Actually, in the late 90's you could get the CFP in the .308. You can still find these sometimes on the used market, including some NIB.
I've got one of these and it's great, but could be even better. With the recoil reduction offered by the Accubrake and using a Magnum receiver, there's no reason not to to up the CFP horsepower to the 270, 7mm or even 300 Magnum with Accubrakes standard on the Magnums. I think the 270 or 7mm would really redefine pistol performance.