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July 26th, 2024

How to Adjust Scope Point of Impact with Burris Signature Rings

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
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.

Burris Signature Ring elevation windage change spacing insert

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July 25th, 2024

Sound Level Effects of Muzzle Brakes — Precision Rifle Blog Test

PrecisionRifleBlog.com Cal Zant Muzzle Brake Test Noise Level Decibels Suppressor

A while back, Cal Zant at PrecisionRifleBlog.com did a big muzzle brake comparison test. Along with measuring recoil reduction, Cal’s team recorded sound levels in PRB’s exhaustive muzzle brake field test. In the PRB archives you’ll find comprehensive muzzle brake sound test results, with hard data on 20 different muzzle brakes.

Sound can be a tricky subject, but Cal Zant, the editor of PrecisionRifleBlog.com, presents everything an informed shooter should know about muzzle brake noise in a straightforward and practical way. Most sound tests are measured from the side of the muzzle, in accordance with mil-spec standards, and Cal did that. But he also measured the sound level of each brake from behind the rifle, closer to the shooter’s position. This provides a more accurate indicator of the actual sound levels firearms operators will encounter while shooting.

Muzzle brakes ARE really loud — that’s something most active shooters have observed. But this study finally gives us some hard data and makes objective comparisons. The difference between brakes was quite significant. Some brakes were ear-splitting — more than twice as loud as other brakes tested.

As a bonus, Cal also provides data on how the new Ultra series suppressors from Thunder Beast Arms Corp (TBAC) compare in terms of sound level behind the rifle.

Check out the Test Results: http://precisionrifleblog.com/2015/08/07/muzzle-brakes-sound-test.

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July 20th, 2024

Saturday Movies: Gun Safes — Important Features to Understand

Gunsafe gun safe saturday movies video showcase vault security modular

Today’s Saturday Showcase covers gun safes. Every firearms owner should have a secure, quality gun safe with ample capacity. There are numerous choices in gun safes — but we have one key bit of advice — buy BIGGER than you think you need, because your gun collection will likely grow over time. Also you should consider the fire rating of your safe. There are other key factors to consider, such as wall thickness, lock type, shelf and storage layout, and humidity control. We recommend that all Bulletin readers read our detailed, Gun Safe Buyers Guide. This in-depth 9400-word article covers ALL these topics:

Anti-Corrosion
Budget Safes
Bolt Layout
Door Seals
Fire Proofing
Handgun Storage
Hinges
Humidity Control
Installation Tips
Interior Layout
Interior Lighting
Locks–Dial vs. Digital
Modular Safes
Rotary Racks
Size and Weight
Temperature Control
Wall Thickness
Water Proofing

Technical Features of Gun Safes — What You Need to Know

This is a very sensible, informative video that examines the technical features of gun safes. You’ll learn about the steel “gauge” or thickness, the different types of hinges, lock controls, and fire-proofing options. We think anyone contemplating purchase of a large home safe should watch this video, prepared by a respected safe retailer in Las Vegas.

Assembly of SnapSafe Titan XXL Double Door Modular Safe

In this video Gavin Gear of UltimateReloader.com shows the unpacking and assembly of a large, twin-door SnapSafe modular safe. This video shows how individual panels are assembled one by one, and how the twin doors are attached. Gavin also shows the process of installing the interior insulation panels which provide basic fire protection. Remarkably, this entire XXL modular safe can be put together with simple tools in less than an hour. SEE Full Article HERE.


Gunsafe gun safe saturday movies video showcase vault security modular

Features of a Quality Safe under $1000

Even if you already have a safe, this video is well worth watching. The host shows a variety of accessories and upgrades that all gun safe owners should consider. The host explains why you should have a dehumidifier or Golden Rod. He also shows how to install handy interior lights that activate automatically when the door is opened.

The Gun Vault — The Next Step Beyond a Jumbo Gun Safe

If you have a very large gun collection and are building a new custom home, you may want to consider a Gun Vault. This is essentially a large, secure room, with a very heavy door and thick walls. In this interesting video, Atlas builds a large walk-in gun vault using the Gallow Tech Shelving System and a Fort Knox Gun Vault door.

