Am I the only one who thinks they're missing something great by not offering this?
The 450 marlin fits in the same guns that the 300 WSM will (namely the AR-10 when rebarreled) and has the same base as it and the 350 Rem Mag. I've tended to think the 450 Marlin should be considered a short magnum, but its use in a lever gun lean us away from that impression. It even has a belted case.
This is the Rem 673, offered in 300 WSM and 350 Rem Mag. Wouldn't it be just perfect to do it in 450 Marlin?