Quote Originally Posted by Peter Laidlericon View Post
Er........ surely if your group is 4.5" low, then you've got to RAISE the backsight - if you're using the backsight as the zeroing medium. And on the VERY rough ready reckoner method that 1 click equates to 1" at 100 yards (it doesn't but it's sort of close in a sort of average sort of way.....) then to raise the group you've got to RAISE the backsight by 2 or 3 clicks. No?
Either I am not explaining myself correctly or you are just not understanding what I am trying to do. I'll try again to make this as simple as I can.
I am not using the backsight as a zeroing medium. I am using the front sight. From my original post and using the same formula you suggested it looks like my starting point for selecting a new front blade should be the 0.00 blade.
So I'll go to the 25 yard line, install the 0.00 blade, and set the rear sight for 200 yards. At this point depending on how close I am I can change the front blade again until I am about .75 high, correct.
Then if I change nothing and move to the 100 yard line then I should be about 2-3 inches high, correct?
Then if I were to change nothing and move to the 200 yard line then I should be right on, correct?
So at this point I'll have the correct front sight blade and I'll be zeroed at 200 yards (with the rear sight set to 200 yards).
At this point if I move back to the 100 yard line (I haven't moved my rear sight, it's still set to 200), my shots should still be 2-3 inches high right?
Okay now that we have that established...
I am now at the 100 yard line and I lower my rear sight from 200 to 3 clicks below the 200 yard line on the sight. Where are my shots going to hit?
If 1 click equals approximately 1" at 100 yards then it seems to me that lowering my rear sight 3 clicks would lower my POI at 100 yards approximately 3 inches. Which would put me where at 100 yards?