I always wanted a 6mm-06 however instead of simply that, I figured a beltless .240 would be better as I would have cheap cases, dies and data. As in have the chamber cut for the .240 W/O the belt and have at it (I got a Mod. 70 Classic Sporter 25-06 instead). The other one is a .400+- on the .240 Wby case so that it would be straight and headspace on the belt, sorta .400 belted Whelan/mini .458. Muddy