Eurooptic vortex burris nightforce sale




teslong borescope digital camera barrel monitor


As an Amazon Associate, this site earns a commission from Amazon sales.









August 9th, 2016

New Zeiss Conquest Gavia 85 Spotting Scope Looks Good

Zeiss 85mm spotting scope HD glass Gavia Conquest

Carl Zeiss Sports Optics has introduced a new 85mm spotting scope, the Conquest Gavia 85. This new 30-60X spotter is a modern, shorter and lighter design that may challenge Kowa’s category-leading 88mm Prominar spotter, at a more attractive price. The Zeiss Gavia 85’s MSRP is $1999.99. You can pay $2100.00+ for the Kowa 88mm Prominar angled BODY ONLY. Kowa’s 25-60X Prominar LER Eyepiece runs another $569.00, so total cost approaches $2700.00 for the Kowa system.

The new Conquest Gavia 85 angled spotting scope combines 60X max magnification with a wide-angle field of view. A large center ring allows fast, positive focusing. Zeiss claims the large 85mm objective and low-dispersion HD glass provides “outstanding optical performance and brightness” plus great low-light performance. For a spotting scope with a large 85mm objective, the Zeiss Gavia 85 is lighter than expected. With 30-60X removable eyepiece, this spotter weighs in at 60 ounces (3.75 lbs. or 1.7 kg). The spotter is fogproof and waterproof, with LotuTec® lens coatings for easy cleaning and good clarity in all types of weather.

Zeiss 85mm spotting scope HD glass Gavia Conquest

Zeiss 85mm spotting scope HD glass Gavia ConquestZeiss Conquest Gavia 85 Specifications:
Magnification: 30-60X
Objective Lens Diameter: 85 mm
Exit Pupil Diameter: 2.8-1.4 mm
Focal Length (Objective Lens System): 494 mm
Field of View at 1,000 yards: 99-69 ft
Close Focus: 10.8 ft
Lens Type: HD with LotuTec® /T* coating
Length: 15.6 in
Weight (incl. Eyepiece): 60 oz.
Lens Thread: M 86 x1
Retail Price: $1,999.99

For more information on the Zeiss Gavia 85 spotting scope and other Zeiss products, visit www.Zeiss.com or the Zeiss Facebook Page.

Optics Product Tip from EdLongrange. We welcome reader submissions.
Permalink New Product, Optics 3 Comments »
August 8th, 2016

Ginny Thrasher Wins First Gold Medal of 2016 Rio Olympics

Rio Olympics Games Shooting Sports Virginia Thrasher Ginny Gold Medal
Rio Olympics Games Shooting Sports Virginia Thrasher Ginny Gold Medal

The United States garnered its first Gold Medal of the 2016 Olympiad on Saturday… but it wasn’t won by a swimmer, or a runner, or a gymnast. That first gold was captured by a shooter — a bright-eyed, talented 19-year-old girl, Ginny Thrasher. In fact, Ginny won the very first gold awarded in any sport at the 2016 Olympics, so she has become something of a celebrity. Watch the video below to see Ginny’s “Gold Medal Moment”.

Ginny Thrasher Wins 10m Air Rifle Gold Medal

Ginny shot superbly, starting off with a perfect 10.9 ace, and finishing the event with a 208.0 match total score, a new Olympic record.

Rio Olympics Games Shooting Sports Virginia Thrasher Ginny Gold Medal

Thrasher made history by winning the women’s 10 meter Air Rifle finals, outshooting top-ranked Andrea Arsovic (Serbia) and defending champion Siling Yi (China). In the final round, Ginny went head to head with Li Du from China, a two-Time gold medalist (2004, 2008). Competing in her first-ever Olympics, Ginny’s superb skills and positive mental attitude helped her overcome the Chinese shooter’s years of experience. Ginny told reporters: “This is beyond my wildest dreams. I knew it was a realistic expectation for me to get into the finals and once you get into the finals, anything can happen. For me, this year has been incredible.” Read More HERE.

