For all users of scopes with adjustable scope rings where the rear of the scope is higher than the front, how do you measure the actual height of the scope so it will align with ballistics calculators?
Keith
Keith
Scope Question
- Thread starter Keith2324
- Start date
The relevant point is the erector tube, which is located at the turrets. In other words, the precise scope height is neither the measurement at the rear ring nor the front ring, but in between.
Upvote 0
On a similar tangent my vulcan 3 hp has a 20 moa built in how does that affect my balistic calculator on my tnc225r
Upvote 0
I just measure centerline of the scope tube in front of the turrets. Run the calculator at various ranges, if it's not on I adjust values in the calculator until my confirmed hits at various ranges match.
The old school way I did it before I used strelok, just shoot at different ranges and put stickers in the right spots. Incline decline I just figured out the dope I needed for the usual shooting spots.
Don't let analysis paralysis get you or take the fun out of it.
Upvote 0
This topic was discussed about one month ago:
www.airgunnation.com
in short, the error that would be induced by entering the scope height measured at the objective as opposed to the eyepiece is negligible, unless you have a ton of built in elevation (~80 MOA).
What's the Scope Height with Factory 30 MOA Tilted Rails?
In modern digital optics with built-in laser range finders they can calculate your point of impact at different distances when you use the built in lrf (oneleaf nv500). To do so you have to put in all your ballistic info in the menu on the optic. One parameter is scope height. The problem is my...
www.airgunnation.com in short, the error that would be induced by entering the scope height measured at the objective as opposed to the eyepiece is negligible, unless you have a ton of built in elevation (~80 MOA).
Upvote 0
if i had all that adjustability, id set it to optical center then adjust the rings to where it was close to correct elevation at the 'ideal' zero for the gun .. for most airguns its typically around 20yds ..
Upvote 0
It will get asked in another month. It's how forums go.This topic was discussed about one month ago:
What's the Scope Height with Factory 30 MOA Tilted Rails?
In modern digital optics with built-in laser range finders they can calculate your point of impact at different distances when you use the built in lrf (oneleaf nv500). To do so you have to put in all your ballistic info in the menu on the optic. One parameter is scope height. The problem is my...
in short, the error that would be induced by entering the scope height measured at the objective as opposed to the eyepiece is negligible, unless you have a ton of built in elevation (~80 MOA).
Upvote 0
Optical makes sense for clarity and light. Next time I'm doing that. I almost almost bottomed out my turret and then tilted mine down so I have the maximum use of elevation. It wasn't necessary.
Upvote 0
Measuring close to the front or center of the turrets in FFP scope's and more towards the eye piece on SFP scope's will get you a pretty good measurement for your ballistics app. If you want to fine tune it, do a fairly precise and verified speed and bc setting for the projectile first, then check/test the really close range readings/settings in relation to the dope chart numbers. The close range dope chart will have more feedback on the height number than longer ranges. Whereas a dope chart for longer ranges are more speed and overall drop/holdover critical.
Upvote 0
I would think it is still the center line if the front lens to get the distance between the bore and the scope site, that tilt is part of the relationship
Upvote 0