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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/18/2011 at 06:11
Ted_Nugent007 View Drop Down
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sighting in my ar 50 ran out of down elevation shooting around 100 yrd's too start with have any of you heard of shiming a scope base?
 
ARMALITE AR-50
SCOPE NIKON MONACH 4 x 16 x 42 W/SIDE FOCUSLoco 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/18/2011 at 06:36
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were you using a 20moa base already?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/18/2011 at 07:23
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STOCK ARMALITE PICT BASE WITH WITH SHORT RING BASES  MAN I PULLING MY HAIR OUT
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/18/2011 at 07:37
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My suggestion would be get another scope with more internal adjustment, or a 20MOA base for it.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/18/2011 at 07:55
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thankyou sir we will look into Cheers
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/18/2011 at 08:28
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something is wrong that this scope runs out of adjustment just getting a 100yard zero, not sure whether its the rings, scope, or base. I would try to solve your problem first, then get another scope.
 
On that note 40MOA of adjustment with this scope is kinda on the minimun side of adjustment if you plan on shooting any kind of distance. Just assume that leaves you somewhere around 20MOA to play with if you had a flat base or if you put a 20MOA base on it (give you another 20MOA to play with) you may not even be able to zero it assuming your other problems were fixed.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/18/2011 at 08:31
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Chief Sackscratch

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Originally posted by SVT_Tactical SVT_Tactical wrote:

My suggestion would be get another scope with more internal adjustment, or a 20MOA base for it.
I miss read your original problem as getting out not down..... sorry.  A 20MOA base would increase the problem.  a scope with more adjustment would still fix it though.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/18/2011 at 08:59
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Originally posted by SVT_Tactical SVT_Tactical wrote:

Originally posted by SVT_Tactical SVT_Tactical wrote:

My suggestion would be get another scope with more internal adjustment, or a 20MOA base for it.
I miss read your original problem as getting out not down..... sorry.  A 20MOA base would increase the problem.  a scope with more adjustment would still fix it though.


Maybe.


Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/18/2011 at 22:07
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The armalite ar 50 has an integral 20 moa rail, so your scope is running out of adjustment because of this.  Simple fix...just need to buy a scope with more adjustment like SVT said. 
The Nikon is a decent scope, but I'm pretty sure it only has a total of 40 moa....

Or you could get some burris signiture zee rings.....don't know how they would hold up on the .50, but the one my friend has doesn't seem to have a bad recoil.




Edited by GetSome - February/18/2011 at 22:13
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The Nikon 4-16x42 is, even with a mil-dot reticle, a hunting scope.  It is not designed to mount on a tactical rail...  If anything, it is designed for holdover using the reticle.  It clearly does not have enough adjustment for mounting on a 20MOA rail.  Shimming a scope on an "extreme" rifle (.50) (or any rifle for that matter) is never a good idea... even if it happens to work.  I think, to be on the safe side (where you always want to be) you need a scope with a minimum of 60MOA adjustment in elevation.  You didn't tell us how far off you are in obtaining zero.  
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/24/2011 at 10:07
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It is not unknown to shim a rail, I have several setups where I shimmed the rear of the rail in order to make the rifle zero and the scope zero equal out in order to have the complete adjustable range be positive and the return to zero be exactly all of the way down.

That said, Just how far off of zero is it when it is all of the way down and at what range?  Being a 50 BMG it was never really intended for shots much under 300yd.  If you can get it to zero at 200 or 300 yards, just do that and use your reticule to extimate at closer ranges.

In other words if it is right on @ 300 and you have  a 2-3" drop or rise at 100, just go a bit high or low.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/24/2011 at 20:11
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Ted_Nugent007,

I believe that the AR-50 ships with the 15 minute base installed. Check the ends (front or back) of the base for the angle.  It will be marked 15, 30 or 50 (I somewhat remember a 20 not sure if I ever saw one).  From your post it is not clear what rings you are using.  I have had problems with rings that were made by a casting process in getting them to align well (used too much scope adjustment to zero for my liking).  As for shimming the base I am not sure how well it will work because the bases for the AR-50 have integral recoil lugs that fit into the receiver.  I think your best bet will be to check your rings.  Your scope has marginal adjustment if you are using the 15 minute base and your rings align perfectly.

