CM arty modeling

[Imp]

Following a post by DRG have startred this to see if anyone has a better way of modeling its effects.
No expert on as only looked briefly at in the past & obviosly diffrent types will vary slightly but how do you model its effect any better?
2 Types I think cluster which produces a cloud of hundreds of explosives. Smart munitions seek target & think level of airburst can be set as launched. Devastating to all in area including soft targets, large multidirectional shockwaves. The other type are really armour killers like the Bonus shell which fires 2 seekers at about 2000m above target area per shell. These probably have no effect whatsoever on other units in the area as it ignores them so perhaps HE kill of zero.
As regards area of effect clusters are nasty Bonus each penetrator scans an area of 32,000m square, over 3 hexes across in game terms, probably closer to 4 by time allow for slight dispersal. So one shell should target 2 armoured vehicles in that area, 3 shells slightly stagered a bit more area & 6 vehicles targeted.
Videos of test fires (Boffors I think) cleary show the penetrator firing at targets well off centre like 40 degrees /
So perhaps as said Gun fired should have no or very low HE kill component while rockets like MLRS stay as are but I have not looked at the subject thouroughly.