I've seen what appear to be odd values for Kalibr assigned to the projectiles of some guns in the Weapons classes

I have news for you

These odd values come from a series of successive mistakes in the ballistic formulas used by the various programmers employed by Maddox/ 1C for the different successive version of this game - it appears that there was a succession of programmers, each trying to correct the mistakes of the former by using various factors (empirical, without rationale basis), but none of them understanding the ballistic formulas.

If only they had used systematically the same correcting factors - but for each batch of new guns introduced they used a different way of reaching what they though was the correct destructive effect to be obtained (the Soviet guns must of course be the best and after that the German - as part of Maddox team ideology)

For instance they took a formula from... Wikipedia, without understanding that it was a simplified formula and, worse, was a formula using parameters that were not International units (

the Ballistic coefficient in this formula is in Lb/sq in, but the programmers used international units (sq m and kg) for the other parameters....forgetting to introduce a conversion factor ........with the results one can expect.

Vasya at aviaskins has been doing quite a lot of work for getting more consistency and realism between the destructive effects of all the guns in the game, although he too uses an empirical method - looking at and comparing the effect of various guns at shooting at the same target in the game .