A cartridge develops a certain amount of pressure which shoves the slide back. That energy doesn't depend on the spring at all. All the spring does is change how long the slide takes to move back, so the spring can spread the force out over time.
It seems counter intuitive to me that a stiffer spring would reduce the recoil. It would change the nature of the recoil but not the total magnitude. In my unscientific experience it seems that the lighter springs on my Sigs result in a softer feeling recoil. YMMV.
It seems counter intuitive to me that a stiffer spring would reduce the recoil. It would change the nature of the recoil but not the total magnitude. In my unscientific experience it seems that the lighter springs on my Sigs result in a softer feeling recoil. YMMV.