Rifle Scopes nightforce F1 parallax adjustment - Do I need to be at the range to set this up?

[RogueHk]

So I'm just finally getting ready to go to the range (which is about a year or more of failing to do so because of my kids needing me more lol.... )

I was wondering if I really have to be at the range to set this up or if i can do it at home in my back yard ?

 

[Lowlight]

Parallax is adjusted for each yard line ...

Do you mean the ocular focus which adjusts the reticle focus?

 

[RogueHk]

yes i mean that. where you can move your head side to side and the reticle stays put. btw i wear glasses...

 

[MMAJunkie]

To me Parallax (sometimes called side focus) is something that is constantly adjusted as I move from 100-200-300 yards etc. Sometimes I even tweak it a little during a session at the same range. Its not relly something that you just "SET" and never touch it that is why its usually on the side of the scope or on top where its easily adjustable.

 

[Lowlight]

No you're confused.

The he ocular adjust the sharpness of the reticle, what you are describing is indeed parallax and is not "set" but adjusted. You adjust that at each new range.

Ocular Focus is set, it's done before you use the scope and locked in place with a NF

 

[RogueHk]

ok so it sounds like i need to make sure my Oclar Focus is correct. I think I need to RTFM some more and figure that out. If you have a video on that... that would be awesome sometimes I ride the short bus lol

 

[delixe]

Here's how I adjust the ocular on a scope.
Some say set the side focus to infinity or crank the magnification all the way up. I've not seen any difference regardless of the side (or objective) focus position, but I set FFP scopes to full magnification so that I can see the greatest detail in the reticle.
I do this during the day, while aiming the scope at the sky so that my eye is not adjusting to bring the FOV into focus.

Unfortunately, if you look through the scope for more than a few seconds, your eye will adjust to bring the retile into focus, so you have to look away for a few seconds so your eye relaxes, then look through the scope; adjust the ocular and try again. When the ocular is properly adjusted, the reticle will be in focus immediately. For most scopes I've owned this technique is all I need to do to set the ocular.

However, I find that some scopes need a fine tuning at the range. Some scopes do not require it, but some do in my experience.
For those scopes (mine were a Steiner Military 5-25 and an S&B 5-25) there's a pretty wide range of ocular adjustment where the reticle appears focused, but there's only one ocular setting where the field of view (target) is focused at the same point in the parallax adjustment as all parallax is eliminated.

What I mean is, if I adjust the side (or objective) focus to until the target is in focus, then fine tune the side focus to eliminate all parallax, it pulls the target slightly out of focus. By holding the rifle steady while moving my head, I can see the reticle shift on the target when there's parallax error present. When the reticle does not move relative to the target regardless of eye position, my parallax adjustment is set. What I did then was tweaking the ocular adjustment until the target was in sharp focus. It only required a small adjustment, and the reticle was still in focus. I never needed to touch the ocular adjustment again. The reticle is perfectly focused and when a target at any distance is brought into focus with the side focus (parallax) adjustment, all parallax error is eliminated.

No doubt some will scoff, but I'm not the only one here at the Hide who has experienced this.

 

[STLSteve86]

I'd like to see a video on this


Sent from my iPhone using Tapatalk

 

[4000fps]

A video on how to focus an optic. Sigh...just look at the sky and turn eyepiece until the reticle is crisp. For parallax, it changes all the time. Just turn the knob until the target is crisp. No different than focusing your binos. Move eye side to side to confirm the reticle doesn't wander.

 

[damoncali]

You don't need a video. Just turn the ocular until the reticle is sharply focused. You're done.

For parallax, just look through the scope at the target. Move your head from side to side behind the scope. If the cross hairs appear to move relative to the target, you have a parallax problem. Adjust the parallax and try again until the cross hairs are stuck on the target.