Dave a I use a Point Blank Range system to sight my rifle in. The first step is to shoot the load and projectile through a chronograph and that velocity. From I run the load on a ballistic calculator.


In my case I use a 6" PBR for a ML - knowing then that through the ranges my bullet will never be higher or lower than 3" through the given range.


So the ballistic sheet on the 40x230 would look like this





Showing you:
@ 25 yds the bullet is 0.47"
@ 50 yds up 1.91"
@ 75 yds up 2.176
@ 100 up 2.97"


Also the sheet shows that you can shoot this bullet from 0 to 204 yards and be within the 3" range. Also showing that @ 166 yrds. the bullet should be right at zero...


Al of this is just math so you really have to actually shoot the ranges and see where the bullet impacts. I found out the other day it was very close.


I will tell you after shooting today, especially the 240 yard shots - I did move the windage 2 clicks left and the elevation up 2 clicks.


I based these move on the shooting today. At 100 I was holding the xhair slightly under the bird and still hitting down in the bird. then at 240 I was and have been right on the last two tests.


I really should use a real target but it is so much more fun to shoot some thing that breaks.

The biggest reason I use the Ceramic compound is to seal the pits that are in the bore - plus it really does cut down on residue in the bore and hence it is easier to clean...


Sealing the bore really is my largest reason...