Jerry,
You seem to have a strong grasp on this subject and I would like to ask a question without swating a hornets nest. Physics was and is not my strong suit. It seems that I hear the term peceived recoil and it is different from the actual which is pure physics. Does the perceived recoil differ because of the burn rate of powder such that the recoil is felt over a longer time span or shorter in the case of a percieved sharp recoil?
Best,
Ron