33 damage weapons are a lie - bugged?

How come neither the Assault Rifles, Carbine, or LMGs with 33 damage does what it says it does? When I go to the firing range they only do 27 damage at the shortest range (10 meters.) All the ones that list 25 damage actually do 25 damage. This issue wasn't there in the beta. It has to be a bug right? There's no reason to use them over the 25 damage weapons when they kill in equally many shots and have higher recoil and lower fire rate. The 2 extra damage makes no difference in practice.

Regardless of whether all displayed stats are supposed to be entirely accurate, when it says 33 damage, it's conveying that it kills in one shot less than one that does 25 damage. The thing it's trying to communicate is simply false.

I can't believe I did such a ridiculous grind to complete an assignment for a weapon that doesn't work properly!