Rio Olympics Games Shooting Sports Virginia Thrasher Ginny Gold Medal

Though still a teenager, Virginia “Ginny” Thrasher has risen to the very top of her sport. In April she won the 2016 U.S. Olympic Team Trials in Smallbore Rifle, securing her spot at the Rio Olympics where she won gold. Prior to that, Ginny won individual NCAA titles in both air rifle and smallbore as a freshman on the WVU Mountaineers shooting team. This girl is a genuine phenom. Congratulations Ginny — you’ve made your country proud. We also wish good luck to all the other Team USA shooters.

Thrasher Factoid: Ginny Thrasher was a competitive figure skater before switching to shooting five years ago after going on a hunting trip with her grandfather. Who knows — perhaps Ginny could have medaled in the Winter Olympics had she stayed on the ice.

Rio Olympics Games Shooting Sports Virginia Thrasher Ginny Gold Medal

Permalink Competition, News 2 Comments »
August 8th, 2016

Bargain Finder 47: AccurateShooter’s Deals of the Week

Accurateshooter Bargain Finder Deals of Week

At the request of our readers, we provide select “Deals of the Week”. Every Monday morning we offer our Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, 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. Precision Reloading — 10% and 15% Off Berger Bullets

Berger Bullets Match Hybrid sale Discount

Berger projectiles have won countless matches and set scores of World Records. Now you can save big bucks on match and hunting bullets from Berger Bullets in a wide variety of calibers and weights. Right now Precision Reloading is offering 10% off orders of $100 or more (Code BG8161), and 15% off orders of $500.00 or more (Code BG8165). Precision Reloading has many of the most popular Berger match projectiles in stock, including 6mm 105gr Hybrids, and 7mm 180gr Hybrids. NOTE: This special only runs for a few more days, so don’t delay!

2. Midsouth — Lyman BoreCam Digital Borescope, $222.46

Bargain Deal Lyman Borecam Midsouth Shooters

Here’s a great deal on an excellent product in high demand. The Lyman BoreCam is an electro-optical borescope with a digital display. You can record “stills” on a SD card. This is one of the hottest products on the market right now. But we found some in stock at a great price. Midsouth Shooters Supply now has the BoreCam for $222.46. Grab it while you can at that price. Other online vendors are charging a LOT more. For example, the MidwayUSA price is $259.99.

3. RCBS — Buy Green, Get Green Rebate

RCBS Reloading Press Rebate Green

RCBS is running a very attractive Rebate Program currently. If you spend $300.00 on qualifying products you get a $75.00 rebate. Spend $50 and get a $10.00 Rebate. This program is limited to one (1) rebate redemption per calendar year, with a maximum of $75.00. CLICK HERE for more information. NOTE: To qualify, you must supply completed RCBS rebate coupon, original UPC barcodes from package, and original cash register receipt and/or dated, itemized sales invoice.

Get RCBS Chargemaster for $225.00 After Rebate
Using this rebate, you can get an RCBS Chargemaster from Amazon.com for a “final price” of $225.00. Amazon sells the Chargemaster for exactly $300.00 which qualifies for the $75.00 rebate.

4. Natchez Shooters Supply — 325 Rounds .22 LR Ammo, $22.99

AccurateShooter Deal Week Sale Bargain .22 LR Federal Bulk Ammo

This Federal .22 LR ammo is just 7 cents per round — the kind of pricing on bulk rimfire ammo we used to see in the “good old days”. Act quickly, this $22.99 Federal .22 LR Ammo deal won’t last long. Each box contains 325 rounds — enough ammo for many sessions at the range. The bullets are 40 grains, solid lead.

