What kind of up-take has the Kreighoff 500-416 seen? Surely a good cartridge as well, although the Rigby name is more romantically synonymous with the .416. In any event, I do hope that this cartridge actually gets some traction, but I’d hazard a guess that it, like most newly introduced big bore cartridges will have to really fight for relevance. The big bore market is extremely tiny comparatively speaking to the overall shooting sports market. This fact of low volume economics will make it VERY difficult for newcomers to encroach on an already very small market where even old established players are not easily available at the corner sporting goods store.