Real Avid sells a unique multi-tool designed expressly for rifles and shotguns. The $29.99 Gun Tool™ combines 18 of the most commonly used long gun tools in a compact package. The Gun Tool boasts three Torx wrenches (T20; T15; T10), two Allen hex drives (3/32″; 5/32″), and four screwdriver blades (1/8″ flat; 3/16″ flat; Phillips 1 & 2). In addition, there is a magnetic 3/16″ driver, a pin punch, and a stainless claw blade useful for opening shipping boxes or trimming target backers.
The most unique feature of the Gun Tool is a stepped, multi-size choke-tube wrench that fits six shotgun bores from .410 all the way up to 10 gauge (see photo below right). For active shotgunners, that provides great versatility in a small package.
Praise from Respected Reviewers
In 2012, the NRA’s American Hunter magazine awarded The Gun Tool their Golden Bullseye award in the “Gear of the Year” category. The Gun Tool has also been awarded an outstanding 100% approval rating and a full endorsement by the North American Hunting Club.
Noted gun journalist Jim Shepard wrote: “I’ve been playing with ‘The Gun Tool’… and I’ve found it to be a pretty promising device that really should find a place in lots of range bags. If you’re a long gun shooter, it has something you’ll eventually need in the way of a tightening/loosening/adjusting tool.” Jim cautions that the claw blade does not lock into place.
Today Shooting USA TV features the annual President’s Rifle Match at Camp Perry, Ohio. Also known as the “President’s 100″, this major Service Rifle match attracts nearly one thousand competitors to the historic ranges of Camp Perry each summer. This is a challenging, multi-stage competition that tests marksmanship and equipment alike. NOTE: This week’s episode also features the iconic M1 Garand rifle in the show’s History’s Guns segment.
Shooting USA SHOW TIMES: This Shooting USA Episode airs Wednesday, March 5, 2025 at 9:00 PM Eastern and Pacific; 8:00 PM Central. If you miss the regular broadcast, you can stream the show online at any time on Vimeo for $0.99 per episode.
Looking downrange at the 600-yard targets. Camp Perry photos courtesy Dennis Santiago.
The historic National President’s 100 Match is a huge event. In recent years, there have been over 1000 ranked competitors from throughout the nation, making this one of the biggest rifle events of the year. The top 100 competitors overall in the President’s Rifle Match are designated as the President’s 100. They receive President’s 100 medallions and certificates.
The President’s 100 Rifle Match is richly steeped in history. This unique match was first held in 1878. Here’s the view from the line at 600 yards:
President’s 100 Match Shoot Off! — The Top 20 shooters face off while everyone watches.
President’s 100 Course of Fire
There is a three-yardage, four-stage Course of Fire for the President’s Rifle Match Course of Fire. Firing is done on the SR target at 200 and 300 yards and the MR target at 600 yards. Scores in stages 1-3 determine the President’s 100 and the final rankings of competitors in 21st place and below. Scores in stages 1-4 determine the match winner and the final rankings in places 1-20. If there is a tie for first place (equal total and X-count), the tied shooters will continue to fire one-shot-at-a-time until the tie is broken. No sighters are permitted in National Trophy Rifle Matches.
Origins of the President’s Match The National Rifle Association’s President’s Match was instituted in 1878, as the American Military Rifle Championship Match. In 1884, the name was changed to the President’s Match for the Military Rifle Championship of the United States. It was fired at Creedmoor, New York until 1891. In 1895, it was reintroduced at Sea Girt, New Jersey. Today, the match is held at Camp Perry, Ohio.
The President’s Match was patterned after the Queen’s Match for British Volunteers. That British competition was started in 1860 by Queen Victoria and the NRA of Great Britain to increase the ability of Britain’s marksmen following the Crimean War.
The tradition of making a letter from the President of the United States the first prize began in 1904 when President Theodore Roosevelt personally wrote a letter of congratulations to the winner, Private Howard Gensch of the New Jersey National Guard.