5. Grafs.com — Magnetospeed Sporter $179.99

Deals of Week RCBS Rock Chucker Supreme Kit

If you have been waiting to get a Magnetospeed… wait no longer. Priced at just $179.99 at Grafs.com, the Magnetospeed Sporter model costs less than half as much as Magnetospeed’s V3 models. This chronograph attaches directly to your barrel so you don’t have to go downrange to position tripods and set up skyscreens. For most people the Sporter Model contains all the features they need. Using Magnetospeed’s XFR adapter (sold separately), data can be transferred easily from the display module to your mobile device. READ Magnetospeed Sporter Review.

6. Midsouth — 20-60x60mm Vortex Spotting Scope, $399.99

Vortex Spotting Scope Midsouth bargain

This is a very good spotting scope for the price. Yes it gives up some low-light performance to a spotter with an 80mm objective, but otherwise it is a good performer, and we can’t think of much that will touch this Vortex Diamondback spotting scope for anywhere near the $399.99 sale price. Choose from angled or straight version for the same $399.99 price, which includes the 20-60X zoom eyepiece.

7. Amazon — Howard Leight Electronic Earmuffs $40.97

AccurateShooter Deals of the Week Muffs hearing protection Howard Leight earmuffs sale bargain

Every shooter should own a pair of Electronic muffs, even if you prefer shooting with earplugs and/or standard muffs. Electronic muffs are great when you are doing spotting duties or are working near the firing line. They allow you to hear ordinary conversations while still providing vital hearing protection. Right now Amazon.com has the Howard Leight Impact Sport Electronic Muffs on sale for just $40.97. This is good deal — these NRR 22 muffs are currently Amazon’s #1 seller in the category. NOTE: For regular, sustained shooting we recommend muffs and/or earplugs with a higher NRR rating.

8. Amazon — Leight MAX NRR33 Earplugs, $7.58 for 50 Pairs.

Max NRR 33 db ear plugs

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.

Permalink Bullets, Brass, Ammo, Hot Deals, Reloading No Comments »
August 8th, 2016

Leupold Files Federal Lawsuit Over Claimed Patent Violations

Leupold Stevens Nighforce Lightforce Lawsuit litigation Federal Court Oregon

Editor: The following statement was released by Leupold & Stevens Inc. on August 3, 2016. We publish the statement as it was released, without modification.

Leupold® Files Lawsuit Against Nightforce Over Patent Violations

Leupold & Stevens, Inc., has filed a civil suit in the U.S. District Court of Oregon alleging patent violations by Lightforce U.S.A., doing business as Nightforce. In the suit, Leupold & Stevens, Inc., alleges that Nightforce is marketing and selling products that infringe on a variety of patents owned by Leupold & Stevens, Inc. and is seeking all available remedies.

The lawsuit is based on six patents for riflescope adjustments, internal optical mechanisms, and flip covers.

Leupold & Stevens, Inc., has been pioneering riflescope and sporting optics technology since 1947, when it developed a non-fogging riflescope charged with nitrogen. Today, Leupold® has been granted over 151 patents and design registrations in 18 countries, representing Leupold’s continued commitment to innovation and development of sports optics. For more information on Leupold products, please visit us at www.leupold.com.

Leupold & Stevens, Inc. is committed to protecting its intellectual property and the innovations developed by its engineering and design teams.

Join the discussion on Facebook, www.facebook.com/LeupoldOptics, on Twitter at www.twitter.com/LeupoldOptics or on Instagram at www.instagram.com/LeupoldOptics.

Founded in Oregon more than a century ago, Leupold & Stevens, Inc. is a fifth generation, family owned company that designs, machines and assembles its riflescopes, mounting systems and tactical/Gold Ring® spotting scopes in the USA. The product lines include rifle, handgun and spotting scopes; binoculars; rangefinders; mounting systems; and optical tools, accessories and Pro Gear.

Initial Response from Nightforce Optics
We contacted Nightforce Optics regarding the legal action commenced by Leupold. A spokesman for Nightforce provided this response: “We have investigated [Leupold’s] claims and we are confident there is no infringement. We look forward to full and fair competition with Leupold in the future.”

