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Best Rings for AR-50A1?

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Scylla View Drop Down
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    Posted: June/03/2011 at 19:28
What are the best rings for use with a NightForce 5.5X22X50 scope to be mounted on an Armalite AR-50A1?
I am new at .50 BMG shooting and will appreciate your responses.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Kickboxer Quote  Post ReplyReply Direct Link To This Post Posted: June/03/2011 at 19:44
You might take a look at the new Aadland rings.  They are aluminum, but appear well engineered.  They look better than the Nightforce rings and have a greater gripping surface.  SWFA sells them.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Scylla Quote  Post ReplyReply Direct Link To This Post Posted: June/03/2011 at 19:58
Thanks for your reply. I also am taking a look at the Barrett Zero-Gap rings (ultra high) and LaRue Tactical's LT107 QD outfit.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Kickboxer Quote  Post ReplyReply Direct Link To This Post Posted: June/03/2011 at 23:40
All nice.  338LapuaSlap got some of the Barrett's and loves them.  You should also give Near Mfg a look.  The Alphamount is outstanding...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Scylla Quote  Post ReplyReply Direct Link To This Post Posted: June/03/2011 at 23:48
I also have been urged by a pal to consider the Barrett BORS system, which also requires Barrett rings. Now we are talking some very serious money!
 
I will look at the Near Alphamount.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Kickboxer Quote  Post ReplyReply Direct Link To This Post Posted: June/03/2011 at 23:59
My opinion on the BORS... it's an awful pricey piece of gear for something you can have in a PDA for a lot less money.  It is not as "high tech" as I expected it to be.   It's nice, just not indispensable.  It does provide some freedom, but is also heavy.  Lots of tradeoffs to consider before plunking down the dollars for that piece of gear.  I opted out on it.  
I love the tech stuff, but it's just not THAT good...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Scylla Quote  Post ReplyReply Direct Link To This Post Posted: June/04/2011 at 00:03
Thanks for that feedback, Kickboxer.
Another question: I had been told that I ought to get ultra high (1.4") rings (in Zero-Gap rings) for the NightForce 5.5-22X50 scope. Is that correct? Someone else said to get the high (1.3") rings.
 
Whatever rings I finally buy, I want to be sure they are the correct height as I want to get the scope mounted and get out and SHOOT.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Kickboxer Quote  Post ReplyReply Direct Link To This Post Posted: June/04/2011 at 00:07
I have a Hensoldt 6-24x72 with a 1.4inch ring height and possibly could have gone with the next lower size... you can go considerably lower than that.  


check this out:

http://www.opticstalk.com/how-to-determine-proper-ring-height_topic5946.html


Edited by Kickboxer - June/04/2011 at 00:14
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Post Options Post Options   Thanks (0) Thanks(0)   Quote www.technika.nu Quote  Post ReplyReply Direct Link To This Post Posted: June/04/2011 at 01:00
I don't have any experience at all from that rifle so I don't know.
From looking at the pictures of the gun, it feels like the lower the mount the better it is.
 
Håkan
 


Edited by www.technika.nu - June/04/2011 at 01:01
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dsr Quote  Post ReplyReply Direct Link To This Post Posted: June/04/2011 at 12:27

Scylla,

I would recommend Badger, Nightforce, Barrett, all of those rings with a caveat.  What I have ended up using is the Armalite one piece base because the rifle is so big and heavy and single piece base is very easy to mount and unmount for transportation.  What I have heard from a fellow FCSA shooter was that he sent his rifle via UPS in an aluminum hard case and was received with a dent from the bolt handle protruding outward in the case top from rough handling.  Now I know that you would not do such a thing but the point that I am making is the inertia of a 30 lb plus rifle is really more than the foam of a hard case can handle and I don’t want to subject my optics to such potential damage.  If you decide on the Armalite single piece base I would strongly recommend a good lapping kit and when finished lapping permanently marking the alignment of the pieces.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jon A Quote  Post ReplyReply Direct Link To This Post Posted: June/04/2011 at 14:58
I agree with Håkan, I don't see why you'd need super high rings unless that cheekpiece doesn't adjust downward at all.  Does it adjust down much?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Scylla Quote  Post ReplyReply Direct Link To This Post Posted: June/04/2011 at 16:41
The cheekpiece has considerable adjustment, up and down, and I prefer the lowest cheek weld possible.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jon A Quote  Post ReplyReply Direct Link To This Post Posted: June/04/2011 at 17:11
In that case I'd recommend a set of medium-ish rings around the 1" height just to get you enough above the rail and then set the cheekpiece where it's comfortable.

