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November 7th, 2016

Bargain Finder 60: 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. Amazon — Howard Leight Electronic Muffs, $26.99

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

Act quickly — this is a DEAL of the DAY on Amazon! We’ve never seen a lower price on these popular electronic muffs, which are Amazon’s #1 seller in the category. The price goes back up tomorrow! 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 $26.99 (Deal of the Day). See All Price Options. NOTE: For regular, sustained shooting we recommend muffs and/or earplugs with a higher NRR rating.

2. CDNN Sports — Ruger American Ranch Rifle (Tan), $349.99

Ruger American Ranch Rifle 5.56 .223 223 Remington Varmint Bolt Action

Here’s a nice little varmint rifle from Ruger with good features and performance at a killer price: $349.99. You could pay that much just for a barrel. This .223 Rem rifle features a 16.5″ hammer-forged barrel barrel threaded 1/2″-28 at the muzzle for brake or suppressor. The action, which features a 70° three-lug bolt, and Picatinny-style scope rail, sits in an aluminum bedding block. The crisp trigger adjusts down to 3 pounds. With a weight (before optics) of 6.1 pounds, this is a handy carry-around varminter. We like this rifle. For $349.99 it’s a steal.

3. Amazon — Caldwell Long Range Target Cam System, $329.49

Amazon Caldwell Precision Long Range Target System Cam Camera

Forum members have purchased this Caldwell Target Cam System and they’ve found that it works reliably, providing a clear signal to any WiFi-enabled mobile device (smartphone, iPad, Laptop). One member specifically tested the unit at 1000 yards and it functioned fine. NOTE: This system does NOT have a zoom camera lens, so you need to position the camera within 10 yards or so of the target. But if you place it to the side a bit, this shouldn’t be a problem. This system comes with a nice, fitted carrying case that holds camera, transceivers, antennas, and stands. You get a very capable system for under $330.00 (Amazon price includes free shipping for Prime members). You can also get this system from Midsouth for $357.02 (shipping extra).

4. Amazon — Cotton Cleaning Patches, 800 for $8.99 – $17.99

Amazon bulk pack patches 800 cotton flannel

Got patches? Here’s a great deal on 100% cotton flannel patches. There are many sizes available, starting at $8.99 for 800 one-inch “17 Cal” patches. For 6mm rifles, we actually like the 1.25″ round “22/223″ sized patches priced at $11.99 for 800. Choose either round patches or square patches in most sizes. We generally like round patches for use with spire-tip jags, but some shooters prefer to wrap their patches around a jag or brush and square patches work better for wrapping. The large, 2″-square .30 Cal patches cost $17.99 for 800.

5. Amazon — Frankford Quick-N-EZ Case Tumbler, $34.99

Amazon Frankford vibratory case cartridge brass tumbler Quick n EZ

Look no further for a great deal on a reliable tumbler. We’ve used this very same machine to tumble both pistol brass and rifle cases. We like the see-through, transparent top and the large capacity — this will hold up to 350 .223 Rem cases. With 1000+ customer reviews on Amazon.com, this Frankford Quick-N-Easy Case Tumbler has earned a 4.5-star rating. If you need a tumbler, you might want to order soon — this is the best price we’ve seen in a while.

6. CDNN Sports — 45 ACP Ruger American Pistol, $399.99

Ruger American Pistol .45 ACP 45 Modular Low Bore Axis Sale

At $399.99, this modern .45 ACP Ruger American Pistol costs hundreds less than premium polymer handguns from Europe. Compared to a Glock 21, it has better sights, a better trigger, and better ergonomics. Compared to an HK USP it has a lower bore axis and is way less expensive. FYI the Ruger’s low bore axis really does reduce felt recoil. The Ruger American pistol has interchangable grip panels so you can adjust the grip to your hand size. Controls are ambidextrous. Bottom line, this is a very good gun that gives up little to Glock, HK, and Walther. Buy American and save hundreds.

