Originally Posted By: Rocketman
Chuck, I agree that pressure and recoil are tied at the hip,...


Exactly!


Originally Posted By: Rocketman
...but pressure alone is not a cause or indicator/predictor of recoil.

Don, you know me better than that. I never meant to imply it was. Just if you have high pressures vs low pressures, while payload and velocity are a constant, the acceleration curve of the payload and the firearm are different. I'm not saying the crowd that says ejecta weight, velocity = recoil are not wrong, IMO, they are just looking at it from the higher overall perspective. That is: total energy, the E=MC2 level.