What Pokemon hits hardest with just a choice band?

Question

People say deoxys-A but rampardos is superior because head smash does more damage, who does the most out of all Pokemon?(don't say any shuckle gimmicks or anything.)

Answer 1

Mega Rayquaza
180 base attack + band using Dragons Ascent/Outrage will slaughter any non resistant types
252+ Atk Choice Band Mega Rayquaza Outrage vs. 248 HP / 216+ Def Rotom-W: 292-345 (96.3 - 113.8%) -- 81.3% chance to OHKO
(292, 295, 300, 303, 306, 310, 313, 316, 319, 324, 327, 330, 334, 337, 340, 345)
Murders one of the most common tanks in the game

Rampardos
165 Base + Band Head Smash. even resisted will still probably OHKO

252+ Atk Choice Band Mold Breaker Rampardos Head Smash vs. 248 HP / 216+ Def Rotom-W: 340-402 (112.2 - 132.6%) -- guaranteed OHKO
(340, 345, 349, 352, 357, 361, 364, 369, 373, 376, 381, 385, 388, 393, 397, 402)
Decimates It with no chance of survival

Comments

Can you add calcs?

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Due to me being an idiot and thinking Giga Impact had base 200 power instead of 150 ive cut Regigigas and Slaking. Tho they can destroy plenty of pokes themselves.

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Yay! My favorite dinosaur is the strongest thing on the planet :D

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Black Kyurem

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Still can't ohko Chansey. Nothing Ohko's unless it's fighting geez