More than once on this board I have asked a question or made a comment and it was taken the wrong way, so let me explain why I ask these questions.
We all know that a set of fixed sights will hit point of aim with a given load at a given range. Since we sometimes deviate in either range or load someone invented adjustable sights. I have to assume that when someone designs a set of fixed sights that they decide on a given load at a given range and arrive at a height for the front and rear sight that enables the average user to hit the target using that load at that range. So, when buying a new gun with fixed sights or when adding a set of fixed sights to a gun, what exactly is this load and range the sights were designed for ? I was considering these sights for my Ruger P89. It came from the factory with fixed sights. Unfortunately, with me behind the trigger, these sights shoot low at 25 yards when using 115 and 124 grain 9mm bullets. I found that 147 grain bullets shoot right on the money. I shot many thousands of 147 grain bullets through the gun, but was never happy about it. First of all 147s are not readily available. You probably won't find 147s at your local WalMart. My local dealer only stocks cast bullets in 147 because I buy them. He orders a few thousand, I buy them, then he never orders more until I need them leaving me high and dry until the order comes in . 147s also recoil more than the lighter bullets. Now the recoil of a handgun in 9mm Luger is pretty much insignificant; but, if you compete with it, every little edge counts. The slightly less recoil allows a quicker recovery which just might move me up a place or two in the standings at the end of a match. So, I called Ashley and asked them at what range and with what bullet are these sights regulated for ? I basically got the run around, never recieving a good answer; I was told basically, don't worry about it. Thus my question, who told you where these sights hit ? I thought maybe you got some information out of Ashley that I didn't.
Since fixed sights only hit point of aim with one load at one range I was also curious about the statement that these sights are "supposed" to hit just above the dot. Again, "supposed" to hit with what load and at what range ? I found that my Ashley sights shoot slightly lower than you describe with 9mm 124 grain bullets. In fact, you cover the intended point of impact with that big ball. I went out today and tried it just to confirm this. If I take a 25 yard bullseye target, move back 25 yards and hold the round dot so it is in the center of the bull (so the dot and the outer scoring ring appear to be concentric circles) I will shoot a nice tight group centered on the 10 ring. I would actually prefer this to it shooting just above the dot.
Obviously load, range, eyesight, ambient light etc. will all play a role.