- Thread Starter
- #61
this is the method I use, but as I measured several points along the exposed top of the bolt I could "see" the 20MOA taking effect and think now I just over reacted. The difference at each end is .015". lolPunch the different values into your ballistic calculator for height over bore, note the impact to your drop table. You will find it doesn't have a significant impact to your firing solution out to 1000 yards. All this to say, your ballistic calculator will help with answering different questions by inputting alternative values so you can see the impact on your firing solution. Now it is worth doing things right since the more accurate your inputs the better data that is output. I only point this out so you have a realistic view of what inputs have minimal vs. significant impacts to your firing solution.
This is the method I commonly utilize (taken from another sight as it is written better than I would do):
Below is a formula to help you be a little more precise when determining sight height.
1.) Measure the bolt diameter and divide it in half.
2.) Measure the scope tube diameter and divide it in half. 1.000" / 2 = 0.500" (for 30mm tubes use 1.181")
3.) Measure the distance from the top of the bolt in the rifle to the bottom of the scope on the rifle.
4.) Add the numbers found in the steps 1-3.
Example: Remington 700 .308 with a Leupold Mark 4 M1 Extended Range Tactical Riflescope, 6.5x20x50mm
1) Bolt diameter .696". .696"/2= .348"
2) Scope tube diameter 30mm 1.181/2= .591"
3) Distance from top of bolt to bottom of scope = .75"
Sight Height = .348" + .591" + .75" = 1.68"
I think I should just split that in the middle. Seems like the best point to measure would be under the turrets but they protrude too far to get my calipers in that spot.