I am going to mount a sightron III 6-24x50 on an AA upper I have on order. The scope has 100 moa internal adjustment. Can anyone tell me what height rings I should be considering?
Also:
I see that AA sells a 20 moa base. Should I be considering this? I do not have access to more than 1K yards.
Posts: 4,444
Threads: 97
Joined: Mar 2011
bwaites Wrote:Easy, there is no real argument:
http://stores.homestead.com/Laruetactica....bok?no=30
Bill Thanks Bill.
They are pricey. Are they really that much better than say $50 weavers? I mean : what makes them better after initial mounting?
Posts: 1,685
Threads: 55
Joined: Mar 2011
davidj Wrote:Thanks Bill.
They are pricey. Are they really that much better than say $50 weavers? I mean : what makes them better after initial mounting?
Aside from getting the proper height and eye relief for an AR platform, they return to zero extraordinarily well. Other brands do it well too, such as Bobro and ADM, but like LaRue, they are not cheap.
If you have no intentions of removing the scope to use BUIS, traditional rings will likely serve you fine. But you'll probably need extra-high rings unless you use some type of riser, and try to avoid mounting a front ring on the handguard instead of the upper receiver.
You'll need ~40-moa of elevation over a 200-yard zero to shoot out to 1000 yards.
Drifter
I'm kinda partial to Nightforce and Badger Ordnance rings myself. But Larues are an excellent choice, too.
Posts: 4,444
Threads: 97
Joined: Mar 2011
Nightforce rings are great as well, and I have no experience to Badger to compare them.
However, the Larue's simply WORK for AR's. I have one set that is more than 4 years old, and they have been off and on my Grendel, my Grendel has been shipped cross country and back, then the Larue and Nikon put back on, and the zero is the same.
But to me the real test was swapping rifles. I set the zero for the Grendel, swapped it to a .308, ran it on that for 6 weeks or so, then put it back on the Grendel, set the turrets to the Grendel settings, and "BOOM" dead center bullseye.
I can't see how it gets better than that.
Yes, they are spendy, but "Buy once, cry once" has become a motto to me!
Bill
I have an S3 6-24 mounted on my 300 OSSM and relegated an equal quality scope, my Bushnell Elite 4200 6-24x40 to the Grendel. On those two and my other two AR platform uppers, I use a pair of YHM risers and a set of Burris Signature Zee rings with their gimble-like inserts. They don't mar the scope and provide a solid mount. No,they're not tacticool, but I swear by them. If your intended use exceeds the elevation adjustability of the scope, you can get offset inserts up to I believe +20 MOA. I haven't shot mine in that capacity, so I just use the zero offset inserts. With the YHM risers, either the medium or high Zee rings will give you ample cheek weld on the stock depending upon your facial layout, with plenty of objective clearance to spare. For less than $75.00, they are a good solution for my particular income bracket. The pair on my 450 Bushmaster withstand a strong recoil impulse and have held zero for over 720 rounds so far. Both the risers and rings are readily available and if you watch you sales, you can get your cost even lower. Just my humble opinion.
Hoot
RStewart Wrote:I'm kinda partial to Nightforce and Badger Ordnance rings myself. But Larues are an excellent choice, too.
Put Warne Maxima rings in there too, they make damned good rings, however with the need for the elevation required that narrows the choices.
Probably the best mounts and rings in the world are made by Marty at Badger, you will also be shelling out some serious cash.(you already knew that)
The worst rings I have are a set of Leupold but that is on an FAL and allows me to see through so I COULD use the irons if I HAD to.
In reality I might just stick a set of Warne's on that if something should ever happen to the scope or rings.
Posts: 3,340
Threads: 46
Joined: Mar 2011
davidj Wrote:I am going to mount a sightron III 6-24x50 on an AA upper I have on order. The scope has 100 moa internal adjustment. Can anyone tell me what height rings I should be considering?
Also:
I see that AA sells a 20 moa base. Should I be considering this? I do not have access to more than 1K yards.
DJ:
Yes, you need to consider the 20 MOA base. You will suck up around 70 - 80 minutes just to get a 100 yard zero and what is left on your optic won't go very far. My bet is you will suck up 80 minutes and barely have enough left for 600 yards.
Get the 20 MOA base.
LR1955
I would like to thank all of you for your thoughtful input. I finally went with the LaRue.
Gents,
Just for future reference, LaRue does make a 20 MOA cant 1-piece base scope mount for the AR called the LT-112. It's a great mount really, but isn't listed on their site. You just have to ask for it.
LRRPF52
Posts: 4,444
Threads: 97
Joined: Mar 2011
LRRPF52 Wrote:Gents,
Just for future reference, LaRue does make a 20 MOA cant 1-piece base scope mount for the AR called the LT-112. It's a great mount really, but isn't listed on their site. You just have to ask for it.
LRRPF52
I wish I had known this before I mounted my NF on my Grendel I have 20 MOA rail for the top of the picatinny, and then mount the SPR on it, but this would be a much better solution!
I still have a new SPR 1.5 if someone wants to work a deal!
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. - John Galt
bwaites Wrote:I wish I had known this before I mounted my NF on my Grendel I have 20 MOA rail for the top of the picatinny, and then mount the SPR on it, but this would be a much better solution!
I still have a new SPR 1.5 if someone wants to work a deal!
If it is new and unused, call LaRue. The let me exchange a new mount for another model. I now have GG&G mounts on all my AR rifles as I do not like the way the cam digs into the upper receiver on the LaRue mounts.
Bill you could always sell both of those and get a Badger rail with 22 MOA
MrSurgicalPrecision
Unregistered
LR1955 Wrote:DJ:
Yes, you need to consider the 20 MOA base. You will suck up around 70 - 80 minutes just to get a 100 yard zero and what is left on your optic won't go very far. My bet is you will suck up 80 minutes and barely have enough left for 600 yards.
Get the 20 MOA base.
LR1955
Now wait a minute, I've used a Bushnell Elite 3200 10X with 80 MOA of adjustment and no angled base to shoot out to 1000 yards with 2 different 6.5 Grendels. The second one fell short of having enough elevation by 4 MOA. I'm not saying the 20 MOA base is a bad idea, just saying it may not be necessary. BTW both rifles were shooting 24" tubes and handloaded 123 SMKs. One was a Satern barrel and the other a Sabre.
Madmax,
Sometimes the mounting configuration of rings, bases, and barrel orientation can stack up for a ton of MOA adjustments that work against your ability to dial for any more usable elevation for your trajectory. If your rifle has a generally great mechanical zero as far as barrel/receiver/scope mounts is concerned, you will need less elevation to adjust to your zero. This is another benefit of trued actions and barrel threads.
Another problem, even if you barely have enough elevation to get to your farthest intended distance, is the windage adjustment that will no longer be able to be dialed for significant wind-drift since your erector tube is bottomed-out against the inside of the scope tube body.
Another important thing about this is keeping your scope as close to optical true as possible, which is the case when your erector tube with its lenses is centered with the objective and ocular lenses of the scope body. Deviation from the scope tube center actually warps the increment marks in many scopes, from what I understand, so it is a generally-accepted caveat among long-range shooters that MOA canted bases are the best way to go.
Hopefully, with whatever optic you own, you will not even get close to your maximum elevation adjustment for this reason, which is why the extreme long-range tube bodies are often offered in 34mm and 35mm. Hope this explanation helps...
LRRPF52
|