Yeah, Meat did 405x6 with straight arms. Swolle did 405x7 or 8 with, I think, crossed arms. I forget exactly and his vid isn't embedded anymore.
Meat said he did up to 500 or so in training, but the challenge was max reps with 405 (Meat's idea, as was the "loser leaves town" stipulation). As soon as I saw that, I had visions of Hatfield-Platz all over again, and that's how it played out. Powerlifters always win at low reps, strong bodybuilders always win when the reps start getting higher.