Permalink News, Optics 3 Comments »
August 7th, 2016

30 BRX Wildcat — a 30 BR Improved That Runs Significantly Faster

30 BR 6mmBR 30 BRX wildcat Al Nyhus

We first ran this story a few years back. But it’s still a very interesting subject for benchrest shooters. Shown above, the 30 BR (a 6mmBR necked up to .30 Caliber) currently rules the benchrest-for-score game. However, a 30 BR Improved offers some potential advantages, particularly when the winds are strong or tricky. In this article Al Nyhus explains his 30 BRX wildcat. Running Hodgdon H4198, Al says he gets an easy 150 -200 FPS more than the conventional 30 BR. That can translate to less drift in the wind. It also lets you pursue a higher speed node, which can lead to improved accuracy with some barrels.

30 BRX wildcat cartridge VFSForum member Al Nyhus is a top-level score shooter who has competed successfully with the 30 BR cartridge in VFS (Varmint for Score) matches. Al has been working on an “improved” 30 BR cartridge that delivers extra velocity. Al’s 30 BRX cartridge is inspired by the 6mm BRX cartridge, popular in 600-yard benchrest and across-the-course competition. The 6mm BRX cartridge maintains the same sidewall profile and shoulder angle as the parent 6mmBR case. Likewise, the 30 BRX retains the 30° shoulder used on the popular 30 BR cartridge.

Al reports: “Thought you might like to see what I’ll be working with in my VFS gun this season. It’s a true 30 BRX — a 30 BR with the shoulder moved forward 0.100″ with the standard BR shoulder angle. Stan Ware of SGR Custom Rifles built one last season for Steve Grosvenor and I was really impressed by the performance of Steve’s gun. The 30 BR barrel on my VFS gun needed replacing, so the new 30 BRX got the nod.”

30 BRX Delivers 150-200 FPS More Velocity than 30 BR
Al says his 30 BRX gives a solid 150-200 fps speed gain over the 30 BR at the top, while needing just 2.5-3.0 more grains of Hodgdon H4198 to do so. A 30 BR case holds on average 40.8 grains of water, while the 30 BRX holds 42.3 grains (roughly 4% more). So the 30 BRX delivers a 7% increase in velocity with a mere 4% increase in H20 capacity. That’s pretty good efficiency. [Editor’s Note: Assuming 34 grains of H4198 is a typical 30 BR match load, Al’s increase of 2.5-3.0 grains for the 30 BRX represents roughly a 7.5-8.5% increase in actual powder burned. That explains the higher velocities.]

Why did Nyhus decide to try an “improved” 30 BR?

Al explains: “The 30 BRX was created to operate at a [higher] velocity level than can be achieved with the standard 30 BR case, while at the same time keeping the easy-tuning characteristics of the standard 30 BR case. We also wanted to use the same powders currently used with the 30 BR and maintain similar operating pressures.” Is the 30BRX harder to shoot because of the increased velocity? Al doesn’t think so: “In a 13.5-lb HV gun, the 30 BRX case is a pleasure to shoot with just a flea bite of recoil.”

Will the 30 BRX Replace the 30 BR in Score Competition?
The 30 BR is already an exceptionally accurate cartridge that dominates short-range Benchrest for Score competition. Will the 30 BRX make the standard 30 BR obsolete? Nyhus doesn’t think so. However, Al believes the 30 BRX offers a small but important edge in some situations: “On any given day, it’s the shooter that hits the flags best and makes the fewest mistakes that ends up on top. No amount of velocity will save you when you press the trigger at the wrong time. Missing a switch or angle change at 200 yards that results in 3/4″ of bullet displacement on the target can’t be compensated for with another 200 fps. That’s the hard fact of benchrest shooting. But on those days when, as Randy Robinett says, ‘our brains are working’, the BRX may offer enough of an advantage to turn a close-but-no-cigar 10 into an ‘X’ at 200 yards. Or turn a just-over-the-line 9 into a beggar 10.” Given the fierce competition in Score matches, an extra 10 or another X can make the difference between a podium finish and also-ran status.