After a hiatus in the 1930s and 1940s, The President’s Match was reinstated in 1957 at the National Matches as “The President’s Hundred.” The 100 top-scoring competitors in the President’s Match were singled out for special recognition.
In 1903, President Theodore Roosevelt’s vision of skilled marksmen among American citizens came to life as the National Matches; civilians on the firing line with the service weapon of the day, preparing for training in case of a time of war. T.R.’s vision is now a tradition, attracting thousands of people for five weeks of shooting competitions each year at Camp Perry in Ohio.
The National Matches have been held at Camp Perry since 1907. The range is located along the shores of Lake Erie in northern Ohio near Port Clinton. The site was first acquired in 1906, in response to the need for a larger facility for military training and the NRA’s shooting programs. In 1906 Gen. Ammon B. Crichfield, Adjutant General of Ohio, ordered construction of a new shooting facility on the shores of Lake Erie, 45 miles east of Toledo, Ohio. The original land for Camp Perry was purchased in 1906, and the reservation was named after Commodore Oliver Hazard Perry, the American naval commander who won the Battle of Put-in-Bay during the War of 1812. On August 19, 1907, Cpl. L. B. Jarrett fired the first shot at the new Camp Perry Training Site. And that year, 1907, Camp Perry held its first National Pistol and Rifle Championship events.
As we wrap up the winter season there remains plenty of rain and snow in many areas of the country. With rain and snow comes increased moisture in the air, i.e. increased humidity. And that, in turn, can affect how your powders perform by altering their burn rates.
Most shooters realize that significant changes in temperature will alter how powders perform. That’s why you want to keep your loaded ammo out of the hot sun, and keep rounds out of a hot chamber until you’re ready to fire. But there are other factors to be considered — HUMIDITY for one. This article explains why and how humidity can affect powder burn rates and performance.
We’ve all heard the old adage: “Keep your powder dry”. Well, tests by Norma have demonstrated that even normal environmental differences in humidity can affect the way powders burn, at least over the long term. In the Norma Reloading Manual, Sven-Eric Johansson, head of ballistics at Nexplo/Bofors, presents a very important discussion of water vapor absorption by powder. Johansson demonstrates that the same powder will burn at different rates depending on water content.
Powders Leave the Factory with 0.5 to 1.0% Water Content
Johansson explains that, as manufactured, most powders contain 0.5 to 1% of water by weight. (The relative humidity is “equilibrated” at 40-50% during the manufacturing process to maintain this 0.5-1% moisture content). Importantly, Johansson notes that powder exposed to moist air for a long time will absorb water, causing it to burn at a slower rate. On the other hand, long-term storage in a very dry environment reduces powder moisture content, so the powder burns at a faster rate. In addition, Johansson found that single-base powders are MORE sensitive to relative humidity than are double-base powders (which contain nitroglycerine).
Tests Show Burn Rates Vary with Water Content
In his review of the Norma Manual, Fred Barker notes: “Johansson gives twelve (eye-opening) plots of the velocities and pressures obtained on firing several popular cartridges with dehydrated, normal and hydrated Norma powders (from #200 to MRP). He also gives results on loaded .30-06 and .38 Special cartridges stored for 663 to 683 days in relative humidities of 20% and 86%. So Johansson’s advice is to keep powders tightly capped in their factory containers, and to minimize their exposure to dry or humid air.”
Confirming Johansson’s findings that storage conditions can alter burn rates, Barker observes: “I have about 10 pounds of WWII 4831 powder that has been stored in dry (about 20% RH) Colorado air for more than 60 years. It now burns about like IMR 3031.”
What does this teach us? First, all powders start out with a small, but chemically important, amount of water content. Second, a powder’s water content can change over time, depending on where and how the powder is stored. Third, the water content of your powder DOES make a difference in how it burns, particularly for single-base powders. For example, over a period of time, a powder used (and then recapped) in the hot, dry Southwest will probably behave differently than the same powder used in the humid Southeast.
