I discuss about it before, but no one seem to care, so I'll try 1 more time in a more formal manner...
The DMG reduction feature supposed to cut bullet dmg by half over 1 screen range (except for 1-shot weapon).
BUG: Bullet actually have dmg halved within a screen range; easily reproducible by shooting people (the easiest way is using the dummy bot) at more than about 85-90% of your maximum range (~40-42 metre away), it will take double amount of hit to kill the target despite the fact that you could see the target within your screen.
Please fix it, thanks.