I thought I might share how I go about adjusting the sights on a firearm (specifically a handgun). I first pick a specific point on the target I want the rounds to hit then I allign my sights on that point. After alligning my sights I take a few, well aimed shots at the point. I then proceed to unload the firearm first and check the Point of Impact. Here's where it might get a tad confusing to newer shooters. If the shots group low of where I had my sights alligned then I go about raising my rear sights. How I think of it is when you raise the rear sights if you took the same sight picture as if it wasn't raised then the front sight wouldn't be properly alligned with the rear sight. Instead it would be lower in the sight picture, so to correct this you would raise the front sight in your sight picture to allign it. When this is done the angle of the firearm changes slightly in how you're holding it. So the angle is raised slightly in order to allign the front sight with the rear sight. All of this results in the Point of Impact being higher, and you would keep adjusting the rear sight until you got the Point of Impact where you are holding the sights. To adjust your sights if the firearm is shooting high you would do exactly the opposite. Lower the rear sights. Then if you took the same sight picture as to if the rear sights were not lowered the front sight would be higher than the rear sight, so you would adjust the front sight and lower it to allign it with the rear sight which slightly adjusts the angle of the firearm. I hope this will be helpfull to y'all. If it was I will do a thread on windage adjustment.