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The point of impact is a personal thing and changes with the gun shape and weight, your grip, the spring setting, the load, and other variables. Sometimes you can "correct" the point of impact just changing slightly the way you grip the gun. The trayectories of most handguns are very "flat" for normal uses, see the trayectories in 5 yard increments from 5 to 30 yards, with a sight height of 0.8":
45 ACP, 230gn, 850 fps: -0.4" , -0.1" , 0.0 , +0.1 , 0.0 , -0.2"
9mm P, 115gn, 1200 fps: -0.5" , -0.3" , -0.1" , 0.0 , 0.0 , 0.0
I can shoot nearly all calibers almost exactly at POA up to 30 yards (or more) once I find the right loads and sight settings.
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