Hardest puncher ever and why?

[Grand Champ]

The title speaks for it self

[Richie-G]

id say joe louis or rocky marciano

marciano because he had 43 ko's from 49 fights
louis because he knocked out so many great contenders

possibly sam langford

[sugarshanenas]

Shavers for his right hand
Tyson for speed,accuracy,and explosiveness
Liston,Baer,and Foreman for Raw strength

[Nick Fury]

P4P I think Julian Jackson. Dude was just lethal.

[Good Barracuda]

Gamboa-unbelievable Power speed technical work.

[Ian_ST24i]

Tommy Hearns? The Duran KO...

[Bendigo]

George Foreman because he could punch you through a wall made out of pure diamonds.

[YUHHHHHHH!]

Joe Calzaghe.

[JulioCesaChavez]

Iron Mike Tyson is one of the main candidates because he could explode with either hand and a variety of punches. He was well schooled and didn't just develop power in particular shots like many other top fighters.

[fight_professor]

For 1 shot power, Shavers. Holmes and Ali say he's the hardest puncher they felt.

For sustained power, combos and accurate shots all factored in, Tyson.