My buddy and I -- both handloaders, both revolver fans-- were trying to figure something out. We both like the .45 Colt for its ability to push an even bigger and heavier bullet than the .44 Mag at roughly the same velocity but at considerably lower chamber pressures.
So here's a physics question for you: let's say a .44 and a .45 Colt both fire a 300-grain bullet at, say, 1300 fps with however many grains of the same kind of powder it would take to do that in either one. Would the .44 still have a higher felt recoil? That is, does its higher chamber pressure translate into more foot-pounds of kick, or just a different kind of recoil (hard snap vs. slow push)?
Presumably, it would take two revolvers of the same model and barrel length being fired back-to-back to test it empirically, like an SRH in .44 and another in .454. We're both aware that .44 is generally a higher-velocity round than .45 Colt +P, but if a handloader is working up a load for a particular bullet weight at a particular velocity, is lower recoil still a valid reason to go with the .45 Colt over the .44? If this is a stupid question and belies a fundamental lack of understanding of how things work, then please enlighten me.