Parallax Settings on Scopes...

B_Mc

What exactly does this mean???

I have a Simmons 44mag 3x10 scope mounted on my Remington 700 30.06 and i have had very good luck hunting with this combo. I am just curious as to what the adjustment that is on the eye piece is used for??

dcs shooters

The marks are about the yards to the target.

Tailgunner1954

Paralax error has to do with focusing both your eye and the target onto the crosshair. All scopes can focus your eye to the x-hair by adjusting the ocular lens, the AO scopes can also focus the target to the x-hair by adjusting the objective lens. BTW, the yardage marks are just for rough referance.

As far as to what effect paralax has, the easiest way to see it is to move your eye side to side and see if the target moves relative to the crosshair. Only that target distance where it DOSN"T move is paralax free. The amount of movement you see is also the amount that your shot may be off.

Hawk Carse

Parallax is caused by different lines of sight to distant objects.

In a scope sight parallax correction needs to be made so that the target and the crosshairs are in the same optical plane.
You can tell when parallax is not corrected if you can move your head around behind the scope and the crosshairs appear to move on the target. The adjustment on the scope is to eliminate that wobble. Hunting scopes are corrected for one fixed range, usually about 150 yards and are not usually too bad beyond that. But the target shooter needs it to be RIGHT.

perry shooter

Hello look through your scope from the very center of the eye piece with the scope either mounted on a fire arm in a rest or setting on a table Etc where it can not move. Then line the cross hairs up with a target with out moving the scope move your eye around different parts of the eye piece lens and watch the cross hairs in relationship with the target . If the cross hairs don't move in relationship to the target then you can say that scope is parallax free at that distance. Now take the same set up but put the target at say 25 feet and do the same test most likely there will be some movement because a scope is only completely parallax free at one distance.Don't confuse this with focus that is adjustable with most higher Variable scopes. Most scopes are parallax free at 100 yards but some like air-gun scopes and even 22Rimfire scopes are set up for shorter distance. I have seen poor quality scopes with over 6 inches of parallax at 100 yards if you think about this it would be very hard to shoot good groups with this scope on even a bench-rest quality rifle unless your eye was exactly centered in the eye-piece each and every time.

JustC

I can only add to the previuos posts by saying, that you will most often find the parralx setting to not completely agree with the marks on the adjustment ring. The only way to shoot consistent tight groups, is to make sure there is no parralax in the scope.