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

Scope mounting way off!

 
LinkBack Thread Tools Display Modes
  #8  
Old 01-26-2012, 01:27 PM
Silver Member
 
Join Date: Mar 2011
Location: Chicago, IL
Posts: 102
Re: Scope mounting way off!

Quote:
Originally Posted by Loner View Post
Which millet rings? The ones that come with the scope? If they are the lrs-1 tacticool
rings there is no adjustment for windage error with the rings. Flip them around and see
if you are off the other direction. If not it's the rail or your holes in the reciever that are
off. Provided the scope is good. You have some trouble shooting to do.
First swap the rings around backwards, leave the scope settings alone. If nothing changes it's not the rings. ( you can just bore site if it's off more than a couple of feet to check this, no trip to the range needed)

next Center the windage dial on the scope and try it on a different gun. If it's close
Your base or reciever is off.

They are the rings that came standard with the scope. I mounted the scope on a bench vise and the turrets seem to adjust properly. The rifle is in pieces as I'm changing out some parts currently. Once it is all together I'll try reversing the rings and see if that helps.

I'm also having a custom scope ring alignment/lapping tool made. It should be ready in a week or so. I'll keep you all posted with the results.

Thanks for the info so far!

T
Reply With Quote
  #9  
Old 02-29-2012, 04:10 PM
Silver Member
 
Join Date: Mar 2011
Location: Chicago, IL
Posts: 102
Re: Scope mounting way off!

Update...

So I finally assembled my rifle as my upgrades were done. I threw the scope back on... realigned the rings... reinstalled the base... torqued everything down to proper specs...

Using the length of my shop as a makeshift "range" I boresighted the rifle targeting the center the shop wall clock. Peering down the scope the crosshairs were sighted about 6" left of the clock and maybe 18" low. This is at about 75 feet approximately. Is this acceptable? Naturally I will adjust windage and elevation turrets to center... but I just don't know if this is close enough to start or not
Reply With Quote
  #10  
Old 02-29-2012, 05:08 PM
Platinum Member
 
Join Date: Dec 2011
Location: S.E. Michigan
Posts: 3,464
Re: Scope mounting way off!

My coment is first off, what is a custom lapping bar? I use centerless ground drill rod in the appropriate diameter. 30mm, 1" or 32mm which ever is applicable.

Centerless ground drill rod is fairly cheap and usually comes in 3 foot lengths so you wind up with plenty of lapping bars. Last time I bought a stick I believe it was 25 bucks and unlike mild steel rounds, the OD is precision, usually parallel within 0.001 and diamterically 0.001 plus it's hardenable (air or oil casehardening).

MSC sells it, Enco sells it, Alro sells it, Contractors Steel sells it.

Anyone who pays for a 'custom lapping bar' is not informed. No offense, it's just so much cheaper to be informed. Likewise with lapping compound. Midway sells it in nice convenient tubes but so does MSC and Enco, is nice tin cans ir more than you'll ever need.

I'd line up the rings by fitting the rings loosely on the rail, then slipping the bar through both rings and then toequing the rings to the bar itself and then rotquing the rail mount fasteners, in that order. The I'd loosen the tube mounts, pull the bar, apply dykem blur (or red) to the inner diameters of the rings, slide the bar back in snug the rings and rotate the bar. The loosen the tube mounts and pull the bar and note how the Dykem was removed by the bar. That will rell you if the rings are in alignment and it there are high spots.

If the rings are true and the Dykem is rubbed off evenly, I'd be looking at the rail, the receiver/rail mounting holes or the rail to receiver torque.

If I misspelled some words, excuse me, I'm a temporary gimp. Tipped a tendon in my haqnd....
Reply With Quote
  #11  
Old 02-29-2012, 05:15 PM
Silver Member
 
Join Date: Mar 2011
Location: Chicago, IL
Posts: 102
Re: Scope mounting way off!

Sidecar... allow me to elaborate... I'm having a lapping bar made for me by a friend who is a machinist. I paid 35$ for the metal... he's turning it for free... in the end I'll have a lapping bar that is precise.. built exactly how I want it... for a quarter of the cost of buying the 35mm lapping kit kit. In addition... he's cutting off two lengths from the overall rod to make the plumb bobs that fit in the individual rings to check alignment... I'm not uninformed. Rather going about it a cheaper and better way. I simply didn't feel it necessary to explain that in the first place.
Reply With Quote
  #12  
Old 02-29-2012, 07:20 PM
Platinum Member
 
Join Date: Dec 2009
Location: NW MT
Posts: 2,651
Re: Scope mounting way off!

Dial in on the clock, look at where turrets are, then adjust to top, and windage and see what you have left, this will give you a good idea. If you are already near top, for instance, then more moa base, etc. for windage
Reply With Quote
  #13  
Old 02-29-2012, 10:46 PM
Bronze Member
 
Join Date: Feb 2012
Location: wichita ks
Posts: 85
Re: Scope mounting way off!

as a matter of fact i just went threw my scope rings with my home made lapping tool,a piece of drop from our lathe,or mentioned earlier a piece of drill rod,drilled and tapped a hole in it about half way down and kabam! a lapping tool, stopped at autozone got a tube of valve lapping cream for a few bucks. i mounted my rings on my lapping tool first then set the whole schbang on the base and tightened it up, take the caps off, add a little cream, put the caps back on, tighten untill you can just bearly move it then give it a good "hand job" back and forth with a little twisty action. when it free's up adjust the screws a tick and jack it again, then when your done,wipe up your cream and roll over and go to sleep! really it isnt very hard, and if your rings are off very much it will show up really quick.
Reply With Quote
  #14  
Old 02-29-2012, 10:55 PM
Bronze Member
 
Join Date: Feb 2012
Location: wichita ks
Posts: 85
Re: Scope mounting way off!

Quote:
Originally Posted by BigDaddyKane View Post
Sidecar... allow me to elaborate... I'm having a lapping bar made for me by a friend who is a machinist. I paid 35$ for the metal... he's turning it for free... in the end I'll have a lapping bar that is precise.. built exactly how I want it... for a quarter of the cost of buying the 35mm lapping kit kit. In addition... he's cutting off two lengths from the overall rod to make the plumb bobs that fit in the individual rings to check alignment... I'm not uninformed. Rather going about it a cheaper and better way. I simply didn't feel it necessary to explain that in the first place.
just make sure that your idea and his idea of "precise" are the same, i mean his might be+/- .002 from end to end, yours might be +/-.0002. good luck
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Scope mounting way off!
Thread Thread Starter Forum Replies Last Post
mounting a scope to a 22 silverado Long Range Scopes and Other Optics 1 09-23-2011 05:05 AM
Scope Mounting on Win M70 EW Byrnsey Rifles, Bullets, Barrels & Ballistics 4 09-12-2011 09:55 PM
Mounting my scope? MaverickMa Long Range Scopes and Other Optics 9 12-15-2006 04:26 PM
Mounting a Scope Ramses II Long Range Scopes and Other Optics 6 02-16-2005 07:06 PM
Mounting a scope on an M1A Point Man Long Range Hunting & Shooting 1 11-05-2004 06:04 PM


All times are GMT -5. The time now is 09:51 AM.


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