Reloaders are advised to keep these things in mind. If you want to maintain your powders’ “as manufactured” burn rate, it is wise to head Johannson’s recommendation to keep your powders tightly capped when you’re not actually dispensing charges and avoid exposing your powder to very dry or very humid conditions. The English-language Norma Reloading Manual (2d. Edition) is available from the Norma Brand Shop and ReloadingSolutions.com.
Real-World Example — “Dry” H4831sc Runs Hotter
Robert Whitley agrees that the burn rate of the powder varies with the humidity it absorbs. Robert writes: “I had an 8-lb. jug of H4831SC I kept in my detached garage (it can be humid there). 43.5-44.0 gr of this was superbly accurate with the 115 Bergers out of my 6mm Super X. I got tired of bringing it in and out of the garage to my house for reloading so I brought and kept the jug in my reloading room (a dehumidified room in my house) and after a few weeks I loaded up 43.5 gr, went to a match and it shot awful. I could not figure out what was going on until I put that load back over the chronograph and figured out it was going a good bit faster than before and the load was out of the “sweet spot” (42.5 – 43.0 gr was the max I could load and keep it accurate when it was stored in less humid air). I put the jug back in the garage for a few weeks and I now am back to loading 43.5 – 44.0 gr and it shoots great again. I have seen this with other powders too.”
If you have two jugs of the same powder, one kept in a room in your house and one somewhere else where it is drier or more humid, don’t expect the two jugs of the same lot of powder to chrono the same with the same charge weights unless and until they are both stored long enough in the same place to equalize again.
High-contrast targets make aiming and seeing bullet impacts easier. EZ2C Targets, a family business in Pennsylvania, has developed a series of very bright, high-contrast targets printed with eye-popping fluorescent red/orange, bright green, and Deep Black Inks. These are available from the EZ2C online store. A set of 11″x17″ Hi-Viz targets printed on quality white paper costs $11.95 for either 25 or 40 sheets, depending on target design. A wide variety of designs are available — Bulleyes, Grids, Silhouettes, and Diamonds as well as many specialty targets, including mini self-adhesive targets.
EZ2C Fun Challenge Targets
EZ2C’s Battleship Target (Style 22) would be great for precision rifles at 100 or 200 yards. The red circles are about 3/4″ in diameter. That’s 0.36 MOA at 200 yards. That’s a good test for an accurate rifle (and for any shooting pals who boast that their guns can shoot “1/4 MOA all day long”.) The Dartboard target is great for a two-man shooting competition. You can shoot the numbers in order, or for more challenge, shoot the red rings (for each number), from the outer diameter to the middle. Just as in a real darts game, there are many variations.
Here are some other EZ2C Targets. The pistol diagnosis target (second from left) shows how to correct your aim and hold, based on where your errant shots fall. The decreasing dots target is a fun challenge for rimfire cross-training. Set it at 200 yards for centerfire.
EZ2C also offers 20 types of 3.5″ x 3.5″ Mini stick-on targets. These are printed with Black Ink on Fluorescent Red or Green Self-Adhesive Label Stock.
Get Customized Targets for Your Club or Business
EZ2C targets can be customized with the name/logo of your gun club or business. This is an excellent way to promote your organization or store. Here’s a suggestion — have your gun club print up customized targets to award as prizes at shooting matches.
Here’s something all shooters need — a smartphone App that calculates bullet-hole group sizes from your own photos. The Ballistic-X App is simple to use. Take a photo of your target, set some values (such as bullet diameter and distance to target), then use the touchscreen to place circles around each hole. The App will calculate group size (in MOA or Mils), distance to point of aim, and provide all the info in an overlay. Then click “save” to record your group for posterity!
This App works well, is relatively easy to set-up, and costs just $7.99. It is available for both Android devices and iOS (Apple) devices. There are other ways to measure group sizes from target images, such as the excellent On-Target program, which we have used for years. However On-Target requires a software installation on a Windows platform desktop or laptop. Ballistic-X is a simple, easy-to-install App with versions for both Android and iOS (Apple) Mobile devices.
