberings in the 6.5 (.260, 6.5 x 55...) close enough ballistically that you'd never know the difference that might open up some other options.
07 FFL /Mosin-Nagant Custom Shop/Bent Bolts
Gun-Kote/ Cerakote Refinishing
Criterion Barrels/ Savage Re-Barreling