Ivey Externally-Adjusting Scope Mounts for Ultra-Long Range Shooting
Stephen Ivey has engineered a set of gimbaled scope rings allowing up to 150 Minutes of Angle (MOA) of elevation. These rings have precision hinge pins front and rear allowing the entire scope to be tilted by a micrometer-controlled cam in the rear. This allows the scope to tilt upwards (in the rear) with the front ring as the axis while both rings remain parallel to prevent scope binding. The rear ring tilts to match the front while a cam pushes it up. Ivey also makes tilting +150 MOA Picatinny riser rails.
Ivey offers two scope-mounting products. First is the RT-150 Ring set (above). This has two, polished 30mm or 34mm 6061-T6 aluminum rings with bases to fit a Picatinny profile or mil-spec 1913 rail with standard 5mm cross slots at 10mm spacing. (Weaver installation requires extra cross-slots to be cut.) Total elevation is +150 MOA. The micrometer adjuster is graduated in true 1 MOA intervals, with 5 MOA of elevation change per rotation. This product costs $525.00 and requires at least 5-1/2″ length mounting base.
The newest product is the MSRR-150MOA Riser Rail, a pivoting 5.75″-long Picatinny-style rail that accepts Weaver-style clamping scope rings. This Adjusts from Zero to +150 MOA and raises the scope 1.45″ from the top of the action. The extra height provides clearance for large objectives when the unit is tilted for a full +150 MOA elevation. Cross slots are 5mm wide at 10mm (.394″) spacing. The $525.00 riser rail is made of 6061 T6 Aluminum hard-anodized black. Clamps are heat-treated steel. The micrometer thimble is marked for 1 MOA gradations, and provides 20 MOA per revolution.
The Ivey products are expensive, to be sure, but they are beautifully machined, and they offer unique capabilities for ultra-long-range shooters. With the +150 MOA units you have enough elevation to shoot at 2000+ yards! We like the idea of using the micrometer to dial within 1 MOA and then just using the scope turrets for fine-tuning. To learn more, visit the Ivey Shooting website, or call Stephen Ivey at (615) 896-9366, or email him at sales [at] iveyshooting.com .
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I have been using the 150 Ring set for 4 years now and no complaints.
I can go from 100 yds. to one mile and back, and use it for all my vert. adjustments. A very well made, useful piece of equipment. Gerry Nordamnn
I would be afraid that they would not keep a zero very well. Plus it looks like it really gets the scope of the rifle by quite a bit. Plus I don’t see the point in spending so much for what you probably don’t need. If you wanted that much elevation adjustment one could assume that you had a rifle capably of shooting beyond a mile. I have 140 min. in my scope and a 20 MOA base. I did some shooting at 1,900 yards last year and used less half of the MOA adjustment that I have so I think that it is over kill. If you needed it because your scope did not have the elevation you wanted you could have used the money you spent on this and put it to a MOA base and a scope that had what you needed. I have never heard of anyone ever needing 200 min. or more to make a shot.
Very nice looking product. I will be giving them a try.
I’ve been using one of these for a year now and was able to get to 3000yds. in South Dakota and 100yds here at home. Repeatabily, qualty, craftsmanship are top notch and I would buy one again. Stephen is a great guy to talk to and learn from.
Hi — Do you ship to Australia?
Tom
Hello!
I am a sports Crossbowshooter from Germany. I shoot a very strong hunting recurve crossbow (Ultimate Survival)
-see-
http://www.wolfszeit.com/administration/hauptframe.htm#Anchor-Dies-21393
In the allied goal of my appearance, it is a Nightforce Varminter 5.5-22×56 with Mildot-Reticle. It is for a crossbow but clearly over-qualified, but is still the major ballistics, especially at distances over 150 meter = 164 yards hardly fair.
The manufacturer of the crossbow “Günter Wetzler” has unfortunately not the 1280 grams = 2.82187 pounds considered heavy rifle scope, thus making the “Wolfszeit-Scope Base”, whose mechanism is based on a strong metalspring, is overwhelmed. Although the manufacturer wants the crossbow Guenter Wetzler build a new prototype ball-bearing, however, is the probably take until this is completed.
The products manufactured by you seem Base Scope of the special requirements of both my heavy crossbow, to be grown and the heavy Nightforce scope.
Like their scope of all my bases IVEY-on MSR 30-150, because the best quick-release fasteners.
The crossbow was pretty expensive and it is very annoying that I can make it still nothing.
Please tell me what would cost me IVEY-MSR 30-150 inclusive of shipping charges to Germany.
Sincerely,
Thomas Denkel
sir could you supply a price to scotland u.k for your 30 mm long range ajustable mounts to fit nightforce
scope on a 50 cal r.p.a rifle your sincerly john rodgers