The Ballistic-X App has a relatively easy-to-use interface. Of course you can choose either MOA or Milrad group values, and Inch or Metric dimensions. There are various labeling options that provide useful info for Load Development. There is even an ATZ (Adjustment To Zero) feature for adjusting your turrets.
How to Use Ballistic-X App
1. Select Photo Source — Choose Camera to take new photo or get image from Photo Library.
2. Set Reference Values — Select Bullet Diameter and enter Distance to Target.
3. Establish Scale on Image — Mark two points on target photo to set scale. For example, if the target has a 1″-square grid lines, mark two points on grid for 1″ distance.
4. Mark Point Of Aim — Put the central X on the aim point.
5. Designate Shot Locations — Place the green circles around each shot.
6. Finalize Data Display — Position Overlay, select size/color options, and export file.
Android Options — Range Buddy FREE App
Along with Ballistic-X, there is another Mobile App, Range Buddy, that also measures shot groups. Range Buddy is currently offered for Android devices only. It is FREE, but has adverts. Range Buddy isn’t bad, but users complained about the program crashing, and there are compatibility issues with newer phones. We recommend you pay $7.99 and stick with Ballistic-X.
At the request of our readers, we provide select “Deals of the Week”. Every Sunday afternoon or Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.
NOTE: All listed products are for sale to persons 18 years of age or older. No products are intended for use by minors.
Since its introduction, the Garmin Garmin Xero C1 Chronograph has been hugely popular with shooters. This radar chronograph is compact, accurate, reliable and easy to use. And right now you can save $50 off the regular $599.99 price. This excellent compact chrono is on sale now for $549.99 at Graf & Sons or Precision Reloading. Now’s your chance to save $50 on one of the best chronographs on the market. Take advantage of this discount this month.
2. Creedmoor Sports — Major Sightron Scope Sale
⏺️ Big savings on wide selection of zoom and fixed power scopes
Sightron makes good scopes that are popular with benchrest, F-Class, Silhouette and LR shooters. Right now you can save up to $750 on optics with the Sightron Scope Sale at Creedmoor Sports. There are scopes for a variety of disciplines, both zoom and fixed power. Chose from a 4.5X Service Rifle optic up to 10-50X F-Class and LR Benchrest scope. There are also 36X and 45X fixed power scopes popular with Benchresters. Sightron scopes are reliable, and customer services is very good.
3. Amazon — Frankford Arsenal Press and Reloading Kit, $396.07
⏺️ Great Combo Kit at major savings
New hand-loaders can save money with a combo kit that has all the key tools. A great choice is the Frankford Arsenal F-1 Single Stage Essentials Kit (#ad). This combo kit features the very good Frankford Arsenal F-1 Single Stage Press, plus Bench Top Powder Measure with bracket, Perfect Seat Hand Primer, Electronic Calipers, DS-750 Powder Scale, Powder Trickler, Aluminum Powder Funnel Set, and Universal Reloading Tray. This kit has pretty much all you need to start hand-loading except dies.
4. Primary Arms — Howa TRAKR Rimfire Rifle, $169.99
⏺️ Amazing low price on a versatile .22 LR rimfire rifle
Here’s a good .22 LR bolt-action rimfire rifle at an amazingly low price. The lightweight yet rugged Howa TRAKR .22 LR Bolt Action Rifle works for NRL22, target shooting, plinking, and small varmint shooting. The barrel is fitted with iron sights, and the action has scope ring mounts on top. The 1:16″-twist barrel measures 18″ long. The rugged synthetic stock has a Flat Dark Earth (FDE) weather-resistant exterior.
