Designation of canons as "schwer", why?

[schwarzermai]

Hello

did we ever clarify why some cannons were labeled as "schwer" (heavy)?

schwere 10 cm Kanone 18
schwere 10 cm Kanone 42
schwere 10,5 cm Kanone 35 (t)
schwere 10,5 cm Kanone 332 (f)
schwere 10,5 cm Kanone 335 (h)
schwere 10,7 cm Kanone 353 (r)
schwere 24 cm Kanone (t)

thanks Uwe

to add:

schwere Kanone 38 (formerly 21 cm Kanone 38)

Uwe

[schwarzermai]

Hello at all and thank you very much for your help.
I think we are on the rigtht way to unlock this mystery.

here some more samples

Uwe

24 cm Kanonen

[schwarzermai]

[Carl Schwamberger]

As I recall it had to do with the mobility of the cannon. A combination of how many horses or class of automotive vehicle to move the cannon, speed on and off road, and if practical to move a distance off road. This included the requirements for the ammunition cassions or auto ammunition transporters. However I don't have a reference at hand & may be misremembering.

[schwarzermai]

Hello Carl, thanks for your help too. Maybe someone will find sometimes a clear definition in a primary source, Uwe