Permalink Bullets, Brass, Ammo, Competition No Comments »
August 7th, 2016

Prescription Eyewear for Older Shooters

vision RX Prescription glasses for shooters

Shooting Sports USA has published an informative article covering prescription eyewear for shooters. In The Right Rx for Aging Eyes, writer Chris Christian reviews vision issues with Doctor of Optometry Alexis Rodriguez. Christian notes that many shooters have difficulty focusing on their sights as their eyes age. Even if you use scopes more of the time, we recommend you read this article, which explains the physiology (and bio-mechanics) of human vision.

Shooters experience vision issues as they get older, explained Dr. Rodriguez: “Presbyopia is the medical term that describes the natural deterioration of the eyes with age.” As people get older, the ability of the eyes to focus on near objects is diminished, due to the loss of elasticity of the crystalline lens inside the eye and the gradual deterioration of the ciliary muscles that help in bending the lens to focus. Rodriguez says the first symptoms usually occur around age 40, although some will experience them later. This normally starts with blurriness when looking at close objects. From that first point, this natural deterioration will continue to worsen until around the age of 65, where it normally stabilizes, and virtually all elasticity of focus is gone.

To overcome focus problems associated with aging eyes, Dr. Rodriguez often recommends a modified bifocal design for shooters. The lower insert is set to the shooter’s Sight Distance (SD) instead of a standard “reading” distance and the insert lens is moved upwards in the lens to a point in line with the bottom of the pupil. This allows the shooter to maintain a constant head position to access the lower lens and reduces image jump.

READ Full Article on Vision Correction for Shooters at SSUSA.org

Permalink - Articles, Optics 2 Comments »
August 7th, 2016

Recommended Resource: Ammo Encyclopedia (5th Edition)

Brussard ammunition encyclopedia 5th Edition

Wouldn’t it be nice to have a print resource at your fingertips that has hundreds of true-size cartridge illustrations, plus technical descriptions of thousands of popular cartridge types? That could be a real time-saver. It’s no wonder this book is an Amazon best-seller in its category.

If you’re a serious shooter, the latest 5th Edition of the Ammo Encyclopedia belongs in your library. This 1008-page book by Michael Bussard is probably the most comprehensive and up-to-date book in print covering current and obsolete cartridges and shotshells. The Ammo Encyclopedia is a massive resource work. The 5th Edition now boasts 105 chapters, covering thousands of handgun, rifle, and shotgun cartridges from the past century and a half.

One of the best features is a 12-page color section depicting actual size drawings of 265 current rimfire/centerfire cartridges and shotshells. You won’t find that many “life-size” cartridge drawings in one place even on the internet. Cartridge profiles and ballistic charts have been expanded to include all new factory cartridges. The authors have even included air rifle pellets and historical images and charts. Softcover, 1008 pages — edited by S.P. Fjestad.

Brussard ammunition encyclopedia 5th Edition

Comments from guys who bought the book:

“This book contains a vast array of information on many modern and even obsolete ammunition. Definitely recommend for any modern reloader novice or experienced.” – Duggaboy460

“It’s a great reference book for individuals who reload their own ammunition. There is a lot more info in this Edition. Everyone who likes this information should have it in their library.” – Reloader

“I like the general and technical comments that are available for each and every cartridge. Information that predicts if a cartridge will stay in production for many more years or rapidly become obsolete.” – RSL1

Permalink Bullets, Brass, Ammo, Reloading 2 Comments »
August 6th, 2016

How to Work with Density Altitude in Ballistics Calculations

In this video, Bryan Litz of Applied Ballistics talks about Density Altitude and the effect of atmospheric conditions on bullet flight. Bryan explains why you must accurately account for Density Altitude when figuring long-range trajectories.

