Alright, I'm disappointed.
Several people have posted sets that don't even work. The last two sets, Charizard and Rhyperior (deleted), are simply not going to work, yet it is claimed that they do work in both posts.
I'll put my comments on Charizard here. I deleted it for a sec, but I restored it so everyone can see. I'm leaving Rhy deleted as it wasn't me who took care of it.
Honestly...Belly Drum Charizard? How will you set up with SR floating about? Have you considered the fact that +6 Dragon Claw WON'T OHKO Giratina? Have you taken Kyogre into account (when Rain literally shuts it down and Charizard won't even OHKO Blissey)? Have you taken Rayquaza into account (in both sweeping power and the ability to end your set with ExtremeSpeed)? As others have stated, it has a miniscule chance of sweeping.
<this goes out to everyone who's new to the metagame>
....Start learning about the metagame first. Play in it, and look through Doug's amazing statistics. If you people are under the impression that anything works in the Uber metagame, your mentality must've been twisted. If you feel that your set is wrongly judged, back it up with logs. We can then analyze your logs and see if they prove your set works or not.
Also, Gen, Charizard wouldn't be able to Drum at all. HP IV of 30 puts Zard at even HP, meaning SR will cut exactly half of its HP away.