Author: calinb
Subject: Do all AO bell adjusters cause reticle wandering?
Posted: July/20/2014 at 17:08
Thanks for your reply to my post, ol0ko. I really thought this issue and my thread would generate more interest here and also some comments from the more experienced gurus. I'm beginning to think that few people have thought to investigate this source of error and the it just gets buried in the other errors associated with live fire testing.
Yes, I suspect the design is inherently inferior to the side parallax adjusters, but I'd like to hear from other users who have the means to measure this error. From a scope manufacturing and assembly standpoint, it seems to be difficult to hold the alignment of the objective lens sufficiently accurately to keep the reticle deviation to an insignificant level of error.
I have a friend who will check his Leupold Vari-X III AO for me, but it's difficult to accurately quantify the amount of reticle wandering, unless you have something like the Leupold Zero-Point tool. The zero-point received great reviews from users (as a sight-in tool), but has been discontinued by Leupold. You can try to point a scope under test at a target grid and strap it down securely, but it's very difficult to make it absolutely motionless during the AO adjustments. The nice thing about the Zero-Point is the inch/100 yard calibrated grid is right in the device and you don't have to even strap down the scope/rifle. You just have to make sure you don't bump or dislodge the position of the Zero-Point on the end of the barrel during scope testing.
Subject: Do all AO bell adjusters cause reticle wandering?
Posted: July/20/2014 at 17:08
Thanks for your reply to my post, ol0ko. I really thought this issue and my thread would generate more interest here and also some comments from the more experienced gurus. I'm beginning to think that few people have thought to investigate this source of error and the it just gets buried in the other errors associated with live fire testing.
Yes, I suspect the design is inherently inferior to the side parallax adjusters, but I'd like to hear from other users who have the means to measure this error. From a scope manufacturing and assembly standpoint, it seems to be difficult to hold the alignment of the objective lens sufficiently accurately to keep the reticle deviation to an insignificant level of error.
I have a friend who will check his Leupold Vari-X III AO for me, but it's difficult to accurately quantify the amount of reticle wandering, unless you have something like the Leupold Zero-Point tool. The zero-point received great reviews from users (as a sight-in tool), but has been discontinued by Leupold. You can try to point a scope under test at a target grid and strap it down securely, but it's very difficult to make it absolutely motionless during the AO adjustments. The nice thing about the Zero-Point is the inch/100 yard calibrated grid is right in the device and you don't have to even strap down the scope/rifle. You just have to make sure you don't bump or dislodge the position of the Zero-Point on the end of the barrel during scope testing.