Upvote:10
This depends on many conditions (especially the type of gun), but I will outline a few of the main ones here.
Vickers Machine Gun (1912)
Rate of fire - 450-500 rounds/min.
Effective range - 2000 m
Maximum Range - 4100 m
Weight - 15-23 kg
Muzzle Velocity - 744 m/sec
MG 08 (adapted from 1884 Maxim Gun)
Rate of fire - 450-500 rounds/min.
Effective range - 2000 m
Maximum Range - 3500 m
Weight - Gun: 27 kg ; Tripod: 39 kg
Muzzle Velocity - 900 m/s
Lewis Gun (1911)
Rate of fire - 500-600 rounds/min.
Effective range - 800 m
Maximum Range - 3200 m
Weight - 13 kg
Muzzle Velocity - 740 m/s
M1919 Browning machine gun (1919)
Rate of fire - 500-600 rounds/min.
Effective range - 1400 m
Maximum Range - 3700 m
Weight - 14 kg
Muzzle Velocity - 850 m/s
M1917 Browning machine gun (1917)
Rate of fire - 450 rounds/min. (post-WW1 model got 600 rounds/min.)
Effective range - 1370 m
Maximum Range - 3200 - 5000 m depending on the type of bullet
Weight - 47 kg
Muzzle Velocity - 854 m/s
So, an average rate of fire would be around 500 rounds per minute. Most guns were recoil operated (some had an additional gas recoil). They would be fairly accurate at 100 meters given their maximum effective ranges were mostly between 1000 and 2000 meters. They could be carried by person, but the tripods were as heavy as (if not heavier than) the gun itself. for this reason, the gun and the tripod were usually carried separately.