 They have used this cartridge extensively to create powerful loads by handloading.Whilst staying within the 440 MPa C.I.P.limit an 8×68mm S rifle with a 650 mm (25.59 in) long barrel and appropriate modern gun propellants (Vihtavuori N560) can be handloaded to propel a 12.96 gram (200 gr) 8 mm bullet like the Sierra MatchKing to a muzzle velocity of 927 m/s (3042 ft/s).