In the most recent update the penetration distances were changed from 10m, 100m, 500m, 1000m, 1500m, and 2000m, to 100m, 1000m, 2000m, 3000m, 4000m, and 5000m.
This is the Bt-5s APHE statcard for example.
What was the reasoning behind these changes? It isn’t possible to fight a tank from 5km away on any map.
Just completely guessing, but probably to be more friendly to newer players who just only pay attention to the top left, by giving them a slightly more realistic number when they still only look at the top left. that wouldn’t explain removing the useful 500m though.
It’s the same for .30 cal machine guns - lol.