5. Natchez — Frankford Quick-N-Easy Case Tumbler Kit, $79.99
⏺️ We’ve used this Combo Kit for many seasons — very good value
Keeping your brass clean is important (and essential if you anneal). If you’re looking for a new, affordable setup to clean cartridge brass, consider the Frankford Arsenal Quick-N-EZ Case Tumbler Master Kit. You get everything needed to dry-tumble your brass and remove the media. This is all available now for a very low $79.99. You could pay that much for a good vibratory tumbler alone, yet this combo kit includes tumbler, media separator, bucket, brass polish, and media.
6. EuroOptic — Winchester Ammo Sale
⏺️ Attractive pricing on pistol, rifle, and shotgun ammo
Looking for factory rifle, pistol, or shotgun ammo at attractive prices? Then check out the Winchester Ammo Sale at EuroOptic. You find good, volume pricing on quality 9mm, .223 Rem, and .308 Win ammo. There are also major discounts on 12ga shotgun ammo. If you need 9mm ammo, check out this sale.
7. Amazon — SIRUI AM-324 Tripod, $299.00 plus 15% Off
⏺️ Good light yet strong shooting tripod, carbon fiber legs
Tripods are valuable for holding spotting scopes, cameras, and even rifles in PRS/NRL competitions. A good strong yet light-weight tripod is the SIRUI AM-324 Professional Tripod (#ad). This tripod has 32mm (max) carbon fiber tubes which keeps weight down to 4.2 pounds. Yet, this tripod boasts an impressive 39.8 lb/15 kg load capacity. The 40mm ball-head low gravity design provides stability and high load capacity. With damping knob friction control and smooth 360° panning base, you can adjust the shooting angle easily even with a heavy rifle or spotting scope. NOTE: Click the Amazon Coupon box to save an additional 15% for net cost of $216.03.
⏺️ Popular muffs offer good protection while allowing range commands
Protect your hearing with NRR 23 Walker’s Razor Ear Muffs (#ad). These muffs have a low-profile design featuring extra slim ear cups for better clearance on rifle cheek-pieces. These electronic muffs offer 23 dB NRR protection against loud noises and gunshot sounds but you can still hear conversations and range commands. These muffs have two hi-gain microphones providing clear omnidirectional hearing.
9. Amazon — Golden Rod Dehumidifier, $25.99
⏺️ Useful device for all gun safe owners
Here is a good, effective and low-cost tool to control gunsafe humidity and help prevent corrosion on your firearms. The Golden Rod Safe Dehumifier (#ad) is basically a small electric heating rod that helps maintain a proper humidity level in gun safes and storage cabinets. It controls humidity by slightly increasing the surrounding temperature to remove excessive moisture. On sale for $25.99, this is an inexpensive way to prevent corrosion of your valuable firearms and other metal items in storage.
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The IWA Outdoor Classics event in Germany is Europe’s leading outdoor, hunting, and target shooting trade show. The event, often called the “Euro Shot Show”, ran February 27th through March 2nd, 2025 in Nuremberg, Germany. The 2025 IWA Outdoor Classics event showcased a vast collection of products for hunting, target shooting, and the outdoor adventure market. The IWA Outdoor Classics trade show is a huge event, drawing over 1,080 exhibitors from 53 countries. CLICK HERE for descriptions/images of over 500 products on display at the IWA show this year.
Manufacturers and vendors from the hunting, shooting sports, and outdoor segments showcased a vast range of products this year. From hunting, sport shooting, and airsoft firearms to optics and technologies, ammunition, knives, hunting accessories, clothing and outdoor equipment, there was plenty to discover in the nine halls at IWA Outdoor Classics 2025. IWA Outdoor Classics allows buyers and retailers from around the world to see thousands of products from hundreds of manufacturers.
Along with the firearms, optics, stocks, and reloading products, there were many booths featuring outdoor clothing, hunting gear, and shooting accessories.
Many VIPs attended the 2025 IWA Outdoor Classics event. Here is Joachim Herrmann, Bavarian State Minister for the Interior (Bayerischer Staatsminister des Innern).
Here is a stunning, custom Walther pistol with engraved, fancy blued metal and deluxe grip.
