I believe its a multiplier based on distance (not 100% sure). Someone more talented can answer I'm sure
The Ostheer mortar has always hit what I was shooting at, I much prefer it to the 82mm. For comparison, the Ostheer mortar is slightly more accurate than the 120mm.
120:
Scatter Angle: 10
Distance Ratio: .1
Reload (Max & Min): 8.9
The barrage on the 120 is pretty fast and accurate, but that's the 120's barrage's feature.
Name:
HM_38 120mm Mortar Barrage
File name:
hm_38_120mm_mortar_barrage_mp.xml
Nation:
soviet
Potential dps:
9.711684370257966
Penetration:
35.0/35.0/35.0
Scatter angle:
8.0
Scatter distance:
8.0
AoE radius:
6.0
AoE far:
4.5
AoE mid:
3.5
AoE near:
1.1
Considering they have the best sniper and HMG, I wouldn't mind an Ostheer mortar Nerf.
I would rather see Allies be given more and better options than taking all of Ostheers toys away. And you need to remember that your not going to be making a Sniper, MG42 and Ostheer mortar in rapid succession due to MP costs.