If you've been playing patch 4, or even the dev build, I will inform you that the values used in that patch for 5.45 are far below even the values I was using in this test version. So yes, this is the second time I've rebalanced 5.45.
With my new calculations the damage averages dependent on rifle barrel length and caliber amount to this.
5.56x45mm out of a 508 mm, (20") barrel averages around 0.81
5.45x39mm out of a 415mm, (16.3") barrel now averages around 0.71
7.62x39mm out of a 415mm, (16.3") barrel now averages around 0.63
Note: I've determined these values based upon multiplying the average damage of the multiple variable damage sets that each rifle does, with the average damage that the multiple damage sets that each caliber does. I don't know if this is how damage is actually calculated in SoC, and it is not entirely respective about how this system works. See, now these are averages, because Zone of Alienation's ballistics have variable damage, something which appears to also be present in AMK and even vanilla SoC.
In my understanding, variable damage works on multiplying one of the values under the weapon's hit_power, with one of the values under the caliber's k_hit variables, because many of the weapons have multiple hit power values, and they can differ significantly, and this goes for the weapon's bullets as well, there is the possibility of many different outcomes in respects to weapon damage. This is why I have modified each weapon's ballistics by changing the average, because each weapon will deviate from this average in the actual game, and appear to overperform/underperform at times due to a differing range of performance.
I've tested these changes so far and I'm impressed, Bandits in the garbage seem to go down about after 3 shots to the torso with an AK-74, some tended to take longer to bleed out, but 3 was generally enough.
One last thing, AP ammo in SoC generally is the same as FMJ except it does more damage. I'm changing AP performance dependent on caliber, and some, like 5.56x45's AP cartridge will probably do 20-30% less damage, but have a much higher k_pierce coefficient than FMJ. 5.45x39's AP load, on the other hand, will be roughly similar to the standard FMJ in respects to its damage.