Appropriate artillery for Russian Battalion?

[Mobryan]

Calling Chuckfourth,PanzerBob, et.al.
I'm curious what artillery would normally be assigned to a Russian battalion level formation.

My current core force:
1 KV-1 company
1 Marine company
1 Partisan company
1 T-34 platoon
1 platoon of scouts
1 battery 57mm AT guns
1 battery 37mm AA guns
1 battery 107mm mortars
1 battery 152mm offboard guns
1 battery 122mm offboard guns
Plus a few odds and ends for logistics.

What would have been historical for a formation this size? I ask becasue my last battle was a meeting engagement with a German Kampfgruppe, 6/1941. It was an eerily perfect twin to my force, but they had a noticable advantage in artillery numbers. It was odd, I'm the Red Army, I'm not supposed to be outgunned!!! Or am I?

Thanks,


Matt