Blitzcrank grabs beyond range [Gameplay]

Couldn't get a screenshot since I wouldn't know how in a game.

Basically, Blitzcrank was grabbing me from what I would consider far beyond his max range. I play Blitz on a regular basis and have a good idea of his range. I would be more than two CM beyond his animation and I would get pulled towards him. I have no idea how to reproduce this but I've never seen this before. It was though he had an extra 1/3 of his range tacked on. This happened consistently during the game to me and the other champions on my team. Really frustrated to know you are safe and then get snatched from impossible distances.

His Items in order: Seraph's Embrace Zhonya's Hourglass Rhabadon's Deathcap Athene's Unholy Grail Void Staff Ionion Boots of Lucidity