- Disable the inertial guard in case a shot has not been fired.
- Press the breech lever to disengage the breech lock from the loop on the frame.
- Move the lever back and to the right as far as it will go.
- Place the shell on the tray, disengage the tray lock, and move the tray to the cradle.
- Push the shell from the tray onto the guide and use the punch to ram the shell into the breech such that the driving band engages with the barrel rifling.
- Insert a propellant charge into the chamber.
- Close the breech and place the safety into the "fire" position."
Tuesday, 20 January 2015
D-25 Reload Angles
For some reason, many people are certain that the IS-2 had to set its gun to a specific angle in order to reload. Over the years, I've heard mostly that it had to be at zero degrees, although some people insist that it had to be fully elevated, or the opposite, fully depressed. The document describing a one piece shell for the D-25 explicitly states that it could be loaded at a great range of angles, and this is using a heavier, less convenient shell. In order to fully dispel the myth, I will provide the loading and firing procedures from the IS-2 manual. This is an early manual (so early that most of it is about the IS-1, errata for the IS-2 is only provided in the very last chapter), describing the screw-breech D-25.
"2. Loading, Aiming, and Firing
The D-25 gun has a separate charge, so it is important to ensure complete ramming of the shell. In order to load the gun, do the following:
As you can see, no requirement for a specific angle is given.