 The development goal of this cartridge was to get a highly reliable .30-calibre magnum cartridge that fits in the standard Mauser 98 action without any modification of the feeding lips, follower, feeding ramp or magazine length.Only the bolt face must be opened to a diameter of 13.3 mm (0.524 in).The throat of the .300 Styria Magnum is similar to the proven .308 Winchester and short enough to seat the bullets to the lands without exceeding the maximum length of 84.8 mm (3.339 in) to fit the original Mauser 98 magazine.