I agree with Kuduae, that's an ex-military M98 action, not a commercial action.

The .318 is one of my favourite cartridges, and I hunted a lot of critters with one for the best part of a decade. It was tough to get one of those 250-grain Woodleigh softs back as they normally just flew straight through whatever they were aimed at, big or small. The only one I managed to get back penetrated nearly the full length of a large warthog boar. I misjudged the angle as the pig was standing in some tall Zululand grass. The bullet hit him on the left rear leg and we recovered it behind the skull, perfectly expanded. I took the rifle to Zim once in the hope of shooting a buffalo with it, but we just couldn't get close enough.

The .318 really punches above its weight and is much closer to the 9,3x62 in performance than the .30-06.