After the Fire — What Actually Happens in a Burned Safe

In this video, the hosts open a “fireproof” gun safe that went through an actual house fire. See what happens when a gun safe that is supposed to be fireproof actually is exposed to a major fire. The results are surprising to say the least. This video shows that you need to do your homework before buying a “fireproof” safe. Understand how the fire rating systems work, and learn how the interior materials and construction make a big different in real world fire protection.

Mechanical Locks vs. Electronic Locks — What You Need to Know

One important decision when buying a gun safe is the choice of locking mechanism. Should you go with a mechanical lock or an electronic lock? There are pros and cons to both dial locks and e-locks, and as long as you get a quality lock, neither is a bad choice. To help you make your decision, This video explains the differences between the two, and reasons why you might choose one over the other.

How to Assemble a Modular Safe with Simple Tools

For gun owners who move frequently, or who may live in an upstairs apartment or condo, a modular safe makes sense. Steelhead Outdoors, based in Minnesota, offers three different safes: Nomad 26, 32, and Nomad 38. The video below shows how to assemble a Steelhead Outdoors Nomad series safe. If you have basic skills, these safes can be assembled easily in 60-90 minutes. Steelhead recommends having two people to do the job. The entire safe ships in four (4) boxes. Wrenches are included with the safe.

This time-lapse video shows the entire process of assembling the safe, start to finish.

Guide to Quick Access Handgun Safes

A quick access safe can keep your pistol secure, but also readily accessible. But not all of these devices are created equal. This video explains the features you need in a small pistol safe. The video also examines the pros and cons of seven different handgun safes. We recommend that you do NOT keep your handgun safe in plain view, such as on a bedside table. There are other locations where you still have quick access, without tempting home intruders.

Wireless Hygrometer Reports Temperature and Humidity Inside Safes

The Hornady Security® Wireless Hygrometer monitors temperature and humidity in real-time, all without opening the gun safe. The wireless hygrometer employs a remote sensor inside your safe, which measures temperature and humidity data. This data is then sent to an external base display. Wireless technology eliminates the need to open the safe and check the storage environment, preventing temperature and humidity spikes from the outside air.

The display features a large touchscreen that shows current high/low data from both the base and remote units in Fahrenheit or Celsius. The hygrometer pairs with Hornady Security’s in-safe dehumidifiers to combat oxidation-causing moisture.

Gun Safe Installation Recommendations

Every safe, when possible, should be anchored in place with heavy-duty fasteners. Ideally, use multiple bolts in the bottom of the safe, anchored to concrete or solid foundation. Choose the appropriate lag bolts or anchors for the material below your safe. If you can’t mount to the floor, bolt the safe to wall studs. You can locate the position of the studs with an inexpensive electronic “Stud Sensor” available at home supply stores.

Check the thickness of your safe floor. If the steel on the bottom of your safe is fairly thin, place a steel backing strip between the bolt heads and the safe bottom. (Large washers will work, but a backing strip is better.) Without such reinforcement, the bolt heads may pull right through thin-gauge steel if the safe is rocked, or levered from the bottom with a pry-bar.

Locate your safe in the corner of a room or in a recess that blocks access to one or more sides of the safe. On many gun safes, the steel on the top, sides, and rear is thinner than on the door. Blocking access to the sides makes it much more difficult to use power tools on the sides, where the safe is most vulnerable. It’s also wise to place the safe in a relatively tight space with limited room to maneuver. Anything that makes the safe harder to move helps deter would-be thieves.

Many people place their safe in a garage or basement. That’s not necessarily a bad idea, but people also tend to store their tools in the same locations. Don’t store your power tools next to the safe. One safe-maker told us how a customer’s safe was defeated using the owners’ own cutting torch which was stored right next to the safe!

Inspect the area around the safe. Avoid locations where there are a lot of wood beams, paint cans, or other combustible material nearby. In the event of a serious house-fire, these items will fuel the flames, increasing the likelihood that items inside your safe will be heat-damaged. Chris Luchini, co-author of Rec.Gun’s Guide to Gun Safes, offers some practical advice: “Get an alarm system. If the burglars hear an alarm go off, they are less likely to stick round to finish the job. Alarms on both the house and the safe area are a good idea.”

