Rifle Scopes Canted scope question

[old sparky]

I thought I would run this question by you all and see if I am thinking the right. I haven't been around any ballistic optics that have dots placed for different yardages along the vertical cross hair. A co-worker spent some bucks on a 300 win mag, bought a Leupold VXlll 6.5 20 sent it off and got dots installed for a specific bullet and load, he is a hunter ONLY. The scope was put on by the rifle maker. He has been asking to go to a range to test this out. We went to the range today and sighted it in at 200 meters it shot ok 1 1/2" at 200. Started moving the targets out the windage was off by considerably more at each distance. At 500 meters its off 4' very slight breeze. I can see the scope has a very slight cant or not mounted plumb.

Here's the question will a canted scope with multiple dots show more error since the aiming points are along the vertical cross hair rather than a single aiming point and moving elevation since the farthest aiming point would be so far from center?
thanks, Sparky

 

[Graham]

Re: Canted scope question

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: old sparky</div><div class="ubbcode-body">will a canted scope with multiple dots show more error since the aiming points are along the vertical cross hair rather than a single aiming point and moving elevation since the farthest aiming point would be so far from center?</div></div>I don't understand your question. Maybe this will help:

http://www.microlevel.biz/cant_errors.html

 

[Keith Johns]

Re: Canted scope question

A canted scope will throw the bullet off into the direction the top of the scope is canted to, if the rifle is held striaght up.

Quick load/quick target shows this very well.

So, mildots or not, a canted scope is no good.

 

[sobrbiker883]

Re: Canted scope question

If the scope is mounted crooked, that's an easy fix.

If the scope's mounted so the erector is plumb, and the reticle is canted in the scope, you have big problems (especially since Luepold has been known to say that reticles canted less than X degrees are within spec and the buyer is just SOL).

Level the rifle, align the vertical crosshair with a plumb line, then take it out and test it. If it still tracks off on the windage as the distance goes out, the reticle is canted in the scope.