Thanks for the attached files Jim.
Unfortunately, I didn't find anything that answered my questions though.
There were some parts I found very interesting however:
"Adjust/correct weight and performance of a few ammunition types at the weapon level - mostly not present in the scenario, but done for consistency.
Replace all ammunition type quantities and weights in according with values found in ARTO(?) and US and German sources. Some become significantly lighter (especially low performance ammunition), some much heavier, and generally US packaging is heavier than German for similar ammunition (though some German natures are heavier due to higher velocity and larger case sizes).
For all NW weapons, replace warhead weight with the payload/warhead weight, rather than 'launch weight' - these weights are appropriate for packaged weight though, as they were shipped in open lattice cages of minimal weight.
There is an unresolved question about bombardment effectiveness - once I understand this a bit better (accuracy does what exactly? does it alter the impact location, or only casualties caused?) In this latter case, I'd be tempted to adjust accuracy to a maximum of 50%, possibly reducing it for very long or very short ranges - or adjusting bursting radius and accuracy to a 'higher lethality standard' for larger rounds, which might permit a closer range for danger-close when firing deliberately with these larger rounds than currently while retaining their higher lethality*, and simultaneously increasing the 'slop' in rapid fires of lighter guns without increasing lethality.
*The Finns used to 'plink' with their 21cm weapons, targeting a single 'hard-target' eg bunker with a handful of rounds fired for 'destruction' - with a wide dispersion, and 'normal' accuracy, this is/would be ineffective in game."
My questions still remain unanswered I'm afraid:
What effect does a heavier weight of shell have on entrenchment, if any?
I am assuming entrenchment would have overhead cover, so VT and MT fused salvos (used against dug in positions and troops in the open on soft terrain) would have little effect.
PD (point detonating) was a standard setting for use on most terrain but was less effective than fuses set to delay, which not only allows the round to penetrate a bunker before exploding, in the case of a direct hit, but also had the effect of collapsing the walls and roof structures of entrenched positions with near misses.
I mention this because the same weight of lighter calibre rounds, set to delay, might have more impact on a dispersed position than a few very large calibre rounds as there is more chance of them finding a target.
The more I think about it, the more variables I find, making me wonder if just an arbitrary figure to cover all situations is the better option anyway lol
I'm going to drop the question about heavier weight shells drawing more supply, as well, because I imagine to cover the same burst radius, with lighter munitions, would require close to the same weight of resupply, as you would be firing more of them, for the same effect.
Just a guess, I have done no research on it.