Their rate of fire was theoretically 10 rounds per minute, but in practice it was limited to 7.5 shots per minute. Muzzle velocity was , though with the C/07 shells introduced in 1907, this increased to . During their modernization, another pair of guns was added and ammunition storage increased from 600 rounds to 1,184 shells, which were a mixture of armor piercing and high explosive (HE) rounds.
The gun's firing rate was theoretically 10 rounds per minute, but in reality it was capped at 7.5 shots per minute. The barrel velocity was , although the C/07 shells introduced in 1907 boosted this to . As part of their upgrade, another pair of guns was added and ammunition storage increased from 600 rounds to 1,184 shells, which included both armor-piercing and high-explosive (HE) rounds.