I used to do weightlifting. Later as a bodybuilder I easily cleaned and pressed 270 pounds. Might not sound like much but the next best in my gym was 230 pounds. I haven't seen anyone pushing heavy weights like that for years and even decades now. A lost art.
Btw, lots of variations in the press behind neck. Amazing how most cheat. My version has to be with the bar resting on your traps like it would for a squat. Or you could start from over head and touch the traps and then back up. So some guys do presses FROM behind the neck which isn't the same at all. The main thing is that people do the style that allows them to lift respectable poundages.