For more than 50 years, outdoor and shooting industry companies have come together in Nuremberg to showcase the products and services for hunting and shooting sports. This past week Europe’s leading outdoor trade show hosted more than 1,080 German and international exhibitors in nine exhibit halls. In addition, there was a wide variety of seminars and interactive demonstrations.
The 2025 IWA Outdoor Classics show was a great success. We look forward to next year’s event which will be held February 26 through March 1, 2026. Auf wiedersehen for now — see you next year!
Three-Position Air Rifle (3PAR) shooting is the most popular and fastest-growing form of shooting sports competition for junior shooters (High School age and younger). The Civilian Marksmanship Program (CMP) conducts two primary Three-Position Air Rifle events. First, Precision Air Rifle is modeled after Olympic-style shooting and allows the use of specialized target rifles and equipment. Second, Sporter Air Rifle is designed for new competitors or those who desire to compete with a minimum of equipment and expense.
In both types of shooting, competitors fire at targets at a distance of 10 meters in three different positions, prone, standing and kneeling. Three-Position Air Rifle provides young competitors with competitive shooting sports opportunities that can be offered on a wide variety of easily accessible or easily constructed ranges, with equipment that is commonly available at affordable costs.
The CMP actively promotes Three-Position Air Rifle shooting as a premier youth marksmanship competition by providing low-cost equipment and pellets as well as training materials and competition activities. In addition, other air gun events for juniors and adults are hosted by CMP throughout the year. CMP facilities have Open Public Shooting evenings, and matches for air rifle and air pistol take place at the CMP Marksmanship Centers. CMP ranges are equipped with OpticScore Targets featuring technology by Kongsberg Target Systems.
The new-generation Crosman Challenger PCP (pre-charged pneumatic) Air Rifle is a preferred .177 Sporter Class air rifle for competitive marksmanship programs throughout the country, including the Marine Corps JROTC, Army JROTC, Air Force JROTC, Navy JROTC, American Legion, and 4-H. The $799.90 Challenger PCP is a three-position rifle with a fully adjustable stock, a two-stage, adjustable match grade trigger, a hooded front aperture sight, micro click adjustable diopter rear sight, patented ambidextrous pull bolt, and a floating Lothar Walther™ barrel. The Challenger PCP boasts a 3000 PSI reservoir for 200+ more shots per fill and good velocities. A pressure regulator aids shot-to-shot consistency. The Challenger PCP meets requirements of National Standard three-position air rifle competitions.
Young American Wins Gold Medal in Air Rifle at 2021 Olympics
William Shaner won a Gold Medal at the 2021 Tokyo Olympics. The University of Kentucky marksman, then age 20, captured Gold in the 10-meter (10m) Air Rifle, setting an Olympic record in the process. Shaner scored 251.6 points in the 10m final to set a new Olympic Record just 1.2 points shy of the world record. Will scored 10.5 or above on 13 of his 24 shots in the final. At the Tokyo Games, William was shooting a Walther air rifle.
Watch Will Shaner capture Gold with a stellar shooting performance, broadcast by NBC Sports:
William hails from Colorado Springs, Colorado. He started his shooting career at age nine in a 4H program in the appropriately named town of Rifle, Colorado.
CMP Records 500+ Entries During 2024 National Air Gun Events at Camp Perry
Air rifle shooting is a very popular activity throughout the nation. Air rifle matches can draw a huge number of competitors. Last summer, the 2024 National Air Gun events, held as part of the Civilian Marksmanship Program’s National Matches, welcomed over 500 air rifle and air pistol entries. The events were held at the Gary Anderson CMP Competition Center at Camp Perry, Ohio.
Gary Anderson CMP Competition Center at Camp Perry.
Special CMP Air Rifles from Anschutz
Back in 2009, the CMP ordered a special run of Anschutz Air rifles. These had laminated wood stocks and the CMP logos on the buttstock.
The CMP currently offers Precision Air Rifles and Sporter Air Rifles for sale via the CMP Website.
