JD,
The idea is not to have a switch barrel rifle, but to have a practice rifle that I can shoot a lot and not have to send away for re-barrels (just order one up and install it in my gun-room). I have a Savage in 308 that I am doing this with now, but I want a 300 mag also. I like the 110 action, but think it would be nice to use a Win. because it would match my other 300, and the fixed recoil lug is nice.
I measured a M70 barrel thread, and it is 1". So it looks like this could be done! (decisions...decisions)
Thanks again, Doug