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July 17th, 2024

Fire-Form with Fouler Shots — Save Time, Bullets, and Barrel Life

Fire-forming fouler barrel life fouling shots

Fire-Form with Foulers

PPC Fire-formingHere’s a tip for guys who shoot the 6 PPC, 6 Dasher, 6 BRA, .284 Shehane, or other wildcat cartridges that require fire-forming. Use your fouler shots to fire-form new cases. That way your fouler shots do “double-duty” and you get your brass fire-formed without putting extra rounds through your expensive barrel.

This procedure is recommended by Joel Kendrick, the 2004 IBS 600-yard Shooter of the Year. After he cleans his barrel, Joel knows it takes two or three shots to foul in the bore before accuracy returns. When shooting his PPC, Joel uses those fouler shots to fire-form his new brass. Joel explains: “I like to have relatively new brass always ready. By fire-forming a couple cases after each barrel-cleaning during a match, by the end of the weekend I’ve got a dozen or more freshly fire-formed cases to put into the rotation. If you do this with your fouler shots you get your fire-forming accomplished without using up any extra barrel life.”

This not only saves barrel wear, but it saves you trips to the range for the purpose of fire-forming. We thank Joel for this smart suggestion. For those who do not have a dedicated barrel for fire-forming, this should help keep your round-count down. Note: With this fouler fire-forming routine, you should ALWAYS do the fire-forming with the SAME POWDER you load for your match ammo. Joel currently works as the Supplier Quality Process Engineer for MMI-TruTec, a company that offers barrel surface coatings that can further extend your barrel life.

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July 16th, 2024

Good Wind-Reading Resource — The Wind Book for Rifle Shooters

wind reading book Camp Perry Miller Cunningham

“The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.” — William Arthur Ward

Readers often ask us: “Is there a decent, easy-to-comprehend book that can help my wind-reading?” Many of our Forum members have recommended The Wind Book for Rifle Shooters by Linda Miller and Keith Cunningham.

New Edition — Hardback and eBook
The latest, updated edition of The Wind Book for Rifle Shooters was released in May 2020. This 144-page book, first published in 2007, is a great resource. But you don’t have to take our word for it. If you click this link, you can read book excerpts and decide for yourself. When the Amazon page opens, look below the book cover photo, and click the bar labeled “Read Sample”. This lets you preview chapters from the Wind Book, and view some illustrations. Along with the hardback edition ($22.99), Amazon offers a Kindle (eBook) edition for $14.99.

Other books cover wind reading in a broader discussion of ballistics or long-range shooting, such as Applied Ballistics for Long-Range Shooting by Bryan Litz. But the Miller & Cunningham book is ALL about wind reading from cover to cover, and that is its strength. The book focuses on real world skills that can help you accurately gauge wind angle, wind velocity, and wind cycles.

All other factors being equal, it is your ability to read the wind that will make the most difference in your shooting accuracy. The better you understand the behavior of the wind, the better you will understand the behavior of your bullet. — The Wind Book for Rifle Shooters

The Wind Book for Rifle Shooters covers techniques and tactics used by expert wind-readers. There are numerous charts and illustrations. The authors show you how to put together a simple wind-reading “toolbox” for calculating wind speed, direction, deflection and drift. Then they explain how to use these tools to read flags and mirage, record and interpret your observations, and time your shots to compensate for wind.

I believe this is a must-have book if you are a long-range sport shooter. I compete in F-Class Open and when I first purchased this book and read it from cover to cover, it helped me understand wind reading and making accurate scope corrections. Buy this book, read it, put into practice what it tells you, you will not be disappointed. — P. Janzso

If you have one book for wind reading, this should be it. Whether you’re a novice or experienced wind shooter this book has something for you. It covers how to get wind speed and direction from flags, mirage, and natural phenomenon. In my opinion this is the best book for learning to read wind speed and direction. — Muddler

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July 14th, 2024

How Cartridge Brass Is Crafted — Production Process Revealed

deep draw cartridge brass animated gif

Rifle cartridge brass manufacturingPrecision Benchrest and F-Class shooters favor premium brass from Lapua, Norma, Peterson, or RWS. (Lake City also makes quality brass in military calibers.) Premium brass delivers better accuracy, more consistent velocities, and longer life. Shooters understand the importance of good brass, but many of us have no idea how cartridge cases are actually made. Here’s how it’s done.

Top Deep-Draw Ram Illustration from Demsey Mfg.