Bryan tells us: “One of the important elements in calculating a fire solution for long-range shooting is understanding the effect of atmospherics. Temperature, pressure, and humidity all affect the air density that the bullet’s flying through. You can combine all those effects into one number (value) called ‘Density Altitude’. That means that you just have one number to track instead of three. But, ultimately, what you are doing is that you are describing to your ballistics solver the characteristics of the atmosphere that your bullet’s flying through so that the software can make the necessary adjustments and account for it in its calculations for drop and wind drift.”

Bryan adds: “Once you get past 500 or 600 yards you really need to start paying careful attention to atmospherics and account for them in your ballistic solutions”. You can learn more about Density Altitude in Bryan’s book, Applied Ballistics for Long Range Shooting (Third Edition).

General Scientific Definition of Density Altitude

Density altitude is the altitude relative to the standard atmosphere conditions (ISA) at which the air density would be equal to the indicated air density at the place of observation. Density altitude can be calculated from atmospheric pressure and temperature (assuming dry air). Here is the formula:

Litz Ballistics Density Altitude

Air is more dense at lower elevations primarily because of gravity: “As gravity pulls the air towards the ground, [lower] molecules are subject to the additional weight of all the molecules above. This additional weight means the air pressure is highest at sea level, and diminishes with increases in elevation”.*

Both an increase in temperature, decrease in atmospheric pressure, and, to a much lesser degree, increase in humidity will cause an increase in density altitude. In hot and humid conditions, the density altitude at a particular location may be significantly higher than the true altitude.

*Source: Miningandconstruction.com

Permalink - Videos, Bullets, Brass, Ammo No Comments »
August 5th, 2016

Olympic Shooting Sports Schedules and Coverage

The 2016 Rio Olympic Games kick off today with the Opening Ceremony. Shooting sports will be a part of these Olympics with competitions for rifle, pistol, and shotgun. From August 6 though August 14, Olympic shooters will compete in Brazil’s ultra-modern Olympic Shooting Center, originally created for the 2007 Pan-American Games at a cost of $53.5 million.

CLICK HERE for USA Shooting Olympic Preview with Team Profiles

SFC Michael McPhail Team USA
SFC Michael McPhail, shown above, is currently ranked #1 in the world in the smallbore 50m prone rifle discipline. He’s one of the favorites to win Gold in 2016.

2016 Olympic Media Coverage — TV and Internet
There will be some broadcast television coverage of shooting events. But the best way to follow the shooting matches is through streaming on the internet. NBCOlympics.com and the NBC Sports App will live stream 4,500 total hours of Olympics coverage — covering every event. Each day you can click the NBC Live Stream Schedule for Shooting Sports Events to see what’s running. CLICK HERE for complete shooting sports schedule.

With Rio just one hour ahead of the Eastern Time zone, Americans will enjoy great “real-time” coverage of the 2016 Summer Games. NBCUniversal will present 2,084 hours of Olympic programming across 11 affiliated TV and Cable networks.

Olympic Shooting Event Schedule

Note: All times are listed in Eastern Standard Time, one hour AFTER Rio Local Time. These are events with USA competitors.

Friday, August 5
7:00 pm Opening Ceremony

Saturday, August 6
7:30 am – 10m Air Rifle Women
9:30 am – Finals 10m Air Rifle Women
12:00 pm – 10m Air Pistol Men
2:30 pm – Finals 10m Air Pistol Men

Sunday, August 7
8:00 am – 10m Air Pistol Women
8:00 am – Trap Women
10:00 am – Finals 10m Air Pistol Women
2:00 pm – Finals Trap Women

Monday, August 8
8:00 am – 10m Air Rifle Men
11:00 am – Finals 10m Air Rifle Men

Tuesday, August 9
8:00 am – 25m Pistol Women Precision Stage
11:00 am – 25m Pistol Women Rapid Stage
2:30 pm – Finals 25m Pistol Women