 

Good luck – post when you find your solution.

 

dsr

 

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/25/2011 at 22:47
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WELL I THINK I FOUND WHY I RAN OUT OF DOWN ELAVATION ON MY ARMALITE AR-50 CAL THE RIFLE IS SUPPOSED TO COME WITH A 15 MIN PIC RAIL AFTER PULLING MY HAIR OUT AND THINKING WHAT IN THE WORLD IS GOING ON I GOT LOOKING AT THE RAIL IT IS STAMPED 50 ON THE RAIL SO I CALLED ARMALITE AND TOLD THEM MY PROBLEM OF RUNNING OUT OF DOWN MOA ON MY NIKON MONARCH 4X16X42 I ASKED HIM ARE'NT THEY SUPPOSED TO COME WITH A 15 MIN RAIL HE SAID YES! DUH THAT IS THE PROBLEM THE 15 MIN RAIL IS FOR 0 TO 1000 YRD'S AND THE 50 MIN IS FOR UP TO 2000 TO 3000 YRD'S SO THEY ARE SENDING ME A 15 MIN RAIL WITH FINGER'S CROSSED I HOPE THAT THIS WILL SOLVE MY PROBLEM LocoWhacko

Edited by Ted_Nugent007 - February/25/2011 at 22:51
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2011 at 09:11
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That should help.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2011 at 11:27
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Yours is one of few rifles with any accessories for 2000-300 yard shots.

The 15MOA will solve the problem.  Probably.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2011 at 11:37
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Might "NEED" one of these for the AR50.
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/09/2011 at 17:27
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I am having this same problem with a ar50 with the 15moa rail in it. The scope is a leopold mk4 sitting in burris extreme tactical rings. The scope elevation turret is bottomed out and the gun is still shooting 5 inches high at 50 yards and around 10 or 11 inches at 100 yards. It seems like the idea is that a scope with more internal adjustment is needed but how will this help is the turret is bottomed out adn the gun is still shooting high?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/09/2011 at 17:35
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WHY???

50???

100???

Not to be rude but WTH are you shooting it so close for, you could take your side arm and make hits at that distance...

GO ARMALITE 50MOA base out of the BOX woohoo...

Start at minimum of 500YRDS please.  For the sake of logic...

100 YRD for Zeroing scope for mounting doesn't even make much sense to me...  Even with the bigger bore it seems to be easy to bore sight the 50 at 200-300 without much difficulty...


Edited by 338LAPUASLAP - April/09/2011 at 17:39
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/09/2011 at 17:43
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Originally posted by 383chevelle 383chevelle wrote:

I am having this same problem with a ar50 with the 15moa rail in it. The scope is a leopold mk4 sitting in burris extreme tactical rings. The scope elevation turret is bottomed out and the gun is still shooting 5 inches high at 50 yards and around 10 or 11 inches at 100 yards. It seems like the idea is that a scope with more internal adjustment is needed but how will this help is the turret is bottomed out adn the gun is still shooting high?

Get rid of the 15 moa rail that will raise your shot 15 inches at 100 yards. If you want to shoot at 100 yards. Or get a scope with more internal adjustments.

Technically it is topped out not bottomed out. You raise the retical to point the barrel down.

More internal adjustment is both up and down from the middle. So it would give you more clicks to lower your poi.

When I first read this I was thinking of an ar 50 a 50 Beowulf. 




Edited by 308 Sav - April/09/2011 at 17:54
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/09/2011 at 19:00
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1st, get a different scope...


AND FIND A SMALLER FONT...


