Graves' AS scaling?

So, has anyone actually managed to find / figure out Graves' Attack Speed scaling math? The wiki says only this > Attack speed only slightly reduces reload time but more significantly reduces the delay between attacks.

which I'm pretty sure is more-or-less verbatim from his in-game tooltip, but doesn't so much clarify how his scaling actually plays out in game.

How long does it take him to unload once (fire his 2 shots) with 1.0AS? 1.5? 2.0? 2.5? His base 0.481? Reload at those same values? How many attacks does Graves actually get over, say a 10s period, at those same values?

I'd love to have a Red response to this, if it is possible (preferably of course from someone involved in the Graves changes).