I have 2 guys who work for me: 1 benches 565 and the other 535.
The 565 guy is a gym rat. 5 hrs a day in the gym. No other life other than work and gym. He did a demo at a high school for where he benched 235 for 62 reps.
The 535 guy was U of IN football team captain, had been drafted by Dallas but blew out a knee in training, and his dad played for Dallas and Pittsburg. The guy's mom has bigger hands that I.
Both are big ole boys. They got that way naturally - good genes and lots and lots of gym time. Getting uniforms to fit and look decent is a job for the tailor. Just too much upper bulk and body taper.