Edited by Kickboxer - April/09/2011 at 19:01
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/09/2011 at 19:36
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Shocked It is interesting seeing the advise given:  To anyone who thinks shimming a scope base on a 50 BMG is a good idea please see your psychiatrist your meds are not strong enough.  Next when people use really large case lettering it comes across like they are screaming so unless you really need it due to poor eye sight just use the standard size lettering.   A guy with a 50 BMG really needs a TOUGH scope and since the military bought the 10x HD Super Sniper I would suggest that to you.  I have one and it has a LOT of internal adjustment.   I understand how perplexed some of our long range shooters are when you talk about setting a zero at 100 yds or even Eek 50 yds these rifles are most often zeroed at 600 yds or 1000 yds so at six dollars a bullet I also kind of wonder what you plan to shoot at 50 or 100 yds with a 50 BMG and if you really understand the balistics of the cartridge well enough to realize that it shoots through stuff and keeps going a long long way.  The potential for unintended damage to property or persons way behind your target exists so you really need to understand what this cartridge is capable of when shooting it, please be careful.  
 
SWFA SS 10x42 Tactical Riflescope Mil-Dot SWFA SS 10x42 Tactical Riflescope
Stock # - SS10X42HD
  • Matte
  • Mil-Dot
  • 30mm
  • Rear Focus
  • OK for .50 cal
  • .10 Mrad
  • HD Model
$799.95
http://www.samplelist.com/TradeInForm.aspx    <========<<<< link to trade in a scope toward another one.

Edited by Urimaginaryfrnd - April/09/2011 at 19:47
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NOTE:  the rail alone will not solve your problem 40moa is not enough. Many tactical scopes have 100 moa or more internal adjustment. Other scopes that would be a good choice for that rifle are:
Sightron 16x42 SIII 30mm Riflescope Sightron 16x42 SIII 30mm Riflescope
Stock # - SIII16X42MMD
  • Matte
  • Modified Mil-Dot
  • 30mm
  • Rear Focus
  • Target Knobs
$549.95
Leupold 4.5-14x40 Mark 4 LR/T 30mm Riflescope Mil-Dot Leupold 4.5-14x40 Mark 4 LR/T 30mm Riflescope
Stock # - LEU56130
  • Matte
  • Mil-Dot
  • 30mm
  • Long Range
  • Side Focus
  • Target Knobs
$879.95
Leupold 4.5-14x50 Mark 4 LR/T 30mm Riflescope TMR Leupold 4.5-14x50 Mark 4 LR/T 30mm Riflescope
Stock # - LEU60005
  • Matte
  • Tactical Milling Reticle
  • 30mm
  • Side Focus
  • M1 Target Knobs
  • Free Leupold Flip-Open Lens Covers w/ Purchase
$1,199.95
US Optics 3.2-17x44 SN-3 30mm Riflescope US Optics 3.2-17x44 SN-3 30mm Riflescope
Stock # - USOSN3E
  • Matte Black Type III hard Anodizing
  • Illuminated Mil-Scale GAP Reticle
  • 30mm
  • Low Profile - Rapid Focus Eyepiece
  • 11 Pos Rheostat (Red) Illumination
  • EREK 1/10 MIL Elevation Knob
  • US#3 1/10 MIL Windage Knob
  • T-Pal Left Side Parallax/Focus
$2,589.95
Zeiss 4-16x56 Tactical Hensoldt Telescopic 34mm Sight First Focal Plane Illuminated Mil-Dot Zeiss 4-16x56 Tactical Hensoldt Telescopic 34mm Sight
Stock # - ZEI3302929001
  • Matte
  • First Focal Plane Illuminated Mil-Dot
  • 34mm
  • Target Knobs
  • Side Focus
  • 0.1 MRAD
$3,462.95
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/09/2011 at 20:08
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I had bore sighted it beofre taking it out to shoot for the first time and it was very far off. The gun belongs to my boss and he bought it for investment purposes. I am going to take it out and let it stretch it legs alittle. There are only a couple of places to shoot 1000 yards around here and they are all privately owned. I am going to be taking it out to shoot at 1000 yards but wanted to make sure it was sighted in. I guess I get to tell him that if he wants it to hit at 100 he needs a new scope. I don't think he really cares though since he didn't really buy it to shoot it.

Thanks for the help guys. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/09/2011 at 20:10
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Urimaginaryfrnd
 
The scope that is on the gun is the Leupold 4.5-14x40 Mark 4 LR/T 30mm Riflescope. that is why I don't understand what is happening. Thought that scope would have enough adjustment.
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