Disappearing ammo

Platform: Ps4(standard)
Ammo tends to poof. Had up to 400 rounds. Fired a few and then i had 100.
Steps To Reproduce: Cant really say. How it just does. I believe when ammo goes above 400 

Images / Videos:

Host or Client:
I was host but my friend whom was client was reporting same issue
Players in your game:
2
Specifications: standard ps4

Yep have the same issue posted in another topic. Very frustrating. Espeacially in a firefight.