Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Long Range Scopes and Other Optics

Long Range Scopes and Other Optics Nightforce Optics


Reply

Please help with NFORCE NSX Set-up

 
LinkBack Thread Tools Display Modes
  #1  
Old 01-11-2014, 06:54 PM
Junior Member
 
Join Date: Jan 2014
Posts: 7
Please help with NFORCE NSX Set-up

Thank you for taking time to help answer this question. I'm new to Nightforce and ballistic turrets. I have a Zero Stop NXS on top of a 300 Win Mag. Had it all built/rigged by Gunsmith. I laser bore sighted it (to try to avoid wasting rounds), and took it to the range today.

I Zero'd it at 100 to take complete advantage of the turret system. Came home to set the Zero stop, and found I can't do it because to get Zero at 100, required the turret to be turned up high, past the 2nd turret ring. Is that normal?

I came back home and turned the turret all the way down to where it was seated just above the 1st turret ring, and put the laser bore sight device in, and, have confirmed that in order for the rifle to be Zero'd at 100, I would have to spin the turret all the way up high again, past the 2nd turret ring. When it is that high, you can't set the Zero Stop because the set screws on the turret cover are too high to tighten the cap on, after the upper clutch face is turned down against the lower clutch face.

Could it be that my scope is mounted too low? I did as much on-line research as I could to try and find an answer, but came up empty handed. Any advise is appreciated very much.
Reply With Quote
  #2  
Old 01-12-2014, 12:14 AM
Platinum Member
 
Join Date: Feb 2007
Location: Townsend, Montana.
Posts: 7,764
Re: Please help with NFORCE NSX Set-up

With a zero cant rail or standard rings and bases you should have 50 moa up and 50 moa down. If you are at the end of your adjustment it is one of two things.

Wrong bases or a canted rail installed backwards. The thickest end is to be mounted closest to the shooter.

I am not following your description well ( second ring??)

Once zeroed, remove turret knob by loosening two set screws and pulling up. Then loosen 4 clutch screws just enough you can rotate zero stop clutch. Rotate clutch clockwise until it stops and tighten it. Reinstall turret knob.

If you can not do this for any reason something is wrong with base , rings or the scope is broken. But I have never seen a NXS fail and I have been around plenty of them.

Jeff
__________________
Reply With Quote
  #3  
Old 01-12-2014, 10:22 AM
Junior Member
 
Join Date: Jan 2014
Posts: 7
Re: Please help with NFORCE NSX Set-up

Thank you so much Jeff for taking a stab at answering my question. My explanation was a little confusing so I will try to re-word it with hopes that it makes a little better sense.

I had all the components of my weapon, including the scope, assembled by a Gunsmith. Nightforce rings were used on standard bases that his shop supplied, (and i confirmed the "thicker" base is closest to the shooter), and he fired the weapon providing me with a target demonstrating less than 1/4 MOA 3 shot group at 100 yards.

When I took the rifle to the range myself, (after double checking his work with my laser bore sight, which did not require me to make any adjustments), I also shot a strong 3 shot group, dead on bulls eye. It was now time to set the Zero Stop, so I came home to set the Zero Stop.

I pulled out the instruction sheet as to setting the Zero Stop and followed the instructions exactly. When it came time, however, to put the turret cover back on, I could not screw the set screws to hold the cover on, because INTERNALLY (under neath the turret cover) above the Zero Stop clutch and below the top of the turret cover, there was a void; open space that could not be closed no matter how hard (within reason obviously) I tried to push the cover down any further. I therefore put everything back to normal and tried to run through the exact same process again, only to find the same exact thing was happening over and over again.

In looking at things, I soon realized that the only way to zero the scope in, (as it was assembled by the Gunsmith), is if the turret is turned up so high, that you can see at least 2, closer to 3 REVOLUTION LINES below the turret cap. I'm talking about the horizontal revolution lines that go around the turret body, that get exposed more and more the further up the turret cap is turned. In my case, since i have the new NXS, It looks like I have only 4 of those lines, and they are labeled 1-4.