7. Amazon.com — RCBS Rockchucker Supreme Press, $126.99

Amazon.com Amazon RCBS Rock Chucker Supreme Single Stage Reloading Press Sale

The RCBS Rock Chucker remains a classic — a big, strong, versatile press that can handle most reloading chores with ease. And now you can get a genuine Rock Chucker Supreme for $126.99 — a very good deal. The Rock Chucker offers plenty of leverage for case-sizing and the “O” is tall enough for long cartridges. The Rock Chucker has a very strong base and should last a lifetime. We’re not fans of the Rock Chucker’s priming system but most serious reloaders use a separate priming tool.

8. 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.

9. Bullets.com — Norma .22LR Ammo (Match 22 & Tac 22)

Norma Match 22 Tac .22 LR Ammo rimfire ammunition bullets.com

Need quality .22 LR rimfire ammo at an affordable price? Consider Norma. Most folks think Norma only produces centerfire ammo and cartridge brass. As a result, people haven’t been looking for Norma rimfire ammo. Their loss is your gain. Accurate, reliable Norma .22 LR ammunition is in-stock right now at leading online vendors. This is good quality ammo, made in Europe. Bullets.com has Norma Tac-22 ammo in stock at $5.25 per 50-rd box (SKU: BL7819). In addition, Bullets.com offers Norma Match-22 ammunition at $7.50 per 50-rd box (SKU: BL11887).

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November 7th, 2016

Extreme Long Range: Understanding the Coriolis Effect

Whittington Coriolis Effect
Photo by Dustin Ellermann at Whittington Center Range.

The Coriolis Effect comes into play with extreme long-range shots like this (2100 yards at Raton, NM). The rotation of the earth actually moves the target a small distance (in space) during the long duration of the bullet’s flight.

Coriolis Effect Bryan Litz Applied BallisticsWhen you’re out at the range, the Earth seems very stable. But it is actually a big sphere zooming through space while spinning around its axis, one complete turn every 24 hours. The rotation of the earth can create problems for extreme long-range shooters. During extended bullet flight times, the rotation of the planet causes an apparent deflection of the bullet path over very long distances. This is the ballistics manifestation of the Coriolis Effect.

Bryan Litz of Applied Ballistics has produced a short video that explains the Coriolis Effect. Bryan notes that Coriolis is “a very subtle effect. People like to make more of it than it is because it seems mysterious.” In most common shooting situations inside 1K, Coriolis is not important. At 1000 yards, the Effect represents less than one click (for most cartridge types). Even well past 1000 yards, in windy conditions, the Coriolis Effect may well be “lost in the noise”. But in very calm conditions, when shooting at extreme ranges, Bryan says you can benefit from adjusting your ballistics solution for Coriolis.

Bryan explains: “The Coriolis Effect… has to do with the spin of the earth. You are basically shooting from one point to another on a rotating sphere, in an inertial reference frame. The consequence of that is that, if the flight time of the bullet gets significantly long, the bullet can have an apparent drift from its intended target. The amount [of apparent drift] is very small — it depends on your latitude and azimuth of fire on the planet.”

Coriolis Effect Bryan Litz Applied Ballistics

Coriolis is a very subtle effect. With typical bullet BCs and velocities, you must get to at least 1000 yards before Coriolis amounts to even one click. Accordingly, Bryan advises: “Coriolis Effect is NOT something to think about on moving targets, it is NOT something to think about in high, uncertain wind environments because there are variables that are dominating your uncertainty picture, and the Coriolis will distract you more than the correction is worth.”

“Where you could think about Coriolis, and have it be a major impact on your hit percentage, is if you are shooting at extended range, at relatively small targets, in low-wind conditions. Where you know your muzzle velocity and BC very well, [and there are] pristine conditions, that’s where you’re going to see Coriolis creep in. You’ll receive more refinement and accuracy in your ballistics solutions if you account for Coriolis on those types of shots. But in most practical long-range shooting situations, Coriolis is NOT important. What IS important is to understand is when you should think about it and when you shouldn’t, i.e. when applying it will matter and when it won’t.”

The Coriolis Effect — General Physics
The Coriolis Effect is the apparent deflection of moving objects when the motion is described relative to a rotating reference frame. The Coriolis force acts in a direction perpendicular to the rotation axis and to the velocity of the body in the rotating frame and is proportional to the object’s speed in the rotating frame.

