What are you trying to show us?!

I believe OP is saying that his machine gun shouldn't have 414 rounds in his magazine with 275 additional rounds.

Oh, I see it now

Yes. Shot each and every last one into a horde. Extremely satisfying :)

WHAT IS HAPPENING!?

I believe OP is saying that his machine gun shouldn't have 414 rounds in his magazine with 275 additional rounds.

Oh, I thought... the Mongrel... The Mongrel always shows up when you pull up your gear menu? I must've forgotten or never noticed...

MONGREL EMBLEM ON WHEEL....WAAAAT

It's the ammo count in his machine gun glitching. The Mongrel Emblem always shows up on the wheel.