[GAMEPLAY] Jayce hammer auto in cannon range

Playing as Jayce, while in cannon form, if you mash Q, R, and auto, sometimes you'll auto at cannon range in hammer form. I find the best results come from R, mash Q repeatedly while right clicking a minion a bunch. A video is uploading, but at the time, here is a screen shot. Notice the yellow bolt hitting the minion.

Edit: Video is up. Forgive the stuttering. Edit 2: Don't need to even touch Q. Just mash R and Auto. It's pretty consistent.