Most Armor In Game

Okay My Friend and I were talking about how you cant reach 100% dmg reduction thru armor. We went on and on about the most possible way to reach it. So I did some math to figure it out, I am trying to test it in game. I need 9 others to do it. But it pretty much goes like this.

Player1: Rammus lvl 18 Items Thornmails or Frozen Hearts x6 = 600 Armor Runes Armor per lvl = 62 Masteries = 25 + 5% Now for your team you need Morde Galio Raka and Taric. Tarics W gives you 12% of his armor, and with same build as above = 134.3 Galios W gives you a flat 90 armor Mordes W gives your 30 flat armor Rakas w Gives you 110 flat armor +15% more for ap With Raka Having 6 Deathcaps and all the right runes, masteries, and items her total ap is = 1208 AP With that in mind 15% of that is = 181 Armor Giving Rammus with His w turned on a Grand total of 1492 Armor With his Passive giving 25% armor into flat Attack dmg he ends up having a bonus of 373 AD If Anyone can do this in game pleas let me know and send me a video or a screen shot Thanks a lot