"Most Damage On Turn 1"

What is the maxium amount of damage possible on turn one with NO setup? Let's take a quick look; *All damage will be cualculated on a level 100 ???-type Mew, not considering counter/magic coat. I know it would do more damage on a level 1 pokemon, but let's pretend it's an actual battleFirst of all, let's look at the pokemon with the highest base attack in the game:252+ Atk Mewtwo-Mega-X Focus Punch vs. 0 HP / 0 Def Mew on a critical hit: 538-634 (157.7 - 185.9%) -- guaranteed OHKOHighest Special attack:252+ SpA Mewtwo-Mega-Y Psystrike vs. 0 HP / 0 Def Mew on a critical hit: 366-432 (107.3 - 126.6%) -- guaranteed OHKOHighest Special attack + Weather:252+ SpA Kyogre-Primal Water Spout (150 BP) vs. 0 HP / 0 SpD Mew in Heavy Rain on a critical hit: 775-913 (227.2 - 267.7%) -- guaranteed OHKOHighest Attack + Weather:252+ Atk Groudon-Primal Precipice Blades vs. 0 HP / 0 Def Mew on a critical hit: 414-487 (121.4 - 142.8%) -- guaranteed OHKOHighest Attack + Huge Power:252+ Atk Huge Power Mawile-Mega Play Rough vs. 0 HP / 0 Def Mew on a critical hit: 417-492 (122.2 - 144.2%) -- guaranteed OHKO2nd Highest Attack + Huge Power but with 130 BP move:252+ Atk Pure Power Medicham-Mega High Jump Kick vs. 0 HP / 0 Def Mew on a critical hit: 582-685 (170.6 - 200.8%) -- guaranteed OHKOHighest Stabbed Z-Move:252+ Atk Victini Inferno Overdrive (220 BP) vs. 0 HP / 0 Def Mew on a critical hit: 492-580 (144.2 - 170%) -- guaranteed OHKOHighest Base Attack Stabbed Explosion:252+ Atk Choice Band Silvally Explosion vs. 0 HP / 0 Def Mew on a critical hit: 810-954 (237.5 - 279.7%) -- guaranteed OHKOHighest Base Attack -ite Explosion:252+ Atk Choice Band Galvanize Golem-Alola Explosion vs. 0 HP / 0 Def Mew on a critical hit: 1140-1342 (334.3 - 393.5%) -- guaranteed OHKOHighest Base Attack Adaptability:252+ Atk Adaptability Lucario-Mega Focus Punch vs. 0 HP / 0 Def Mew on a critical hit: 582-686 (170.6 - 201.1%) -- guaranteed OHKOHighest Attack Aerialite:252+ Atk Aerilate Pinsir-Mega Double-Edge vs. 0 HP / 0 Def Mew on a critical hit: 442-522 (129.6 - 153%) -- guaranteed OHKOSo, Tl;Dr:Mewtwo-X: 157.7 - 185.9%Mewtwo-Y: 107.3 - 126.6%Primal-Kyogre: 227.2 - 267.7%Primal-Groundon: 121.4 - 142.8%Mega-Mawile: 122.2 - 144.2%Mega-Medicham: 170.6 - 200.8%Victini: 144.2 - 170%Silvally: 237.5 - 279.7%Alolan-Golem: 334.3 - 393.5%Mega-Lucario: 170.6 - 201.1%Mega-Pinsir: 129.6 - 153%So, The winner is.. (by FAR) ALOLAN GOLEM! With 393.5% Damage on our Test-Mew! That's all, hope you know how to demolish the Battle Royale now :)EDIT: Formatting via /r/pokemon http://ift.tt/2rIdlyT