I lent my Zefal HP to a skinny middle aged roadie 45 years ago so he could pump his sewups up to 120 for the club TT. He did it easily. I doubt that would be harder with a modern HPX. I've never even wanted to ride that much pressure. But I've used those pumps to get 110- 115 psi many times. It isn't remotely a challenge.
Now if this is for seating tubeless, can't help you. Never tried and never ridden them.