A commonly encountered rotating reference frame is the Earth. The Coriolis effect is caused by the rotation of the Earth and the inertia of the mass experiencing the effect. Because the Earth completes only one rotation per day, the Coriolis force is quite small, and its effects generally become noticeable only for motions occurring over large distances and long periods of time. This force causes moving objects on the surface of the Earth to be deflected to the right (with respect to the direction of travel) in the Northern Hemisphere and to the left in the Southern Hemisphere. The horizontal deflection effect is greater near the poles and smallest at the equator, since the rate of change in the diameter of the circles of latitude when travelling north or south, increases the closer the object is to the poles. (Source: Wikipedia)

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November 7th, 2016

Sierra Introduces New 195-grain, .30-Caliber Tipped MatchKing

Sierra .30 .308 30-cal caliber Tipped MatchKing TMK bullet G1 BC F-TR long range .30-cal

Sierra has just announced a new, high-BC .30-caliber projectile. This provides a very interesting new option for F-TR competitors and long-range benchrest shooters. The new 195-grain Tipped MatchKing (TMK) boasts an impressive 0.610 G1 Ballistic Coefficient. That compares well with any conventional bullet in this caliber and weight range. The key to the high BC is the green acetal resin tip that lowers drag while making the BC more consistent for every bullet in the box. NOTE: This .30-caliber 195 grain TMK requires a twist rate of 1:10” or faster to stabilize.

Sierra .30 .308 30-cal caliber Tipped MatchKing TMK bullet G1 BC F-TR long range .30-cal

The new 30 cal. 195 grain Tipped MatchKing® bullets will be available in 500-ct boxes (product #7795C) with a $243.84 MSRP as well as 100-ct boxes (product #7795) with MSRP of $51.19 per box. Note, this new 195gr TMK is designed for competition use — primarily as a paper-puncher. Sierra says: “Tipped MatchKing® bullets are not recommended for most hunting applications.”

New Product Tip from EdLongrange. We welcome reader submissions.
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November 6th, 2016

Burn Baby Burn — The Great SAAMI Ammo FIRE TEST

This important video shows what really happens when loaded ammunition burns. You will probably be surprised. Contrary to Hollywood notions, the ammo doesn’t ignite in a massive explosion. Far from it… basically the rounds “cook off” one by one, and the bullets release at relatively low velocity. We’ve featured this SAAMI research project before, but it is worth reprising for those who have not yet seen the burn tests.

A couple years back, SAAMI released an important video concerning ammo and fire. With professional fire-fighters standing by, over 400,000 rounds of ammo were incinerated in a series of eye-opening tests. If you haven’t had the chance to view this video yet, you should take the time to watch it now

The Sporting Arms and Ammunition Manufacturers’ Institute (SAAMI) has produced an amazing 25-minute video that shows what actually happens to sporting ammunition involved in a fire. This video shows the results of serious tests conducted with the assistance of professional fire crews. We strongly recommend you watch this video, all the way through. It dispels many myths, while demonstrating what really happens when ammunition is burned, dropped, or crushed.

Watch SAAMI Ammunition Testing Video

Video Timeline

  • 2:10 Impact Test (ignited outside firearm)
  • 3:40 65-foot Drop Test
  • 5:08 Bullet Impact (.308 Win firing)
  • 7:55 Blasting Cap Attacks
  • 9:55 Bulldozer and Forklift Tests
  • 12:20 Boxed Ammo Bonfire
  • 15:37 Bonfire without Packaging
  • 17:21 Retail Store Simulation Burn
  • 20:55 Truck Trailer Burn

Over 400,000 rounds of ammunition were used in the tests. Some of the footage is quite remarkable. Testers built a bonfire with 28,000 rounds of boxed ammo soaked in diesel fuel. Then the testers loaded five pallets of ammo (250,000 rounds) in the back of a semi-truck, and torched it all using wood and paper fire-starting materials doused with diesel fuel.

The video shows that, when ammo boxes are set on fire, and ammunition does discharge, the bullet normally exits at low speed and low pressure. SAAMI states: “Smokeless powders must be confined to propel a projectile at high velocity. When not in a firearm, projectile velocities are extremely low.” At distances of 10 meters, bullets launched from “cooked-off” ammo would not penetrate the normal “turn-out gear” worn by fire-fighters.

