If you count the chain, it's #265ish for a few a couple of years ago -
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Article from when he was gearing up for Tyson -
"A year ago, when Holyfield began his run for Tyson's title, he could bench-press 190 pounds. "Today he's 33 percent stronger than he was last year," says Tim Hallmark, Holyfield's physical-fitness guru. "He does 10 repetitions with 360 pounds after his pulse rate has risen to 180 or 190 beats per minute"
Holyfield had high quality help during that run, and I'm sure he was probably one of the stronger boxers in the game, but not #360 x 12 strong. The one caveat is maybe if it was a machine press. Lots of that in Boxing.