December 30th, 2020

Signature Rings — Find True Elevation Change of Inserts

Burris signature rings inserts

Burris Signature Rings with polymer inserts are an excellent product. The inserts allow you to clamp your scope securely without ring marks. Moreover, using the matched offset inserts you can “pre-load” your scope to add additional elevation. This helps keep the scope centered in its elevation range while shooting at long range. Additionally, with a -20 insert set in the front and a +20 insert set in the rear, you may be able to zero at very long ranges without using an angled scope base — and that can save money. (To move your point of impact upwards, you lower the front of the scope relative to the bore axis, while raising the rear of the scope.)

Burris Signature Rings

Insert Elevation Values and Ring Spacing
People are sometimes confused when they employ the Burris inserts. The inset numbers (-10, +10, -20, +20 etc.) refer to hundredths of inch shim values, rather than to MOA. And you need the correct, matched top/bottom pair of inserts to give you the marked thousandth value. Importantly, the actual amount of elevation you get with Burris inserts will depend BOTH on the insert value AND the spacing between ring centers.

Forum member Gunamonth has explained this in our Shooters’ Forum:

Working with Burris Signature Rings
Burris inserts are [marked] in thousandths of an inch, not MOA. To know how many MOA you gain you also need to know the ring spacing. For example, with a -20 thou insert set in the front and a +20 thou insert set in the rear, if the ring spacing is 6″, the elevation change will be approximately +24 MOA upwards.

Here’s how we calculate that. If you have a 2 X 0.020″ “lift” over a distance of 6 inches (i.e. 0.040″ total offset at 0.5 feet) that’s equivalent to 0.080″ “lift” over 12 inches (one foot). There are 300 feet in 100 yards so we multiply 0.080″ X 300 and get 24″ for the total elevation increase at 100 yard. (Note: One inch at 100 yards isn’t exactly a MOA but it’s fairly close.)

Here’s a formula, with all units in inches:

Total Ring Offset
——————– X 3600 = Change @ 100 yards
Ring Spacing

(.020 + .020)
—————– X 3600 = 24 inches at 100 yards
6

NOTE: Using the above formula, the only time the marked insert offset will equal the actual MOA shift is when the center to center ring spacing is 3.60″. Of course, you are not required to use 3.60″ spacing, but if you have a different spacing your elevation “lift” will be more or less than the values on the inserts.

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October 12th, 2020

Burris Signature Zee Rings — Good Value, Great Functionality

Burris Signature Zee rings

Burris Signature Zee ringsMore and more folks are using Burris Signature Rings these days. These unique rings feature polymer inserts. That allows you to pre-load some elevation in your scope set-up, or you can center-up the windage. Additionally, the polymer inserts hold your scope securely without leaving marks on the tube. And many folks believe Signature rings may offer advantages for benchrest competition. Rodney Wagner shot the then-smallest 600-yard group in history using Burris Signature Zee Rings (“Zee” denotes the Weaver-rail model). James O’Hara set multiple IBS 1000-yard records using Burris Signature Zee Rings. James will tell you he thinks “all his guns seem to shoot best with these rings”.

Records Have Been Set with Signature Zee Rings
Are Signature Zees good enough for competition? Absolutely. Some folks scoff at these Burris rings, given their low price ($36.40 for 1″ Sig Zees at Midsouth). But consider this, in 2013 Rodney Wagner shot a world record 0.336″ 5-shot group using Signature Zee Rings on his IBS Light Gun. That still stands as an IBS Light Gun 600-yard record, though in 2018 Bart Sauter nailed a 0.311″ Heavy Gun group at 600. Here’s a photo of Rodney showing the record-setting rifle, outfitted with Signature Zee 30mm rings.

Signature Zee Rings Burris

Vendors Have Burris Signature Rings in Stock Now
Various models of Burris Signature Rings are available currently from many vendors. NOTE: You may have to check with more than one seller to get the exact size, height, and model you prefer. But right now these vendors have pretty good selections of Signature Zees, including the popular 30mm High and Extra High models. If you check all three sellers, you’ll probably find what you need.

Midsouth has a good inventory of Burris Signature Zee Rings in stock now:

1″ High Signature Zee ($36.40) 1″ Medium Nickle Signature Zee ($36.40)
30mm High Signature Zee ($50.70) 30mm Extra High Signature Zee ($50.70)

Midsouth Shooters Grafs.com MidwayUSA

Signature Zee Rings Burris

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