We are not suggesting you disregard the risks of ammo “cooking off” in a fire, but you will learn the realities of the situation by watching the video. There are some amazing demonstrations — including a simulated retail store fire with 115,000 rounds of ammo in boxes. As cartridges cook off, it sounds like a battery of machine-guns, but projectiles did not penetrate the “store” walls, or even two layers of sheet-rock. The fire crew puts out the “store fire” easily in under 20 seconds, just using water.

Additional Testing: Drop Test, Projectile Test, Crush Test, Blasting Cap Test

Drop Test
The video also offers interesting ammo-handling tests. Boxes of ammo were dropped from a height of 65 feet. Only a tiny fraction of the cartridges discharged, and there was no chain-fire. SAAMI concludes: “When dropped from extreme heights (65 feet), sporting ammunition is unlikely to ignite. If a cartridge ignites, it does not propagate.”

Rifle Fire Test
SAAMI’s testers even tried to blow up boxes of ammunition with rifle fire. Boxes of loaded ammo were shot with .308 Win rounds from 65 yards. The video includes fascinating slow-motion footage showing rounds penetrating boxes of rifle cartridges, pistol ammo, and shotgun shells. Individual cartridges that were penetrated were destroyed, but adjacent cartridges suffered little damage, other than some powder leakage. SAAMI observed: “Most of the ammunition did not ignite. When a cartridge did ignite, there was no chain reaction.”

Bulldozer Crush Test
The test team also did an amazing “crush-test” using a Bulldozer. First boxes of loaded ammo, then loose piles of ammo, were crushed under the treads of a Bulldozer. A handful of rounds fired off, but again there was no chain-fire, and no large explosion. SAAMI observed: “Even in the most extreme conditions of compression and friction, sporting ammunition is unlikely to ignite. [If it does ignite when crushed] it does not propagate.”

Blasting Cap Test
Perhaps most amazingly, the testers were not able to get ammunition to chain-fire (detonate all at once), even when using blasting caps affixed directly to live primers. In the SAAMI test, a blasting cap was placed on the primer of a round housed in a large box of ammo. One cartridge ignited but the rest of the boxed ammo was relatively undamaged and there was no propagation.

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November 6th, 2016

Video Shows Lake City Ammo Production Process

Lake City Ammunition PlantWhat’s the next best thing to a stockpile of gleaming, freshly-loaded ammo? How about a movie showing gleaming, freshly-loaded ammo being made — from start to finish? The five-minute video below shows the ammunition production process at the Lake City Army Ammunition Plant, a division of ATK. Lake City is the largest producer of small arms ammunition for the U.S. military, producing roughly four MILLION small-caliber rounds every day.

This promotional video does go overboard at times (too many smiling employees gushing about quality control). Still, it is fascinating to watch the process of creating cartridges — from the drawing (or extrusion) of raw brass into casings to the placement of projectiles and primers.

Quick History of Lake City Ammunition Plant
Lake City Army Ammunition Plant (LCAAP) is a 3,935-acre government-owned, contractor-operated facility in Independence, Missouri that was established by Remington Arms in 1941 to manufacture and test small caliber ammunition for the U.S. Army. The facility has remained in continuous operation except for one 5-year period following World War II. As of July 2007, the plant produced nearly 1.4 billion rounds of ammunition per year. Remington Arms operated the plant from its inception until 1985, when operations were taken over by Olin Corporation. Since April 2001, it has been operated by Alliant Techsystems (ATK).

Credit GunsForSale.com for finding this YouTube Video.

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November 5th, 2016

Guns of Hollywood — Take the Quiz

gun movie movies quiz test history National Firearms Museum

Throughout the cinematic history of Hollywood, guns have been popular elements. You’ll find firearms featured in all sorts of movies — westerns, historical war dramas, spy flicks, and action thrillers. The National Firearms Museum has a Hollywood Guns exhibit dedicated to some of cinema’s most iconic firearms. Think you can name these famous guns found in the exhibit? Take the quiz and put your knowledge to the test. It will take a good knowledge of cinema AND guns to do well. FWIW, Your Editor just did this quiz on the NRA Blog Website and got 6 out of 7 answers correct. Can you beat that score?

