Years ago I had a rifle built on a 1938 Waffenfabrik Mauser 98 action using the .284 Winchester cartridge necked up to .400 (.410") to duplicate the .400 Whelen/.405 Winchester ballistics in a rimless cartridge suitable for a short action which had enough shoulder to properly headspace. It worked beautifully, and I have since considered rebarrelling a Winchester 88 in the same caliber, to produce a really powerful and versatile lever action rifle. The project is still on the back burner, but I have however acquired a Model 88 with the requisite magazines in .284.