Huvius - thank you for the explanation of the front ring relief on my W-R SSB action. It did,in fact,start life as a 318 Accellerated Express and is so marked. It is a nice action but it was either modified because Mauser would not change it or it was more cost effective for W-R to do it. In any case it would not function correctly as built for that particular use. This is just a fact of life not a design flaw or anything else. Actually never having handled a Magnum Mauser action that I can remember I cannot comment on their possibility for use with this cartridge.
I think Mausers are fine actions and have several and have built many rifles on them over the years. My preferred action has always been and probably always will be a Model 70. As to the comments about hunting in Africa, I have been several times and in most cases I wore jeans and either a ball cap or army fatigue hat. I sometimes practiced the 'African' carry but on most occaisons I actually used that good old product - A sling - even on double rifles. As to Courtney boots,I must admit to having many pairs of all styles as I find them to be exceedingly comfortable to wear. I actually prefer the American style of rifle and stock over the European and especially the British design with the aborted forearm. I also prefer to have them built by American gunsmiths who I believe to be the equal to any on Earth. Of course part of these likes and dislikes could possibly be traced to the fact I was trained in an American gunsmithing school by Americans instructors. Everyone is ,of course, entitled to their own likes and dislikes and opinions even though they differ from mine. Ocaisonally they might even be right on a point or two. In fact I can remember once I changed my mind about something but on further thought changed it back.