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October 25th, 2024
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.)
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:
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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
Ring Spacing: 6 inches
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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August 13th, 2023
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.)
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
Ring Spacing: 6 inches
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. |
Share the post "Calculate True Elevation Changes with Burris Signature Rings"
May 8th, 2023
 More 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. Lastly, some folks believe that Signature rings may offer advantages for benchrest competition. Rodney Wagner shot a world-record 600-yard group 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”.
IBS World Record Set with Signature Zee Rings
Are Signature Zees good enough for competition? Absolutely. Some folks scoff at these Burris rings, given their low price. A set of 1″-diameter Sig Zees cost $40.89 at Midsouth. But consider this, in 2013 Rodney Wagner shot the then-smallest 600-yard group in history, a 0.336″ 5-shot stunner, using Signature Zee Rings on his IBS Light Gun. It took five years for a smaller 600-yard group to be shot, a 0.311″ by bullet-maker Bart Sauter, using his IBS Heavy Gun. (See IBS 600-yard Records.) Here’s Rodney with his record-setting rifle, fitted with affordable Signature Zee 30mm rings.
Vendors Have Burris Signature Rings in Stock Now
Various models of Burris Signature Rings are available from many online 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 hard-to-find 30mm High and Extra High models. If you check all three sellers, you’ll probably find what you need.
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July 16th, 2018
At the request of our readers, we provide select “Deals of the Week”. Every Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze, you lose.
1. Creedmoor Sports — Shooting Coats $50 and $100 Off
Hard-holders and position shooters, this deal is for you. Creedmoor Sports has long offered some of the very best American-made shooting jackets. Creedmoor coats have been worn by legions of top shooters including Smallbore, Service Rifle, and High Power National Champions. Now you can enjoy big savings on Custom and Off-the-rack Creedmoor shooting coats. Custom shooting coats are $100 off, while the Original Hardback and Deluxe Hardback are $50 off.
2. CDNN — Colt Competition AR15 Kit, $549.99
The Colt Kit does NOT include barrel, bolt carrier group, charging handle, or magazine.
This affordable Colt AR15 Kit includes upper, complete lower, handguard, and Magpul stock. To this, add your choice of barrel and optic. We like this option because the barrel is so important to accuracy and overall performance. This Colt package costs $549.99. Add a match-grade, finish-chambered barrel from Criterion or Krieger, plus bolt carrier group, and you’re in business. The Magpul PRS stock features a quick-adjustable cheek-piece and butt-plate — allowing you to easily adapt head position and LOP for your discipline of the day. The straight-toe PRS stock works great in a rear bag. This is a good platform for a PRS Gas Gun Division rifle.
3. Grafs.com — Lyman Summer Sale, 10-22% Off Select items
Lyman has brought out some fine products in recent years, tools that offer excellent performance for the price. Now you can get a serious discount on a variety of Lyman products, including the popular Lyman BoreCam, and the Lyman Trigger Pull Gauge, our “go-to” tool for measuring pull weights. Here are some of the best Lyman Summer Sale deals at Grafs.com now:
Lyman BoreCam Digital Borescope — $199.99 (marked down from $229.99)
Lyman Turbo Pro Magnum Tumbler — $69.99 (marked down from $84.99)
Lyman Trigger Pull Gauge — $42.99 (marked down from $47.99)
4. Smith & Wesson — Summer Savings Program, Save $30-50
Not you can save up to $50.00 on new Smith & Wesson revolvers and semi-auto pistols. Now through September 2, 2018, S&W is offering cash back rebates (via prepaid Mastercards). These deals are available from Brownells and other leading online retailers, as well as S&W authorized dealers nationwide. To qualify, submit rebate form via Smithandwessonrebates.com before October 1, 2018. Proof of purchase required.
1) $50.00 Rebate for new M&P Pistol or Performance Center M&P Pistol in calibers 9mm, 40 S&W, or 45 Auto only (excluding M&P SHIELD Pistols).
2) $30.00 Rebate for new S&W or Performance Center Revolver (excluding M&P BG38).
3) $25.00 Rebate for any new SD or SDVE pistol.