The process starts with a brass disk stamped from strips of metal. Then, through a series of stages, the brass is extruded or drawn into a cylindrical shape. In the extrusion process the brass is squeezed through a die under tremendous pressure. This is repeated two or three times typically. In the more traditional “draw” process, the case is progressively stretched longer, in 3 to 5 stages, using a series of high-pressure rams forcing the brass into a form die. While extrusion may be more common today, RWS, which makes some of the most uniform brass in the world, still uses the draw process: “It starts with cup drawing after the bands have been punched out. RWS cases are drawn in three ‘stages’ and after each draw they are annealed, pickled, rinsed and subjected to further quality improvement measures. This achieves specific hardening of the brass cases and increases their resistance to extraordinary stresses.” FYI, Lapua also uses a traditional draw process to manufacture most of its cartridge brass (although Lapua employs some proprietary steps that are different from RWS’s methods).

RWS Brass Cartridge Draw process

After the cases are extruded or drawn to max length, the cases are trimmed and the neck/shoulder are formed. Then the extractor groove (on rimless cases) is formed or machined, and the primer pocket is created in the base. One way to form the primer pocket is to use a hardened steel plug called a “bunter”. In the photos below you see the stages for forming a 20mm cannon case (courtesy OldAmmo.com), along with bunters used for Lake City rifle brass. This illustrates the draw process (as opposed to extrusion). The process of draw-forming rifle brass is that same as for this 20mm shell, just on a smaller scale.

20mm cartridge brass forming

20mm Draw Set Oldammo.com

River Valley Ordnance explains: “When a case is being made, it is drawn to its final draw length, with the diameter being slightly smaller than needed. At this point in its life, the head of the draw is slightly rounded, and there are no provisions for a primer. So the final drawn cases are trimmed to length, then run into the head bunter. A punch, ground to the intended contours for the inside of the case, pushes the draw into a cylindrical die and holds it in place while another punch rams into the case from the other end, mashing the bottom flat. That secondary ram holds the headstamp bunter punch.


This video employs DEFORM-2D software to show the draw process for brass casings.

Lake City Brass bunterThe headstamp bunter punch has a protrusion on the end to make the primer pocket, and has raised lettering around the face to form the headstamp writing. This is, of course, all a mirror image of the finished case head. Small cases, such as 5.56×45, can be headed with a single strike. Larger cases, like 7.62×51 and 50 BMG, need to be struck once to form a dent for the primer pocket, then a second strike to finish the pocket, flatten the head, and imprint the writing. This second strike works the brass to harden it so it will support the pressure of firing.”

Thanks to Guy Hildebrand, of the Cartridge Collectors’ Exchange, OldAmmo.com, for providing this 20mm Draw Set photo. Bunter photo from River Valley Ordnance.

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July 13th, 2024

Brass Faults That Predict Case Failure — Inspect Your Brass

Glen Zediker reloaders corner midsouth book AR-16 reloading semi-auto brass safety primer resizing
Close-up view of a sectioned case. This one here was “fixin’ to pop”, observed Glen Zediker.

Here are highlights from an article Glen Zediker wrote for the Midsouth Blog. In that article Glen, who sadly passed away in 2020, focused on cartridge brass. Glen identified the most common failures that appear with brass that has been shot multiple times, or which has been fired at excessive pressures. Glen explained some simple ways to check your cartridge brass to detect “early warning signs” of case failure, particularly case head separation, which can be very dangerous.

Glen authored many excellent books on reloading. This article is adapted from two of Glen’s books: Handloading For Competition and Top-Grade Ammo.

How Cases Degrade with Multiple Firings By Glen Zediker
This article explains when, and then how, to check after the progress of changes commencing with the firing on a new case. It’s the “progress of degeneration,” in a way of looking at it because the concern is getting a handle on when enough change in the brass has come about to require attention. Or abandonment. As said then, for me that’s 4 firings. That, as said last time, is when I might see changes that need attention. Also as said, that figure didn’t come out of a hat, but from my own notes in running my competition NRA High Power Rifle loads. [Editor’s Note: With Lapua brass, using moderate loads, in bolt-action rifles, we typically get about 10 good (match-worthy) firings. But if you anneal your Lapua brass, and run modest pressures, Lapua brass can perform well for 20 or more load cycles.]

