Sway while firing guns

[Riceball]

I posted this on the dev forum and thought it may be a good topic here:

Did the aircraft's attitude really change that much when firing the guns? If I was the designer of a fighter, that would be the #1 problem to solve. And if you watch enough gun camera footage they don't seem to sway side to side. If it looks that way, that's just the pilot working the rudder.

But, I've never spoken to a WW2 fighter pilot so I may be way off base.