Perceived, or "felt" recoil is not provable. That's why the term is so popular among those who are trying to sell us some modification that will reduce "felt" recoil. It's like "the smartest woman in the world", who can't remember where files under her bed are but remembers being named for a famous mountain climber, who nobody ever heard of until she was about 3 years old. She remembers baby-sitting for "undocumented Americans" who worked in the fields across the street from her house..........IN CHICAGO! (AKA, BS)
As Larry and Rocket have said, pressure doesn't relate to recoil and "light" loads do not necessarily imply low pressure.