The areas most affected are the case neck and case head area. Case neck walls get thicker [but] the case head area body walls get thinner. Primer pockets get shallower and larger diameter.

Glen Zediker reloaders corner midsouth book AR-16 reloading semi-auto brass safety primer resizing

This case shows a cracked neck AND a crack (separation) above the case head. Zediker says it is “rare to see one case with both of the most common failures. [This case] was attacked by an M14.”

Case Head — Causes of Separation and Cracking
When a case is under pressure during firing, the brass, like water, flows where it can, where it’s more free to move. Of course, the chamber steel limits the amount it can expand. The case shoulder blows fully forward and the case base is slammed back against the bolt face. There is, therefore and in effect, a tug on both ends — it gets stretched. The shoulder area is relatively free to expand to conform to the chamber, but the other end, the case head area, is not. Since that’s the area of the case with the thickest walls, it doesn’t expand “out” much at all. What it does is stretch. The “case head area,” as I refer to it here, is the portion of the case above the web, which is just above the taper that leads in to the extractor groove. The “area” extends approximately an eighth-inch up the case body.

Glen Zediker reloaders corner midsouth book AR-16 reloading semi-auto brass safety primer resizing

Here’s a “pressure ring.” You’ll see this after firing, if you see it. And, if you see it, that case is done. The bright ring indicates excessive stretching, which indicates excessive thinning. If you see a ring circling the case, noticeable because it’s lighter color than the case body, and it’s in this area, I’d say that case is done. And that’s right where a “head separation” occurs. It can crack and also blow slap in two, and that’s the “separation” part of case head separation.

Case-head case cartridge pressure ring separation head failure GS Arizona
Photo courtesy GS Arizona.

This is a spot to keep close watch on as cases age. It is also the area that is more “protected” by sizing with less case shoulder set-back. That is, pretty much, where the freedom for the stretching movement in this area comes from (the case shoulder creates a gap). If you’re seeing a sign that a head separation [might happen with relatively few firings], chances are the shoulder set-back is excessive, and also… the load pressure level.

Bent Paper Clip Case-Wall Gauge
Case-Head Separation paper clip Glen Zediker GS Arizona

Editor: You can use a bent paper clip to detect potential case wall problems. Slide the paper clip inside your case to check for thin spots. GS Arizona explains: “This simple little tool (bent paper clip) will let you check the inside of cases before you reload them. The thin spot will be immediately apparent as you run the clip up the inside of the case. If you’re seeing a shiny line on the outside and the clip is really hitting a thin spot inside, it’s time to retire the case.” Photo by GS Arizona.

Monitor Primer Pocket Dimensional Changes
Another case-head-area and pressure-related check is the primer pocket. As said, the primer pocket will get larger in diameter and shallower in depth each firing. As with many such things, the questions are “when” and “how much,” and the main thing, “how much?”

If the pocket gets excessively shallow, and that’s judged by a primer that seats fully but isn’t at least a tick below flush with the case base, there could be function issues. There’s a risk of a “slam-fire” with a semi-auto that uses a floating firing pin, and, if there is actual protrusion, that has the same effect as insufficient headspace. A primer pocket uniformer can reset the depth of a shallowed primer pocket to what it should be, but the real test for me is how easily the next primer seats into it. If it’s significantly less resistance, I’ll say that case is done. Shallower can be refurbished. That’s a primary function of a primer pocket uniformer. Larger diameter, though, can’t be fixed. I’ve mentioned in another article or two that, any more at least, my main gauge of load pressure has become how much primer pocket expansion there’s been.

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July 11th, 2024

Air Travel with Rifles — Tips on Transport and Re-Zeroing

tsa luggage rifle case Stan Pate Airline Travel

lodi wisconsin winnequah f-class nationalsThe 2024 F-Class National Championships is just one month away. The event will be held in Lodi, Wisconsin from August 10th through the 17th, 2024 at the Winnequah Gun Club. The Mid-Range Championships run August 10-13, while the Long Range Championships run August 14-17.

We know many of our readers will be attending the F-Class National Championships, and a good percentage of them will be flying in from around the country. For these F-Class competitors, and other readers who will be flying with firearms this summer, we provide this article with practical tips for transporting your rifles.