5. Grafs.com — Free Precision Mount with Nikon FX1000 Scope
Nikon has a summer promo for its FX1000 scope series. Order a 4-16x50mm or 6-24x50mm FX1000 optic and get a free precision mount. NOTE: This applies to both MOA and Mil versions, regular and illuminated. Even without the free precision scope mount, these FX1000 scopes are a very good value. At $799.99, 6-24x50mm FFP MRAD model is a solid choice for PRS competition. With good glass, lifetime warranty, nice controls, and good reticle options, the FX1000 optics compete well with scopes costing hundreds more. This offer runs through August 26, 2018. OFFER DETAILS HERE. Other vendors may offer this promotion along with Grafs.com.
6. Brownells — Howa Barreled Actions on Sale, Starting at $259.99
Right now, Brownells is running a big sale on Howa Barreled Actions, in a wide variety of chamberings. You may want to pick up one of these barreled actions, which start at $259.99. We like Howa actions — they are smooth, and they feature an excellent two-stage trigger. Howa also offers a unique Mini Action, which is great for a small-caliber varmint rig. Here are some of the Howa Barreled Actions currently in stock at Brownells. NOTE: This is just a partial sample — there are many other varieties:
.223 Rem, 20″ Heavy Barrel, $399.99
6.5 Grendel, Mini Heavy Barrel, $389.99
6.5 Creedmoor, 24″ Heavy Barrel, $399.99
6.5 Creedmoor, 26″ Heavy Barrel, $429.99
7mm-08, Std Cerakote, $579.99 |
7.62×39, Mini Light Barrel, $259.99
.308 Win, 20″ Heavy Barrel, $289.99
.308 Win, 24″ Heavy Barrel, $299.99
.30-06 Sprg, 22″ Sporter Barrel, Cerakote, $349.99
.300 Win Mag, 24″ Heavy Barrel, $279.99 |
7. EuroOptic.com — Leica CRF 2000, $399.00
This may be the best deal we’ve seen on the Leica 2000-B Laser Rangefinder (LRF) with 7-power optic. This unit is rated out to 2000 yards on reflective objects (in real-world use it will laze a deer well past 800 if you can hold steady). The Leica 2000-B features air pressure and temp sensors, on-board inclinometer, plus angle Angle correction with the true hold-over displayed in both MILs and MOA. The compact Leica CRF 2000-B weighs just 6.5 ounces and measures 4.5″ L x 2.25″ H x 1.25″ W. Here’s a verified buyer’s report: “Was torn between the SIG Kilo 2200MR and the Leica. Compared the Leica and a SIG. Leica’s glass blows the SIG Kilo out of the water. Got readings on everything the SIG would read. I’d recommend it.”
8. Amazon — Signature Zee High Rings (with Pos-Align Inserts)
Burris Signature Zees are our “go-to” rings for use with benchrest rifles. Right now Amazon has the 1″-diameter High Sig Zee rings on sale for $37.69 (Black) or $37.39 (Nickel) with FREE shipping. Burris also offers medium height 1″-diameter Sig Zees. The 30mm Signature Zee rings are somewhat more expensive (about $54.00), but still well worth the price in our view. This Editor uses 30mm Signature Zee Rings for his personal 6mmBR rifle. The polymer inserts allow you to pre-load elevation, and also eliminate the need to lap your rings.
9. Amazon — Howard Leight MAX NRR33 Earplugs, $8.22/50 Pairs
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20 Pairs |
50 Pairs |
These Howard Leight NRR33 Max plugs are your Editor’s favorite foam earplugs. Between shooting, motorcycling and mowing lawns, I probably have Max plugs in my ears 2-3 days a week. This is a very good price for a bulk pack of 50 pairs. And if you act soon, you can get free shipping to boot.
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August 24th, 2017
 More 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. Lastly, some folks believe that Signature rings may offer advantages for benchrest competition. Rodney Wagner shot the best 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. A set of 1″-diameter Sig Zees cost just $38.79 at Grafs.com. But consider this, Rodney Wagner shot the smallest 600-yard group in history, a 0.336″ 5-shot stunner, using Signature Zee Rings on his IBS Light Gun. Here’s a photo of Rodney showing the record-setting rifle, outfitted with affordable Signature Zee 30mm rings.
Vendors Have Burris Signature Rings in Stock Now
A quick search of webstores shows that various models of Burris Signature Rings are available 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 hard-to-find 30mm High and Extra High models. If you check all three sellers, you’ll probably find what you need.
Share the post "Burris Signature Zee Rings — Low Cost, High Performance"
August 22nd, 2017
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.)
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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