Rifle Scopes How critical is having no paralex adjustment

[45user]

Let me try this again.
I bought a sig tango6 2-12x40 at a pretty good price but little did I know that it doesn't have any parallex adjustment. I'm planning to use this scope for short to mid range, anywhere from inside 100 yards to maybe about 600-800 yards max. I looked through the scope and it seems to be ok down to 25 yards at 12x.
I didn't find any review of this specific scope but other scopes in the tango6 series seems to be getting good review so I bought it to try. Glass is very clear and knobs are little on the mushy side but not too bad. You can still hear the knob and feel when turning.
so how critical is it not to have parallex adjustment when shooting longer range, 600-800 yards?
It is a FFP mil/mil with illuminated reticle
thank you in advance.
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[spife7980]

If you have your eye set up properly it matters zero. The issues comes with getting your cheek right so that your eye is perfectly centered every time. If you are perfectly centered parallax doesnt show up, its only when you get off center that the parallax begins to rear its ugly head and it only gets worse the farther off center you get.

Take your scope and set it on the edge of a table looking through a window and aim it at something 700 yards away. Now dont touch it while its sitting there but move your eye around. The distance that you see your cross hair drift over the target image is how much parallax there is at that distance. Obviously you will notice it isnt only a little bit but people have been shooting that far with fixed scopes for along time now. Its just more to have to consider on every shot.

Where did you get it from and whats their return policy?

 

[45user]

If you have your eye set up properly it matters zero. The issues comes with getting your cheek right so that your eye is perfectly centered every time. If you are perfectly centered parallax doesnt show up, its only when you get off center that the parallax begins to rear its ugly head and it only gets worse the farther off center you get.

Take your scope and set it on the edge of a table looking through a window and aim it at something 700 yards away. Now dont touch it while its sitting there but move your eye around. The distance that you see your cross hair drift over the target image is how much parallax there is at that distance. Obviously you will notice it isnt only a little bit but people have been shooting that far with fixed scopes for along time now. Its just more to have to consider on every shot.

Where did you get it from and whats their return policy?

Thanks for the explanation.
Got it from optics planet and it says return within 30 days
i will need to take it out somewhere I can see far. I live in a city and about 100-150 yards is all I can see without any obstruction..
maybe I should return it and start over...
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[scudzuki]

As spife7980 described you can figure out how much parallax error the scope has at various distances, but if you are able to get a consistent cheek weld and so keep your eye placement close to the optical axis (centerline) of the scope, you will introduce far less error than what you can see moving your eye around the limits of the eyebox.
If you're trying to shoot tiny groups it's not the best scope for that (except at the distance at which the parallax is fixed to, usually 100 yards) but it may well be good enough for shooting steel and/or tactical competitions.

 

[B-P-UU]

Parallax error is also a function of magnification, so at 10-12 power, it shouldn't be a huge deal.

 

[45user]

thank you all for your help! I really like the scope for the price(paid $473 shipped) but not having parallex adjustment is killing me...
decisions decisions...
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[NukeMMC]

thank you all for your help! I really like the scope for the price(paid $473 shipped) but not having parallex adjustment is killing me...
decisions decisions...
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I have a $1000+ Nightforce NXS 2.5-10x24 that has no parallax adjustment. There is little reason to have parallax adjustment below 10-12x as the displacement of the reticle in relation to the observed target is miniscule. If you have the eyepiece (and thus reticle) focus correct then pick a medium distance object, say 300-500yds away, and get into a few shooting positions while targeting that object.. Shift your head left and right and see if the reticle moves in relation to the object you are aiming at. Do this at different magnifications. There may be some slight movement but you'll probably find it only noticeable at high magnification. As said before, the more consistent your cheek weld, the less a parallax error will affect your accuracy.

 

[Deleted member 10043]

It is a non issue and one less thing to deal with.