User blog comment:Nuclrdmntr/Hexragon, The Hextech Gunner/@comment-4949668-20121105033802/@comment-5263329-20121105035809

It's 6 seconds at lvl 1, each of the lower cooldowns are gained at the normal ultimate levels e.g. 5 seconds at lvl 6. I'm probably going to change the cooldown to make it lower though e.g. 5, 4, 3, 2 seconds.