Wednesday, August 10
8:00 am – 50m Pistol Men
8:00 am – Double Trap Men
11:00 am – Finals 50m Pistol Men
2:00 pm – Finals Double Trap Men

Thursday, August 11
8:00 am – 50m Rifle 3-Position Women
11:00 am – Finals Rifle 3-Position Women

Friday, August 12
8:00 am – 50m Rifle Prone Men
8:00 am – Skeet Women
9:30 am – Skeet Men Day 1
10:00 am – Finals 50m Rifle Prone Men
11:15 am – 25m Rapid Fire Pistol Men Stage 1
2:00 pm – Finals Skeet Women

Saturday, August 13
8:00 am – 25m Rapid Fire Pistol Men Stage 2
8:30 am – Skeet Men Day 2
11:30 am – Finals 25m Rapid Fire Pistol Men
2:00 pm – Finals Skeet Men

Sunday, August 14
8:00 am – 50m Rifle 3-Position Men
12:00 pm – Finals 50m Rifle 3-Position Men

You’ll find more information on Team USA and Olympic Shooting Competition on these websites:

usashooting.org
nbcolympics.com/shooting
teamusa.org

issf-sports.org
Rio2016.com
olympic.org

Permalink Competition, News No Comments »
August 5th, 2016

Mysteries Revealed: How Cut-Rifled Barrels are Made

Krieger Barrels Cut Rifling Cut-Rifled Barreling

For anyone interested in accurate rifles, this is absolutely a “must-watch” video. Watch blanks being cryogenically treated, then drilled and lathe-turned. Next comes the big stuff — the massive rifling machines that single-point-cut the rifling in a precise, time-consuming process. Following that you can see barrels being contoured, polished, and inspected (with air gauge and bore-scope). There is even a sequence showing chambers being cut.

Click Arrow to Watch Krieger Barrels Video:

Here is a time-line of the important barrel-making processes shown in the video. You may want to use the “Pause” button, or repeat some segments to get a better look at particular operations. The numbers on the left represent playback minutes and seconds.

Krieger Barrel-Making Processes Shown in Video:

00:24 – Cryogenic treatment of steel blanks
00:38 – Pre-contour Barrels on CNC lathe
01:14 – Drilling Barrels
01:28 – Finish Turning on CNC lathe
01:40 – Reaming
01:50 – Cut Rifling
02:12 – Hand Lapping
02:25 – Cut Rifling
02:40 – Finish Lapping
02:55 – Outside Contour Inspection
03:10 – Engraving
03:22 – Polish
03:50 – Fluting
03:56 – Chambering
04:16 – Final Inspection

Krieger Barrels

Permalink - Videos, Gunsmithing 4 Comments »
August 5th, 2016

Twist Rate: Common Misconceptions about Twist and Stabilization

FirearmsID.com barrel rifling diagram

Understanding Twist: Bullet Stabilization

by Sierra Bullets Ballistic Technician Paul Box for Sierra Bullets Blog.

Based on the questions we get on a daily basis on our 800 (Customer Support) line, twist is one of the most misunderstood subjects in the gun field. So let’s look deeper into this mystery and get a better understanding of what twist really means.

When you see the term 1:14″ (1-14) or 1:9″ twist, just exactly what does this mean? A rifle having a 1:14″ twist means the bullet will rotate one complete revolution every fourteen inches of the barrel. Naturally a 1:9″ turns one time every nine inches that it travels down the barrel. Now, here’s something that some people have trouble with. I’ve had calls from shooters thinking that a 1:14″ twist was faster than a 1:9″ because the number was higher with the 1:14″. The easiest way to remember this is the higher the number, the slower the twist rate is.