My thinking is that zeroing in at 100, that being my Zero Stop point, means my turret shouldn't have to be turned up so very high. If that is the case, then am I not losing all the scoping range BELOW that 2nd or 3rd Revolution Line since my zero would be stopped at the 2nd or 3rd revolution ring?
Reply With Quote
  #4  
Old 01-12-2014, 10:35 AM
Platinum Member
 
Join Date: Feb 2007
Location: Townsend, Montana.
Posts: 7,764
Re: Please help with NFORCE NSX Set-up

I think I got it now. Here is the deal. With a zero cant, also known as a zero MOA or standard rail / mount. Your scope should zero at 100 yards close to the middle of your elevation travel. This equates on your scope to 50 moa of dial up elevation and 50 moa of down adjustment. That 50 down will not be used with your current scope base if it is indeed a standard, 0 moa. mount. If you want to be closer to your #1 line, or zero line on that scale, you will need to change your rail mount out for a 40 MOA canted rail. Or a 20 moa would also get you closer if your existing rail is indeed a zero moa or standard rail / mount.

That said with your current set up you should have at least somewhere around 50 moa of elevation adjustment. That will get many rifles to 1500 plus yards. What caliber and bullet are you using and what is the max distance you intend to use this rifle? Then I can offer some better defined advice to your specific application.

Jeff
__________________
Reply With Quote
  #5  
Old 01-12-2014, 10:56 AM
Silver Member
 
Join Date: Dec 2008
Posts: 198
Re: Please help with NFORCE NSX Set-up

Keep in mind as you move towards the extreme of your vertical adjustment up (dialing for distance) or down (40 MOA canted rail) your field of view, light transmission, and clarity will not be optimal.

As you move to the center of your adjustment the image begins to be optimized.

My personal preference is for more cant in my scope base. There is less of a premium on a crisp clear image up close as there is when shooting longer distances.

Plus with a variable scope you can dial back the magnification to optimize the FOV and light gathering ability of the scope and still be usable when shooting close in.

Hope this helps.

- Dave
Reply With Quote
  #6  
Old 01-12-2014, 11:03 AM
Platinum Member
 
Join Date: Feb 2007
Location: Townsend, Montana.
Posts: 7,764
Re: Please help with NFORCE NSX Set-up

Dave, I am not doubting this at all. But it makes me want to ask what scopes you use and notice this visual difference in?

I have used zero, 10, 20, 30, 40, and 65 moa rails and have never noticed a difference in the field of view when dialing even within 1 or 2 moa from the end of my elevation travel. At least not in my NXS scopes or ATACR's. A while back I dialed the ATACR to 119 moa for a 2971 yard shot. I noticed no difference in the view and was only a few moa from its max elevation. I am just curious if I am missing something or if it is not as big of an issue with a Nightforce NXS or ATACR?

Thanks
Jeff
__________________
Reply With Quote
  #7  
Old 01-12-2014, 12:05 PM
Silver Member
 
Join Date: Dec 2008
Posts: 198
Re: Please help with NFORCE NSX Set-up

Quote:
Originally Posted by Broz View Post
Dave, I am not doubting this at all. But it makes me want to ask what scopes you use and notice this visual difference in?

I have used zero, 10, 20, 30, 40, and 65 moa rails and have never noticed a difference in the field of view when dialing even within 1 or 2 moa from the end of my elevation travel. At least not in my NXS scopes or ATACR's. A while back I dialed the ATACR to 119 moa for a 2971 yard shot. I noticed no difference in the view and was only a few moa from its max elevation. I am just curious if I am missing something or if it is not as big of an issue with a Nightforce NXS or ATACR?

Thanks
Jeff
Hi Jeff,

I had a total of 45 MOA on my SS 5-20. It brought it down to with in 5 MILS of bottoming out the scope with a 100 yard zero.

Although the scope is my favorite for color and sharpness of image (No I do not own a s&b or Hensfolt (sp?), etc.).

Here is a link that we discussed what was happening.

40 MOA base with SS 5-20 - The Optics Talk Forums

At the extreme edge the image on the scope was not as crisp as the image in the center of the viewable image. Then by moving the vertical travel to the extreme limits it only had that to use.

Was it usable at 100? Yes.

Was it as good an image as at the middle of the vertical travel? No.

Did the image improve the further I shot, and hence dialed moving 'up' the erector? Yes. That is why I posted what I did.

Hope that explains my post a little better.

After I get back from shooting I will see if I can find a graphic I came across that really did a good job depicting what I am trying to explain.

- Dave
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Current Poll
Are you on Facebook?
Yes - 46.36%
1,116 Vote
No - 19.53%
470 Votes
No, but I may join - 1.79%
43 Votes
No way, are you kidding? - 36.06%
868 Votes
Total Votes: 2,407
You may not vote on this poll.

All times are GMT -5. The time now is 02:38 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC