[Marcello]

Originally Posted by DRG

Maxim

I need documentation on the use of SU-122's as SP-arty. The SPR OOB uses them that way from 1946- 1969. I'm quite happy to add them to the official OOB in that capacity with some further information
Don

Do you mean SU-122s specifically or even JSU-122s?

The latter at least were used for such missions.
http://www.battlefield.ru/content/view/40/45/lang,en/

Time to time, JSU's used for artillery missions because they were able for both direct and indirect fire. In particular, during the Sandomir-Silesia offensive operation, the 368th Guards OTSAP of the 1st Ukrainian Front was assigned for artillery mission and for 107 minutes the regiment fired 980 shells.

As a result, two German mortar batteries were destroyed as well as other 8 German guns, about one German infantry battalion was wiped out. Interesting to note, that additional rounds were placed at the vehicles, but anyway, JSU's used their "internal" ammunition first. Otherwise, rate of fire become slower because it takes up to 40 minutes to load 20 rounds into the vehicle.