Vignette

[ARshuter]

I saw a show the other day that had a young girl talking about how to set up a scope. She was talking about using a vignette in the scope to help with head position. I was just wondering if anyone does this and if it helps. Opinions?

 

[LHSmith]

Yes, I do it to help eliminate parallax.

 

[ARshuter]

Do you think it helped improve your shooting?

 

[jonbearman]

Its called virette. Yes I have tried it too and it works.

 

[CatShooter]

Its called virette. Yes I have tried it too and it works.

No,it is called "Vignetting" (we speak Engrish here), and it helps your shooting only if your scope has parallax - if you scope does not have parallax, it will do nothing for you.


http://en.wikipedia.org/wiki/Vignetting

 

[jonbearman]

When she said it I must of heard wrong but it does work. Thanks for correcting me.What do you mean by having parallax to do it?

 

[BoydAllen]

In the case of a rifle scope being used to sight a target, if the position of the reticle on the target moves as the eye does behind the scope, when the scope and target are stationary, there is parallax. (The target image and that of the reticle are not in the same plane.)By backing away from the scope slightly one can come to a view that has a black ring around the target image. The distribution of this ring will vary with the position of the eye, and can be used to help the shooter be more uniform in where he places his eye for each shot. If he takes care that the black ring is even around the image, or even if it is not, if it is always the same, then the variability of aim that may be associated with parallax can be reduced. This can be useful when shooting at targets with a scope that has no provision for adjustment to remove parallax.

 

[CatShooter]

When she said it I must of heard wrong but it does work. Thanks for correcting me.What do you mean by having parallax to do it?

If you have parallax, the problem is that you can see the target and the cross hairs, and if you move your head, the POI changes, so your groups get bigger or you miss the PD or whatever.

If you pull your head a little back, you see a dark ring start to form in the scope, and the further you move back, the larger the ring is (and the smaller the hole through it is).

If you pull your head back until it just starts to form, then you use the thickness of the dark ring to force your eye to be in the center EVERY time you shoot - always position your eye so the ring has the same thickness all around - it makes you put your eye in the same axis each time, so even though the scope has parallax, you are not able to move your eye off center... so you are not affected by it.

 

[LHSmith]

Do you think it helped improve your shooting?

Yes. Parallax error can be measured in inches @ 100 yds. All scopes are subject to parallax, most non PA scopes for centerfire rifles are set to be parallax free @ 150 yards at the factory...and don't trust the readings on PA scopes.....verify on the target.

 

[jonbearman]

Thank you all for clarifying that.If I understand what you are saying is to keep the black circle the same thickness each time as well as being centered correct or wrong?

 

[ARshuter]

Thank you all for clarifying that.If I understand what you are saying is to keep the black circle the same thickness each time as well as being centered correct or wrong?

Yes that is correct.

 

[BigDMT]

Thank you all for clarifying that.If I understand what you are saying is to keep the black circle the same thickness each time as well as being centered correct or wrong?

That's one way to eliminate parallax without the convenience of a side focus knob or adjustable front objective on your optic. If your scope does have those features and they work properly when adjusted, then that method is not needed. Almost all of the scopes made in the last 20 years have this adjustment if it has a high enough magnification.

Parallax is very minimal and almost indiscernible in scopes with a max of 10X and under. Doesn't really become a concern with consistent shooting until a scope has a magnification capability of more than 12X. That is why there aren't really any scopes on the market in the 3-9X range with side focus or AO.


Even using the scopes with adjustable focus capabilities, parallax still needs to be verified that it is non-existent before shooting. The yardage settings on a side focus or AO cannot always be trusted no matter what the quality of the scope. I always adjust to the closest 100 yard setting, then constantly move my head around in a circular motion without touching the rifle as I carefully adjust the side focus or AO until I cannot see the cross hair moving on the target. Once that aim is rock solid no matter how you position your head, you've got it set. This needs to be done EVERY time you change the distance you are shooting.

Parallax adjustment is an absolute must when using high power scopes at long range.

 

[22BRGUY]

Its called virette. Yes I have tried it too and it works.

No,it is called "Vignetting" (we speak Engrish here), and it helps your shooting only if your scope has parallax - if you scope does not have parallax, it will do nothing for you.


http://en.wikipedia.org/wiki/Vignetting

So what about those that come here and speak chinese???

 

[bozo699]

Its called virette. Yes I have tried it too and it works.

No,it is called "Vignetting" (we speak Engrish here), and it helps your shooting only if your scope has parallax - if you scope does not have parallax, it will do nothing for you.


http://en.wikipedia.org/wiki/Vignetting

So what about those that come here and speak chinese???

Tell them there in America now and that they NEED to speak English!
Wayne.

 

[22BRGUY]

Its called virette. Yes I have tried it too and it works.

No,it is called "Vignetting" (we speak Engrish here), and it helps your shooting only if your scope has parallax - if you scope does not have parallax, it will do nothing for you.


http://en.wikipedia.org/wiki/Vignetting

So what about those that come here and speak chinese???

Tell them there in America now and that they NEED to speak English!
Wayne.

But it say we speak Engrish.....?

 

[jonbearman]

I guess I got lucky when I tried this in the first place with a plain jane 3-9 fixed objective on a .22.Like you said,the new scopes have parallax adjustments and the point is moot.