Of course I'd use my rings, but that's just me....        Bandito      No need to lap them unless you're rail is crooked.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote www.technika.nu Quote  Post ReplyReply Direct Link To This Post Posted: June/04/2011 at 23:47
I would go for a unimount on this.
The gun have a 15 moa rail, while the scope can accept up to 40-50 moa rail.
If you take a 20-30 moa unimount and put there, you get those 20-30 moa additionally.
 
A lot unimount, and straight without cantilever would be perfekt.
 
Håkan
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Amen Firearms Quote  Post ReplyReply Direct Link To This Post Posted: April/04/2019 at 10:17
I have a customer's Armalite AR50AI here, along with a Vortex Viper6.5-20x50 scope, and Vortex Tactical 30mm High rings. Problem is, I mounted the rings, and scope, and can't dial the scope Down enough to get even close to a 100, or 200 yard zero. Shouldn't the scope have enough dial be able to overcome a 15MOA base? Also, there is definitely room for lower rings, but I'm not sure if that difference is enough to get this rifle on paper?
Thanks for any advice, in advance.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rancid Coolaid Quote  Post ReplyReply Direct Link To This Post Posted: April/05/2019 at 09:06
Cannot dial it down enough? That is the opposite of what a canted base does.

If your scope is indeed maxed out at the bottom of the adjustment range, something is very wrong.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote supertool73 Quote  Post ReplyReply Direct Link To This Post Posted: April/05/2019 at 10:00
Aren't you backwards Rancid.  A canted base takes from the bottom and gives you more at the top end of the adjustment range.  Add that to the huge amount that it would be mounted above the bore on that rifle and I could see it being an issue. 

I had a 30 MOA base on a rem 700 .308 with an IOR and at my 100 yard zero I had 1.5 MOA above the bottom of my adjustment range

That scope only has 65 moa of total adjustment range.  That is not a lot considering you have to overcome that huge gap from center bore line to scope.

The biggest question I have, is why a 100 or even 200 yard zero on a .50?  Thats like buying a Ferrari to only drive in residential speed zones. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rancid Coolaid Quote  Post ReplyReply Direct Link To This Post Posted: April/05/2019 at 10:31
Assuming a centered rifle scope, adding a canted base would have your point of impact go down, so you would click up to adjust, right. That gives you more down clicks for elevation changes at range. Unless I misunderstood him, he said he could not dial down enough, so he is bottomed out, meaning all clicks are up clicks, which are elevation changes that would bring the muzzle down, therefore take range from the setup, and not give to.

Or have I had too much coffee this morning?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote supertool73 Quote  Post ReplyReply Direct Link To This Post Posted: April/05/2019 at 10:41
A 15 MOA sloped base raises the back of the base, doesn't it?  So that would make the line of sight of the scope point down towards your barrel.  Which in turn would raise your POI by 15 MOA because it makes your line of sight and the line of bullet travel coincide sooner. 

And if I am thinking completely wrong, then I apologize.  I have been trying to figure out general ledger accounting crap this morning and my brain hurts. 


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rancid Coolaid Quote  Post ReplyReply Direct Link To This Post Posted: April/05/2019 at 11:21
Exactly, and to again shift the POA to match to original POI (15MOA below the new POA, you would move the reticle UP to match. Moving the reticle up moves the muzzle down. Those up clicks are now available as down clicks for elevation changes at longer distances.

Amen above says he has a 15MOA base and no down clicks left. Or that is how I interpreted his post. And I could be wrong. And if so, will switch to decaf.
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