CMP Precision Air Rifles from Walther
The new Walther LG400 Bluetec was specifically designed for 3-position air rifle shooting. The barreled action and trigger are the same as the top-of-the-line LG400 models. It comes without an absorber but it can be retrofitted with one. The barreled action will fit into any of the higher end stocks if you wish to upgrade it. The accuracy is the same as the higher-priced LG400s. With a top-tier marksman, this rifle can put 10 shots through the same hole at 10 meters.
The LG400 Bluetec is sold by the CMP with the Walther Basic rear sight, Walther 22mm front sight and a 200/300 bar steel cylinder. The aluminum stock comes with an ambidextrous grip, trigger guard, and an adjustable cheekpiece and buttplate. This rifle is sold by the CMP but shipped via Walther Arms.
Video from the U.S. Army Junior Air Rifle Nat’l Championships at Fort Benning, Georgia. This invitation-only event features top 30 precision and sporter individuals, and top 30 teams in both disciplines.
Sporter Air Rifles
The largest and fastest-growing segment of junior shooting today, Three-Position Air Rifle Shooting, uses a class of target air rifles called Sporter Air Rifles. These Sporters now constitute a special class of junior shooting competition, and are used extensively in JROTC programs.
Sporter air rifles are characterized by their light weight (5-7 lbs.), low cost (from $180 to $600), basic target features (adjustable sights, adjustable length stocks, adjustable sling attachments) and good accuracy (rifles sold through this program must be capable of consistently shooting tens on the standard competition targets).
Shown above is the budget-priced Daisy Model 599 10-Meter Competition Air Rifle, a .177-caliber gun that allows competitors to shoot the entire match without having to recharge.
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.
The U.S.S. Iowa fires her massive 16″ main battery. The U.S. Navy’s Iowa-class battleships carried nine huge 16-inch Mark 7 cannons in three turrets. The big naval guns were 50 calibers long, i.e. 50 times bore diameter, making the barrels 66.7 feet long from chamber to muzzle.
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.
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.
16-inch/50-caliber gun projectile plus six propellant bags. Display mockup aboard U.S.S. Iowa (BB-61) in San Pedro, CA. Photo by James Madison per Creative Commons CC-BY-SA-4.0 license.
Here’s an inexpensive procedure that can help you load straighter ammo, with slightly better measured concentricity (i.e. less run-out) on the case necks and bullets. Simply use a Rubber O-Ring on the underside of the die locking ring. This allows the die to self-align itself (slightly) to the case that is being sized. Without the O-Ring, if the flat surface on the top of your press is not perfectly square with the thread axis, your die can end up slightly off-angle. This happens when the bottom of the locking ring butts up tight against the top of the press. The O-Ring allows the die to float slightly, and that may, in turn, reduce the amount of run-out induced during case sizing.
Top prone shooter GSArizona, who sadly passed in 2022, tried this trick and said it works: “Go to your local hardware store and get a #17 O-Ring (that’s the designation at Ace Hardware, don’t know if its universal). Slip the O-Ring on the die and re-adjust the lock ring so that the O-Ring is slightly compressed when the die is at the correct height. Size and measure a few more cases. You will probably see a slight improvement in neck concentricity as the die can now float a bit as the case enters and leaves it. This isn’t going to be a dramatic improvement, but it’s a positive one.”
We want to stress that adding O-Rings to sizing dies may help some reloaders, but we don’t offer this as a panacea. Try it — if using the O-Ring reduces measured runout that’s great. If it doesn’t, you’ve only spent a few pennies to experiment.
Lee Precision makes die lock rings with built-in O-Rings. Lee’s distinctive lock ring design allows the same kind of self-alignment, which is good. However, Lee lock rings don’t clamp in place on the die threads, so they can move when you insert or remove the dies — and that can throw off your die setting slightly. By using an O-Ring under a conventional die lock ring (that can be locked in place), you get the advantages of the Lee design, without the risk of the lock ring moving.