 The also-rare 8×64mm S cartridge offers a comparable rechambering option for Mauser Gewehr 98 and Karabiner 98k rifles sporting 8 mm S-bores.Due to its larger case capacity the 8×64mm S chambering offers better ballistic performance than the 8×60mm S. In such military M98 bolt actions the magazine boxes, however, have to be adapted by a competent gunsmith to function properly with the 8×64mm S cartridge.Handloaders can also produce this round, by altering a .30-06 Springfield case and using a standard 8 mm bullet.