in the late 1940s kvale designed a wildcat called 8mm kvale. it was intended for use in the german surplus 8mm mauser m98 that flooded the american market after the war and was therefore nicknamed 'poor man's magnum'. kvale used the case from the .300 h&h magnum and reduced the rim diameter so it would fit the bolt of a mauser m98. the lessons learned from this cartridge were put into the .308 and .358 norma magnum.