I have several handguns, as do most people, and would like to do a rough sighting in. Rather than do a precision sighting I just want to get close to the center of the target. In preserving ammo and not taking into consideration the different manufacturers bullets and calibers I would just like to pick a distance and sight in. Would you recommend a 10', 20' 30'...? Commenta are appreciated. Wanna kill these ads? We can help!