 Although the C/64 had outclassed its French rivals during the war its breech was weak and there was a tendency for barrels to burst due to premature detonation of shells.The new gun designated the C/79 would retain the same ammunition as the C/64 and was assigned to fortress and siege artillery regiments of the Army.During the Franco-Prussian war, large numbers of French bronze cannons were captured and this material was melted down and used to build the new 9 cm Kanone C/79 and the similar 12 cm Kanone C/80.