don't have a trigger guage, but have about 400 rounds through my sd9ve, and can feel the difference between it and my wifes new sd9ve still in box with zero rounds through it,so they do lighten up with use, anybody know how much?
300-500 rounds live or dry fire generally smooths out the rough spots on the various parts. May not actually produce a measurable difference in actual weight, but it feels lighter.