Winnequah Gun Club f-class nationals 2024

Traveling with Firearms — Important Advice

Savage Arms offers a series of Shooting Tips in the Savage Blog. Here is a helpful article from Team Savage Shooter Stan Pate. This covers how to ship your rifle safely, and then re-establish zero properly when the gun is reassembled after transport.

Traveling with firearms can be stressful. You must comply with multiple regulations and then trust your expensive guns to airline baggage handlers. And after arrival you’ll need to put your rifles back together and confirm the zeros. This article offers helpful travel advice from Team Savage shooter Stan Pate. Pate has traveled the globe competing with match rifles. Here he shares his tips for making trips easier on you and your firearms.

Easier Air Travel With Firearms
TSA isn’t nearly as careful with your rifles as you are. Proper storage before sending your firearm up a conveyer belt and into the belly of a plane is critical. Stan Pate spends lots of time each year traveling the skies and has devised a system for keeping his rifle safe when going to and from.

“Never travel with your firearm completely assembled,” Pate cautions. “A fully assembled firearm is much heavier [as a total unit] than one that has been broken-down and stored [in separate sections]. More weight creates more in-the-case movement, which can result in damage. I learned this the hard way years ago. My rifle was actually broken in half when traveling to an international competition. Record your torque settings, use those settings during reassembly and your return to zero should be no problem.”

“Be sure to check on current TSA rules and regulations before travel to be aware of any changes that may effect how you pack your rifles,” says Pate.

Rifle Reassembly and Resetting Zero
The quicker you can reestablish your zero, the quicker you can relax and stop worrying about if your rounds are going to hit their mark during competition. Pate, over the years, has developed a system for rifle reassembly and getting back to zero as quickly as possible. While his torque settings may not be the same as yours, the process can still be used.

tsa luggage rifle case Stan Pate Airline Travel

“The barreled-action goes back on the stock, and then I tighten all three receiver screws finger tight,” says Pate. “Next, I tighten the front two receiver screws down to 35-inch pounds. The rear receiver screws on this particular rifle likes 15-inch pounds. [Note: Proper torque settings will vary with your action and stock type. Most actions have TWO screws, not three.] Scope attachment comes next, and I follow manufacturer settings when tightening it down. All that’s left to do now is go zero your rifle.”

This video explains an efficient method to Re-Zero your rifles

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July 11th, 2024

Single Stage vs. Progressive Presses — Function and Safety

Accurateshooter.com USAMU progressive press reloading

For many years, the U.S. Army Marksmanship Unit (USAMU) regularly published reloading “how-to” articles on the USAMU Facebook page. In this article, the USAMU’s reloading gurus address a question frequently asked by prospective handloaders: “Should I buy a single-stage press, or a progressive?” The USAMU says the best answer is Solomon-esque in both its wisdom and simplicity: “Get BOTH!” However, there is definitely more to the issue, as the USAMU explains below.

USAMU Reloading

Progressive Press Safety Considerations

by USAMU Staff
Many are the beginning handloaders who have asked a friend about their “setting up” a progressive press for them. The idea is that the newbie could then just feed in components and crank out buckets of practice ammo without needing to really learn much about handloading. Tempting though this might be, that’s simply not how it works. Such an approach might be ok if there were never a malfunction with either press or operator, but that’s unrealistic. Our hypothetical newbie would then lack the knowledge to problem-solve most situations.

usamu progressive reloading press RCBS

Worse yet, several different handloading operations would be occurring at different stations on the progressive press at the same time. It takes an experienced operator to keep track of, and truly understand the significance of, all those potential mini-problems. Loading without this experience is a recipe for potential disaster – such as a double powder charge (especially with pistol cartridges) dropped while the loader was attending to some other function, etc. Progressives are an animal unto themselves, and while they offer many benefits, they do take some getting used to – even by experienced handloaders!

ILLUSTRATIVE HORROR STORY
Here, enter a 40-year veteran handloader who decided to jump onto the progressive bandwagon late in his career, having used only single-stage presses all his life. A High Master NRA High Power Rifle competitor, he had no background in competitive pistol shooting, where historically most progressive presses are found.

Experienced Action Pistol shooters have typically encountered multiple episodes in which shooters “skipped” a powder charge for some reason, leading to a squib round and a bullet possibly lodged in the bore. Thus, at matches, it’s reflexive for them to yell “STOP!” in unison if they see a shooter get a “click” vs. a “bang”, and rack the slide to keep firing. This writer has personally seen several pistols saved in just such scenarios over the years.