Now, the biggest misconception is that if a shooter has a .223 with a 1:8″ twist, his rifle won’t stabilize a 55gr bullet or anything lighter. So let’s look at what is required. The longer a bullet is for its diameter, the faster the twist has to be to stabilize it. In the case of the .223 with a 1:8″ twist, this was designed to stabilize 80gr bullets in this diameter. In truth the opposite is true. A 1:8″ will spin a 55gr faster than what is required in order to stabilize that length of bullet. If you have a bullet with good concentricity in its jacket, over-spinning it will not [normally] hurt its accuracy potential. [Editor’s Note: In addition, the faster twist rate will not, normally, decrease velocity significantly. That’s been confirmed by testing done by Bryan Litz’s Applied Ballistics Labs. There may be some minor speed loss.]

FirearmsID.com barrel rifling diagram
Many barrel-makers mark the twist rate and bore dimensions on their barrel blanks.

Think of it like tires on your truck. If you have a new set of tires put on your truck, and they balance them proper at the tire shop, you can drive down a street in town at 35 MPH and they spin perfect. You can get out on the highway and drive 65 MPH and they still spin perfect. A bullet acts the same way.

Once I loaded some 35gr HP bullets in a 22-250 Ackley with a 1:8″ twist. After putting three shots down range, the average velocity was 4584 FPS with an RPM level of 412,560. The group measured .750″ at 100 yards. This is a clear example that it is hard to over-stabilize a good bullet.

Twist-rate illustration by Erik Dahlberg courtesy FireArmsID.com. Krieger barrel photo courtesy GS Arizona.
Permalink - Articles, Bullets, Brass, Ammo 4 Comments »
August 4th, 2016

How Rimfire Ammo is Made — CCI/Speer Factory Tour Video

22 .22 Plinkster Youtube Video CCI Speer Rimfire Ammo Ammunition plant Lewiston Idaho

22Plinkster Tours CCI/Speer Idaho Factory
Trickshot artist and YouTube host 22Plinkster recently got a chance to tour the CCI/Speer production facility in Lewiston, Idaho. This large plant produces both rimfire and centerfire ammunition. While touring the plant, 22Plinkster was allowed to capture video showing the creation of .22 LR rounds from start to finish. This is a fascinating video, well worth watching.

This revealing video shows all phases of .22 LR ammo production including cupping, drawing, annealing, washing, drying, head-stamping, priming, powder charging, bullet seating, crimping, waxing, inspection, and final packaging. If you’ve got ten minutes to spare, we really recommend you watch the video from start to finish. You’ll definitely learn some new things about rimfire ammo.

.22 Plinkster was literally up to his neck in ammo while touring the CCI/Speer Idaho ammo plant. He says: “This was truly a dream come true for me. I can’t thank the people at CCI and Speer enough for allowing me to do this. I couldn’t possibly show everything that went on at the factory. However, hopefully I showed you enough for you to grasp the concept of how rimfire [ammo] is made.”

22 .22 Plinkster Youtube Video CCI Speer Rimfire Ammo Ammunition plant Lewiston Idaho

Speer Brothers Brought Ammo Production to Lewiston
Here is an interesting historical footnote. Today’s large CCI/Speer operation in Idaho can be traced back to the companies founded by the Speer brothers. After settling in Lewiston in 1944, Vernon Speer started Speer Bullets. A few years later, in 1951, Vernon’s brother Dick (with partner Arvid Nelson) started Cascade Cartridges Inc., a producer of small-arms ammunition and primers. Yes, as you may suspect, Cascade Cartridges Inc. is now CCI, a Vista Outdoor company, and one of the largest manufacturers of primers and loaded ammunition. Today, the CCI/Speer Lewiston plant produces both Speer bullets and CCI-branded ammunition and primers. Vista Outdoor’s predecessor, ATK, acquired the plant in 2001. Vernon Speer died in 1979, and Dick Speer died in 1994.

Permalink - Videos, Bullets, Brass, Ammo 2 Comments »