The difference between fixed and semi-fixed ammunition is that the latter allows the propellant charge to be adjusted.
12.
The Mark 3 was also a semi-fixed ammunition gun that was designed for use on cruisers and battleships.
13.
US / NATO 105 mm howitzers use semi-fixed ammunition, containing seven powder bags referred to as increments or charges.
14.
The guns fired fixed ammunition weighing; the guns could fire HE and HE incendiary rounds, as well as illumination shells.
15.
This system was adapted from that used for the fixed ammunition used in the " Le Hardi " class destroyers.
16.
The FH77A ( which uses semi-fixed ammunition ) could fire 4 rounds in 9 seconds, or 6 rounds in 25 seconds.
17.
Since this gun assembly fired semi-fixed ammunition, ( " pictured " ) each round was delivered to the guns in two pieces.
18.
It was intended for the gun to use a wedge lock and fixed ammunition, but the plans were changed already before the prototype was ordered.
19.
Fixed ammunition ( case and projectile handled as a single assembled unit ) with a charge of smokeless powder gave a projectile a velocity of.
20.
Modern turrets are often automatic in their operation, with no humans working inside them and only a small team passing fixed ammunition into the feed system.
