Rifle Scopes Scope tracks 1" low in tall test. How to correct in drop calculation?

[Pastureman98]

I tall tested my Bushnell DMR II today and discovered it is .3 mils low (1" @ 100 yds0. I read a bunch of things here today but nothing specifically on how to correct

 

[natdscott]

Uh. In how many mils was it 0.3 low?

To correct, you write it down or commit it to memory, and then dial or hold over more.

 

[Pastureman98]

.3 mils low. At 100 yds that is 1.08" correct? I thought that would correct, but after reading scope threads here it seems some apps have a way to add this into the calculations. Probably just easier to remember to take .3mils off every time.
Many Thanks

 

[Apnea]

.3 mils low. At 100 yds that is 1.08" correct?

How many mils did you dial when you were 0.3 off?

Just for the sake of argument, say you dialed 1 mil and measured that you actually moved the reticle 1.3 mils, that would mean the scope tracks 30% farther than the turret indicates.

 

[Pastureman98]

Based on the info I read from lowlight, I did a full rotation to equal 36". When I made a full rotation it went down to 37". Prior to the tracking I took the scope off and re-leveled everything. I have not previously shot far enough for this to matter, but last match went to 1288 yds so I figured I should check.
To answer your question, I dialed 10 mils.

 

[Blowby]

Just use a 1.028 correction factor in your ballistic calculator. All your output data will be taking your error into account. Let’s say you shoot to a distance that requires 18 mils. Your output from the calculator will now be 18.5 mils based on the correction factor you found your scope needs.

 

[Pastureman98]

Thank you, Sir.