I haven't touched the value of the Kwk40/L43 but the 0.87 I find a little too much imo.I can kill JS-2s at 1250 metres.
This is possible. Depends on where the hit lands and the angle between the shell and armor.
It also can be like this:
More than 10 hits by 88 mm shells from multiple directions and only the driver is killed. The tank destroyed 3 Tigers, including player.
and the kwk43 the original value when the Tiger 1.0 mod came out was 0.97 which is what I have left it at.
This is a little too much as the recent tests revealed.
The JS-2 I have at 1.10 otherwise with the default value of 0.97 it takes me sometimes 3 shots to kill a Panzer IVH?
Then maybe you didn't shoot well at Panzer IVH?
Here's tiger 2 turret front, penetrated from 900 m and Panther front hull, penetrated from 1100 m. Value is 0.97.