NOTE: The quiz skips one question. You’ll see a reference to “Question Eight” but there are actually only seven (7) questions.

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November 5th, 2016

If You Could Own Just One Long Gun — What Would It Be?

Sierra Bullets Gun list .30-06 Springfield .308 Winchester
Custom hunting rifle photo courtesy Kilimanjaro Rifles.

The folks at Sierra Bullets asked a few staff bulletsmiths a classic question about guns: “If you could own only one firearm which one would you choose?” There were many interesting answers including a “cheater” response — the drilling — which is really two guns in one. The most-often mentioned chambering was the venerable .30-06. Respondents cited its versatility, hunting prowess, and ready availability of ammo. The popular .308 Winchester, as expected, got mentions as did its cousins the .243 Win and 7mm-08. There were quite a few votes for classic lever guns, as well as 12-gauge shotguns. Two bulletsmiths cited the .22 LR, and we can certainly see the logic in that answer. The little rimfire cartridge is versatile, quiet, and inexpensive.

We ask our readers the same question — if you could only have one long gun, what type of firearm would it be? List the gun type and chambering in the comments section.

If You Could Have Just One Long-Gun — ANSWERS:

Media Relations Manager Carroll Pilant answered: “I would NEVER own only one gun. If I HAD to pick one, it would be a drilling in 12 gauge over .30-06.”

Ballistic Technician Rich Machholz answered: “The early tang safety Ruger M77s pretty much have all you could want in a bolt gun, but I do like the Winchester lever guns and the combination guns, particularly the drillings. Since I have the first two, I’m going for a Doug Turnbull 1886 or a side by side 20 gauge over .223 drilling.”

Ballistic Technician Philip Mahin answered: “More than likely it would have to be a bolt action .30-06. The reliability is legendary on a wide range of game animals and factory ammunition has still been available at my local stores even in these tough times.”

.30-06 Springfield cartridge diagram

Ballistic Technician Duane Siercks answered: “If I had to boil it all down to one gun, it would probably be a .30-06. I have a Remington 700C (custom shop gun) that has worked very well for anything and everything I have ever wanted to do with it.”

Ballistic Technician Paul Box answered: “A .22 Rimfire.”

Chief Ballistician Tommy Todd answered: “Remington 700 in .308 Winchester.”

Sierra Bullets Gun list .30-06 Springfield .308 Winchester

VP – Sales & Marketing Matt Reams answered: “A light weight Kimber in 25-06.”

Production Toolsetter Brad Vansell answered: “Savage weather warrior 7mm-08 is my rifle of choice.”

Production Toolsetter Dan Mahnken answered: “The .308 Winchester rifle — [based on the] wide range of bullets made and the wide range of things that one can hunt with it.”

Process Engineer David Palm answered: “Savage action 243 Winchester.”

Ballistic Technician Gary Prisendorf answered: “Probably a .22 LR. It may not be the best choice, but you could use it for about anything if you really had to.”

Production Manager Chris Hatfield answered: “Beretta A300 Outlander 12 gauge.”

Machine Shop Manager Craig Westermier answered: “12 gauge shotgun.”

This article original appeared in the Sierra Bullets Blog.

Permalink Bullets, Brass, Ammo, Hunting/Varminting 8 Comments »
November 5th, 2016

New Hodgdon CFE BLK Powder — Great for Small Cartridges

CFE BLK .223 223 Blackout AAC powder varmint Fireball reduced fouling January 2017
NOTE: Despite the “BLK” in the name, this is a NOT a black powder substitute. This is a modern smokeless powder suitable for a wide variety of popular cartridges.