Click No Bang — What NOT to Do
Our High Master set up a popular progressive press and began turning out .223 Rem 100-yard practice ammo with abandon. He was using a moly-coated 52gr match bullet and an economical, fast-burning surplus powder that gave great accuracy. Once on the range, he began practicing strings of rapid-fire. All was well, until he heard “Click!” rather than “Boom”.

Lacking the above experience or onlookers to halt him, he reflexively operated the charging handle on his expensive, custom NM AR15 Service Rifle, and the next trigger squeeze reportedly registered on seismographs over at least a three-state radius. He sat, uninjured but bewildered, until the hail of expensive bits and pieces quit raining down around him.

When the smoke cleared, he immediately cursed the horrid, evil, demonically-possessed progressive press for this, his first-ever reloading mishap. His $1400 NM upper was ruined, but thankfully, his $800 pre-ban lower… and he had escaped injury.

This tale is told not to discourage the use of progressive presses, but to emphasize the need to EASILY and IMMEDIATELY KNOW what is happening with the press at each station, every time the handle is cranked. Not to do so is, as they say, “bad ju-ju.”

It illustrates why we at the USAMU Handloading Shop agree in recommending that new handloaders should begin with a single-stage press. Once one thoroughly learns the steps in each phase of handloading by repeated experience, then one will be qualified to move on to a progressive press.

The single-stage press will REMAIN virtually indispensable for one’s entire handloading career, even after having purchased a progressive press (or two). There are endless small projects that are best handled on a single-stage press, and a poll of USAMU’s Handloading staff reveals that not one would willingly be without his single-stage press, despite owning at least one progressive.

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July 9th, 2024

Optics Tech Tip — How to Adjust Scopes to Minimize Parallax

Nightforce Optics Parallax Newsletter Scope Video
Nightforce Optics Parallax Newsletter Scope Video

PARALLAX – What is it and Why is it important?

Nightforce Optics Parallax Newsletter Scope Video

What is Parallax?
Parallax is the apparent movement of the scope’s reticle (cross-hairs) in relation to the target as the shooter moves his eye across the exit pupil of the riflescope. This is caused by the target and the reticle being located in different focal planes.


Here’s a good explaination of scope parallax. This video has been watched over 790,000 times.

Why is it Important?
The greater the distance to the target and magnification of the optic, the greater the parallax error becomes. Especially at longer distances, significant sighting error can result if parallax is not removed.

How to Remove Parallax
This Nightforce Tech Tip video quickly shows how to remove parallax on your riflescope.

While keeping the rifle still and looking through the riflescope, a slight nod of the head up and down will quickly determine if parallax is present. To remove parallax, start with the adjustment mechanism on infinity and rotate until the reticle remains stationary in relation to the target regardless of head movement. If parallax has been eliminated, the reticle will remain stationary in relation to the target regardless of eye placement behind the optic.

This Parallax Discussion first appeared in the Nightforce Newsletter. Nightforce also offers a series of Informational Videos covering a variety of topics.

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July 9th, 2024

Weakside Bolt Placement Benefits for Benchrest and F-Class

left port McMillan Rifle

Most bolt-action rifle shooters work the bolt with their trigger-pulling hand. This is because most rifles sold to right-handed shooters come with right-side bolts, while “lefty” rifles come with left-side bolts. This “standard” configuration requires the shooter to take his dominant, trigger-pulling hand off the stock to cycle the bolt, then re-position his hand on the stock, and “re-claim” the trigger. Often the shooter must lift or move his head to work the bolt, and that also requires him to re-establish his cheek weld after each and every shot. Not good.

This really doesn’t make much sense for precision shooting with fore-end support*. There is a better way. If you leave your trigger hand in position and work the bolt (and feed rounds) with the opposite hand, then you don’t need to shift grip and head position with each shot. All this requires is a weakside-placed bolt, i.e. a left bolt for a right-handed shooter or a right bolt for a left-handed shooter. The video below shows a “Lefty” working a right bolt. Note how efficient this is:

As our friend Boyd Allen explains: “If you think about it, if you are going to work with a factory action where your options are left bolt and left port or right bolt and right port, and you are building a rifle that will only be shot from a rest, using the left/left for a RH shooter or using a right/right for a LH shooter works better than the conventional configuration”.

