Parallax and straight power scopes

ArmedGinger

ArmedGinger

CGN Ultra frequent flyer
Rating - 100%
86   0   2
Location
BC
Can someone school me on this?

"Snipers" used to run straight 10x scopes and didn't have parallax adjustments to them. What I mean is, can someone with a 10x scope really shoot as well out to say 600 yards with someone that has say a 2-10x scope with adjustable parallax?

I would assume that your cheek weld would have to be near perfect to get the same "accuracy"?
 
Non a/o centerfire scopes are set to 100 yards for parallax usually. Parallax is more of an issue under 100 yards in those scopes, and pretty negligible once you get past 100 yards.
So for long distance shooting non a/o scopes are not really handicapped.
 
Parallax and long range has to be taken on a case by case basis. Most non AO scopes are adjusted to be parallax free at 100, mostly because they determined a long time ago that most people don't have ranges longer than that to shoot at and would view a more logical distance as a defect for their endless and pointless 100 yard group shooting.

Scopes of 10 and under are less effected by parallax, partly because the shooter can't detect it as easily. In some cases it can be very bad, when the head wobble test is done. Sometimes, its time to go home.

Most Non AO scopes can be user adjusted if you know how.
 
I shot quite a bit with a leupold M8 fixed 6, on my 7mm

I was zero at 100, I noticed My rifle shot left approx 1 Moa starting at 300 yards, I would shoot 3 inches left,
At 500 it shot approx 5 inches left, I set my 100 zero an inch and a half right and it seemsd to steady out at further distance,
I diddnt think a deer wold care if I was a bit to the right at 100 yards, and I was more consistant at 500

Couldnt tell you if its paralax or just how I shot the rifle
 
I looked up some formula on the interwebz forget the info I needed to input but I think the 10x bushnell tactical had the possibility to be off by up to six inches at 600 yards due to parallax.
 
Many fixed power sniper optics have their reticle in the first focal plane. Many variables do not. The later are less robust, subject to larger tolerances and more likely to have small variations in point of aim. Several fixed power sniper scopes also do not have constantly centred reticles for the same reason. Parallax is not an issue if you keep your cheek 'weld' consistent and keep your eye centred in the ocular/exit pupil.
 
As well - many fixed objective scopes, although advertised as parallax-free at 100 yards, vary considerably from this. I had a decent 4x scope that displayed zero parallax at about 450 yards.
 
I shoot fixed power scopes, but with parallax adjustments. If the power is low like on many fixed scopes you won't see as much parallax as on a higher power scope.

There is one trick that I learned from an experienced shooter. Position the scope so that it's a little further from your eye than optimal. When looking through the scope you see a thin shadow or black ring around the image. If the image is centered in this shadow, then your eye is perfectly centered and there will then be no parallax regardless of the distance.

Chris.
 
I've got a Nimrod 10x scope that has loose rotating cross hairs.
I've looked up u-tube vids on reglueing the crosshairs ??
Has anyone had to do this ?? And how did it work??
 
Curious .....for those with adjustable parallax on your scope; how do you set it? Do you simply use the factory inscribed ranges or do you use some other method?
 
AP said:
Curious .....for those with adjustable parallax on your scope; how do you set it? Do you simply use the factory inscribed ranges or do you use some other method?
Click to expand...

I don't ever pay attention to the inscribed numbers. I adjust until the parallax error is gone. You can see if there is parallax error by moving your head up/down and side to side. If there is parallax error the crosshairs will appear to move across the target when your head moves. Just adjust until that goes away. That might or might not be where the image is clearest.

Chris.
 
gunlaker said:
I don't ever pay attention to the inscribed numbers. I adjust until the parallax error is gone. You can see if there is parallax error by moving your head up/down and side to side. If there is parallax error the crosshairs will appear to move across the target when your head moves. Just adjust until that goes away. That might or might not be where the image is clearest.

Chris.
Click to expand...

I will have to do this with my new Sightron, as it has no numbers on the parallax dial.
 
You must log in or register to reply here.
Back
Top Bottom