I was looking at all these leveling devices for scopes and thinking that its almost impossible to get a scope on a gun perfectly. Yet my guns shoot pretty good and I'm just keeping the scope level knowing that the barrel under it might be off a little.- When you level the gun you are assuming. 1. That the top of the gun breach is actually level and perfectly aligned with the barrel under it. Even if the level is perfect (many small ones are not) the top of the receiver might be out of line with the barrel in some way (Up, down, left or right) 2. That the top of the Scopes cap is really aligned with the cross hairs. (its close but not always aligned)Seems all these errors can add up to a mess but it does not seem to .This article explains why a little can't error is not as bad as it seems. Keep the scope level is all you need to do. Take a look see what you guys think.https://bangsteel.wordpress.com/2013/05/19/canted-scope-or-canted-rifle-the-difference/I think maybe the best way is to trust that the top of the gun is somewhat true. Then use a level and lock it in vise leveled. Then mount the scope and level just the scope with a plumb line. DONE. Then just adjust windage and elevation shooting from a bench.
Quote from: RAJOD on June 16, 2017, 01:22:35 AMI was looking at all these leveling devices for scopes and thinking that its almost impossible to get a scope on a gun perfectly. Yet my guns shoot pretty good and I'm just keeping the scope level knowing that the barrel under it might be off a little.- When you level the gun you are assuming. 1. That the top of the gun breach is actually level and perfectly aligned with the barrel under it. Even if the level is perfect (many small ones are not) the top of the receiver might be out of line with the barrel in some way (Up, down, left or right) 2. That the top of the Scopes cap is really aligned with the cross hairs. (its close but not always aligned)Seems all these errors can add up to a mess but it does not seem to .This article explains why a little can't error is not as bad as it seems. Keep the scope level is all you need to do. Take a look see what you guys think.https://bangsteel.wordpress.com/2013/05/19/canted-scope-or-canted-rifle-the-difference/I think maybe the best way is to trust that the top of the gun is somewhat true. Then use a level and lock it in vise leveled. Then mount the scope and level just the scope with a plumb line. DONE. Then just adjust windage and elevation shooting from a bench.Humm.......seems that these shooters disagree............http://www.airgunnation.com/topic/effects-of-rifle-cant-at-50-yards/http://www.accurateshooter.com/optics/canting-effect-on-point-of-impact/
As a serious Air Gun FIELD TARGET competitor .... Cant is very real and worthy of ones attention in minimizing it.
I've personally never used a level, I'm not what ya call a paper puncher, basically I just eyeball the level of my crosshair and adjust from there Even with my Mrod at 80 yards it amazes me just how accurate this gun is and in all reality I don't feel the need for a level at the moment. I plink once in a great while over at my brothers just for a little fun competition and he basically eyeballs his scopes too.
Midway sells this gizmo obstansibly made by Weaver:http://www.midwayusa.com/product/143387/weaver-modular-scope-level-systemI am sure others sell it too.I use this thing.You can see how it works.Metal bar above the receiver (flat part or in a slot), rubber band under the receiver.Look through the scope and align the cross-hairs with the lines.The first of these had no level on them.This is the MK-II version.Throw it in your kit and you can check the alignment anytime.
Here is a thread on scope cant by Scotcmo:https://www.gatewaytoairguns.org/GTA/index.php?topic=72099.0Using his mirror method should reduce most cant error. To eliminate all error, after using the mirror method make sure your scope vertical reticle is aligned with the point of impact at the apex of pellet trajectory. Then you would have to shoot at different ranges closer and further than the apex of your pellet trajectory and then make small adjustments to scope rotation.Unless a manufacturer states that any part of the rifle is trued to the bore you are only assuming. Also it is possible that the bore of your barrel was drilled off center, even the most minute amount. Shooting groups on the near and far side of the pellet trajectory apex will show you what scope rotations adjustments need to be made after you've aligned your vertical reticle to the pellet trajectory apex poi.Thanks,Taso