Shoot Like a Champ and Work the Bolt with Your Weakside Hand
Derek Rodgers is a recent F-TR World Champion, a King of 2 Miles champion, AND is the only person to have won BOTH the U.S. F-Open and the U.S. F-TR National Championships.

And guess what? Derek runs this kind of “opposite” bolt set-up. Yep, Derek shoots right-handed with a left bolt. Though Derek is a right-hander, he shoots with a Left Bolt/Left Port (LBLP) action. He pulls the trigger with his right index finger, while working the left-side bolt with his left (weakside) hand. This allows him to stay in position, and maintain his cheekweld. He places his right hand on the grip, while manipulating the bolt (and feeding rounds) with his non-trigger-pulling hand.

Past F-TR World Champion and Past King of 2 Miles Derek Rodgers
left port McMillan Rifle Derek Rodgers

This is the rifle with which Derek won the 2013 F-TR National Championship.
left port McMillan Rifle Derek Rodgers

*For true standing, off-hand shooting (whether in competition or on a hunt), a conventional strongside bolt placement makes sense, since the non-dominant arm must support the front of the rifle all the time. When shooting from bipod or rest, it’s a different story.

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July 7th, 2024

Primer Flash Chain Reaction in Priming Tool Tray Causes Injury

primer flash explosion Hornady handheld primer tool kaboom

Here is an important safety reminder for readers who employ hand priming tools with trays of multiple primers. In this instance a primer detonated while being seating in a pistol cartridge case. This caused a “flash-over” which instantly ignited multiple other primers in the tray. That, in turn, caused a small explosion which broke the tray and Hornady Handheld Priming Tool. The user, a Forum member, reported this in our Shooters’ Forum in 2021.

primer flash explosion Hornady handheld primer tool kaboomReport by Forum Member about Primer Flash-Over Incident
I had a small scare the other day while reloading. My experience might be a helpful reminder to people to keep safe and follow proper procedures and not be sloppy.

A primer popped (went off) when being seated and (while hot) flashed over into the tray causing other primers in the tray to detonate. That, in turn, broke my Hornady Handheld Priming Tool and injured my hand.

Here is my loading area after the incident. Note the damage to the hand priming tool. I’m not not sure where the rest of the pieces are.

primer flash explosion Hornady handheld primer tool kaboom

Injuries to User — Multiple Cuts on Hand and Forearm
This photo shows the resulting cuts to hand. Fortunately they seem superficial. Note — I was wearing latex gloves so my hand had some protection.

primer flash explosion Hornady handheld primer tool kaboom

The blast also blew my glasses off my face and they landed about six feet away. Be careful folks and wear your eye protection! EDITOR: Guys — This is yet more compelling evidence why handloaders should always wear eye protection!

More Details — Primers Were Federal LP, Case Primer Pockets Had Been Checked
The forum member noted: “Just in case people are interested, I didn’t notice anything different from usual. Cases were Privi Partizan (PPU) factory brass on their fourth firing. The primers were Federal Large Pistol. The cases had been ultrasonic cleaned and the primer pockets checked prior to priming. I had primed around 50 cases during this session before the accident.”

Here is a close-up of “flashed” primers — note the empty but dented cups and triangular “anvils”:

primer flash explosion Hornady handheld primer tool kaboom

This incident happened using a Hornady Handheld Priming Tool, as shown below.

primer flash explosion Hornady handheld primer tool kaboom

Two other Forum members reported feeding issues with this particular Hornady handheld priming tool and one other member, Kiwi Greg, suffered a multi-primer detonation causing injury: “I had the same thing happen a few years ago now with the same Hornady hand primer with 50-75 [Federal 215M primers] in the tray. Made a bit of a mess of both my hands, blew primers and tray all around my large workshop. Scared the [heck] out of my employee who was near me at the time. Some stitches, bandages and it was all good, [but with] some wicked scars… I think a primer had turned side-on when being put into Bertram .408 CT brass which had nice tight pockets and required more force than usual. I use RCBS [priming tools] now with a flat bar that slides across to prevent sympathetic detonations. I hadn’t heard of it before, but found out it wasn’t that uncommon after it happened.”

Thanks to Boyd Allen for finding this post.
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