It decelerates it, if that's what you mean, though the firing rate selection has a lot of effect there. The GAU-8 was initially
too precise, and had to be
destabilized to achieve a better projectile dispersion pattern. I know a video from the 80s of a hotel being sprayed with fire is convincing and all, but does that strike you as the kind of placement that would work in danger close runs, with friendlies 50m out or less? Updated targeting and optics clearly, which would have been on that hog in 2019. How do you explain the support from those on the ground? I don't think those youtube clips are saying what you think they do, not via data anyway. Maybe I missed the proof. Someone has a bit of a Pierre Sprey hang up, though the guy was a total prick, no argument there.
Regardless, you won't find me in the A-10 tank killer fan club. It's better at what it did in Afghanistan but even with it's flaws I'd prefer it over other platforms with nowhere near the loiter time, payload or low speed maneuverability. I don't find the A-10's survivability questionable at all. 20 were hit in Iraq, 6 lost, 14 damaged. Didn't one make it back missing a wing?
Super
duper Tucano