Hodgdon has announced a new “faster” variant of its popular CFE 223 powder. That’s good news for shooters of small varmint cartridges. Hodgdon’s new CFE BLK (named after the .300 AAC Blackout cartridge) has a faster burn rate than the original CFE 223. That makes CFE BLK ideal for small cartridges such as the .17 Hornet and .221 Fireball. The original CFE 223 propellant was formulated for reduced copper fouling (“CFE” in the name refers to “Copper Fouling Eraser”). New CFE BLK shares this reduced fouling technology which was developed originally for the U.S. military. Many of our Forum members have tried CFE 223 and confirmed that is performs “as advertised” — with less copper fouling that most other propellants. That’s a big benefit for varmint shooters, who may put hundreds of rounds through a barrel in a single day on the varmint fields.

Optimized for the .300 AAC Blackout cartridge, CFE BLK works great for .300 Blackout loads in AR-type rifles throughout the range of bullet weights. Moreover, CFE BLK is perfect for subsonic, reduced loads. In addition, Hodgdon reports that CFE BLK performs superbly in many smaller-capacity cartridges, in particular varmint cartridges such as the .17 Hornet, .17 Ackley Hornet, .218 Bee, .221 Fireball. CFE BLK is also well-suited for the 6.8 Remington SPC and the 7.62X39 Russian cartridge.

CFE BLK Meters Well and Burns Clean
CFE BLK is a spherical (ball) powder. Hodgdon reports the CFE BLK meters well, allowing reloaders to throw very consistent charges every time: “This fine powder meters like a dream and leaves no copper residue, extending accuracy for longer shooting periods, and making clean-up quick and easy.”

CFE BLK Should Be on Dealers’ Shelves in January 2017
Starting in January, 2017, CFE BLK powder will be available in both one-pound (1-lb.) and eight-pound (8-lb.) containers. Check with leading vendors such as Bruno’s, Midsouth, and Powder Valley. By the end of 2016, you should find complete load data for CFE BLK on the Hodgdon Reloading Data Center at www.HodgdonReloading.com.

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November 4th, 2016

Mysteries Revealed — How Cartridge Brass is Made

deep draw cartridge brass animated gif
Deep-Draw Ram Illustration from Demsey Mfg.

When we first ran this story a while back, it generated great interest among readers. By popular request, we’re reprinting this story, in case you missed it the first time around. — Editor

Rifle cartridge brass manufacturingPrecision shooters favor premium brass from Lapua, Norma, 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.

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.

Lake City Brass bunter

The 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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November 3rd, 2016

2016 Shaping Up as Record-Setting Year for Gun Sales

NICS Gun Sales Obama gun purchases background checks

By all indications, Americans are buying more guns than ever before. Some pundits have joked that President Obama is the “greatest gun salesman in history”. Looking at NICS (FBI instant check) records, Dean Weingarten of the Gun Watch Blog concludes that 2016 will see new records set, likely surpassing 2015 as the year with the highest number of gun sales ever. CLICK Link to Gun Watch.

Weingarten writes:

The private firearm stock in the United States will have increased by nearly 100 million firearms, or 30%, during the two terms of the Barack Obama presidency.

Many indicators show a soaring and diverse level of gun ownership. Carry permits are burgeoning, approaching 15 million and more. Gun ownership among women and minorities is at an all-time high.

This October continued the record-breaking pace to establish 2016 as the year with the most gun sales ever. The 2016 NICS checks are far ahead of those for 2015, the previous record holder. In October 2016 there were 2,333,539 National Instant Checks done. In 2015, the NICS done in October were 1,976,759.

In 2015, the total NICS checks for the year were 23,141,970. In 2016, through October, they were 22,206,233. That is less than 1 million below the total for 2015, with the two biggest months in 2016 yet to happen. Last year there were 17,584,346 by the end of October.

NICS Gun Sales Obama gun purchases background checks
A record number of NICS Checks may take place in 2016. Photo: Benton Co. Gunworks.

The numbers are 26.3% ahead of where 2015 was at this time. If this pace continues, 2016 will end up with 29.2 million background checks for the year.

Given the NICS numbers, there will probably be 17 to 18 million guns added to the private stock in 2016. That would increase the total number to over 400 million private firearms in the United States.

Who would have thought that President Obama would be the record-setting, all time champion, gun salesman? The total NICS checks will reach over 250 million by years end. That will be over 150 million firearms added to the private stock in the last 18 years (there are 0.6 sales per check on average). Over 37% of the private firearms stock will be less than 18 years old.

