Has anyone on here built a .375 Ruger on a Mausingfield action? I imagine it is too short for a 375 H & H. If so, which magazine did you use? I would ideally like a switch barrel .222, 30-06 and 375 on the same action using a floorplate magazine but I don't know how feasible this would be? I imagine you would need different magazine boxes, rather than just swapping the follower over?