©2016 by Dean Weingarten: Permission to share is granted when this notice is included.

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November 3rd, 2016

Don’t Try to Trickle These Sticks… Powder for Big Naval Guns

DuPont artillery naval powder cannon gun kernel propellant stick

Story by Boyd Allen
While many top competitive shooters trickle their stick powder charges to a kernel or two, that would be impractical when loading charges for giant naval guns. You may be surprised, but the shells fired by the U.S. Navy’s massive 14″ and 16″ naval guns were also propelled by stick-type extruded powders. You couldn’t trickle these ‘kernels’ though — a single stick or ‘grain’ can be over 2″ long. Take a look…

In connection with a Benchrest Central discussion that drifted to the subject of powders used in large naval guns, I heard from Joe McNeil, whose father was involved in manufacturing those very propellants as a DuPont employee. Joe writes:

“My Dad worked for the DuPont company for over 40 years. Every time the nation went to war he was assigned to the gun powder plants which DuPont ran for the government for $1.00 per year! His last assignment was at the Indiana Ordnance Plant in Jefferson, Indiana from 1952 through 1958. He had a display case made of all of the different powders made at the plant and left it to me. That’s why I have a grain of 16″ gun powder. He took me out to the Jefferson proving grounds once when they tested the powder in a 16″ gun. We watched from a half-mile away but it left a lasting impression when they fired that gun. They actually had a set of rings they fired through to test the performance of the powder and shell. This was a truly fond memory of my Dad and his work.”

Here are some pictures of the gun powder “grains” made during the Korean War at the Indiana Ordnance Works where Joe McNeil’s father worked.

DuPont artillery naval powder cannon gun kernel propellant stick

DuPont artillery naval powder cannon gun kernel propellant stick

Above is the display case with the different powders manufactured at the DuPont plant. They include: 37 MM/AA, 75MM Pack Howitzer, 50 Cal. 5010, 20 MM 4831, 30 Cal. 4895, 76 MM, 3″, 5″, 90 MM, 4.7″, 240MM, 8″, 280 MM, 175 MM, 155 MM Howitzer, 155 MM Gun M.P., 8″ Gun M.P., 12″, 14, 16″. There are different-sized ‘grains’ for specific rounds.

Permalink Bullets, Brass, Ammo 2 Comments »
November 3rd, 2016

Recoil Comparison .223 Rem vs. 6BR vs. .308 Win

6mmBR NormaMany visitors to the site ask us, “I’ve got a .223 and .308. What will a 6mmBR Norma (6BR) give me that I’m not getting already?” Well first you will probably average consistently smaller groups than your current .223 or .308 rifle (assuming the 6BR has a quality barrel and trigger). A good .308 Winchester can be superbly accurate, no question about that, but the lesser recoil of the 6BR works in the shooter’s favor over a long string of fire. Even with a Rem 700 or Savage action factory action, a 6BR with a benchrest stock, premium barrel, and a high-quality chambering job should deliver 5-shot groups in the high twos to mid-threes, provided you do your job. We have one 6BR rifle that shoots Lapua factory-loaded 6BR ammunition in the low twos and high ones. That’s exceptional, we admit, but it still shows how the 6BR is an inherently accurate cartridge, even with factory loads.

Compared to a .223, the 6BR offers a much better selection of high-BC projectiles, and will deliver considerably more power on the target. Compared to the .308 shooting 168gr MatchKings, a 6BR shooting 105-107gr bullets offers better ballistics all the way out to 1000 yards. Plus, for most people, the 6BR is just easier to shoot than a .308. Recoil is less than half of the .308 cartridge. Both the .308 and 6BR chamberings offer good barrel life, but the 6BR uses 15-18 grains less powder, saving you money. On the other hand the .308 is the designated cartridge for F-TR and Palma shooting, so it may be a more versatile chambering for Long-Range competition. So which would we choose between the 6BR and the .308? Actually we think you should have both. The 6BR is my favorite cartridge out to 500 yards, and I like the .308 Win for F-TR. And… if you want to shoot at the World Fullbore Championships this week at Camp Perry there’s only one choice — a .308 Win.

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