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November 1st, 2021

TECH TIP: Bullet Bearing Surface Length Can Affect Pressure

USAMU Bullet Ogive Comparision Safety Reloading
Photo 1: Three Near-Equal-Weight 7mm Bullets with Different Shapes

TECH TIP: Bullets of the same weight (and caliber) can generate very different pressure levels due to variances in Bearing Surface Length (BSL).

Bullet 1 (L-R), the RN/FB, has a very slight taper and only reaches its full diameter (0.284″) very near the cannelure. This taper is often seen on similar bullets — it helps reduce pressures with good accuracy. The calculated BSL of Bullet 1 was ~0.324″. The BSL of Bullet 2, in the center, was ~0.430”, and Bullet 3’s was ~ 0.463″. Obviously, bullets can be visually deceiving as to BSL!


This article from the USAMU covers an important safety issue — why you should never assume that a “book” load for a particular bullet will be safe with an equal-weight bullet of different shape/design. The shape and bearing surface of the bullet will affect the pressure generated inside the barrel. This is part of the USAMU’s Handloading Hump Day series, published on the USAMU Facebook page.

Beginning Handloading, Part 13:
Extrapolating Beyond Your Data, or … “I Don’t Know, What I Don’t Know!”

We continue our Handloading Safety theme, focusing on not inadvertently exceeding the boundaries of known, safe data. Bullet manufacturers’ loading manuals often display three, four, or more similar-weight bullets grouped together with one set of load recipes. The manufacturer has tested these bullets and developed safe data for that group. However, seeing data in this format can tempt loaders — especially new ones — to think that ALL bullets of a given weight and caliber can interchangeably use the same load data. Actually, not so much.

The researchers ensure their data is safe with the bullet yielding the highest pressure. Thus, all others in that group should produce equal or less pressure, and they are safe using this data.

However, bullet designs include many variables such as different bearing surface lengths, hardness, and even slight variations in diameter. These can occasionally range up to 0.001″ by design. Thus, choosing untested bullets of the same weight and caliber, and using them with data not developed for them can yield excess pressures.

This is only one of the countless reasons not to begin at or very near the highest pressure loads during load development. Always begin at the starting load and look for pressure signs as one increases powder charges.

Bullet bearing surface length (BSL) is often overlooked when considering maximum safe powder charges and pressures. In photo 1 (at top), note the differences in the bullets’ appearance. All three are 7mm, and their maximum weight difference is just five grains. Yet, the traditional round nose, flat base design on the left appears to have much more BSL than the sleeker match bullets. All things being equal, based on appearance, the RN/FB bullet seems likely to reach maximum pressure with significantly less powder than the other two designs.

Bearing Surface Measurement Considerations
Some might be tempted to use a bullet ogive comparator (or two) to measure bullets’ true BSL for comparison’s sake. Unfortunately, comparators don’t typically measure maximum bullet diameter and this approach can be deceiving.

Photo 2: The Perils of Measuring Bearing Surface Length with Comparators
USAMU Bullet Ogive Comparision Safety Reloading

In Photo 2, two 7mm comparators have been installed on a dial caliper in an attempt to measure BSL. Using this approach, the BSLs differed sharply from the original [measurements]. The comparator-measured Bullet 1 BSL was 0.694” vs. 0.324” (original), Bullet 2 was 0.601” (comparator) vs. 0.430” (original), and Bullet 3 (shown in Photo 2) was 0.602” (comparator) vs. 0.463” (original). [Editor’s comment — Note the very large difference for Bullet 1, masking the fact that the true full diameter on this bullet starts very far back.]

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October 10th, 2021

Smart Advice for Reducing Run-Out with Standard Seating Dies

USAMU Handloading Hump Day Seating Die Adjustment Stem TIR Concentricity Run-out

The U.S. Army Marksmanship Unit (USAMU) regularly publishes reloading “how-to” articles on the USAMU Facebook page. This USAMU article, the second in a series on improving concentricity, has many useful tips. If you use standard (non-micrometer) seating dies when loading some cartridge types, this article is worth reading. And visit the USAMU Facebook page for other tips on handloading and marksmanship.

Once again, it’s time for USAMU’s “Handloading Hump-Day!” Last week, we addressed achieving very good loaded-cartridge concentricity (AKA “TIR”, or Total Indicator Runout) using standard, “hunting grade” reloading dies.

We explained how to set up the Full-Length Size die to float slightly when correctly adjusted for desired case headspace. We also cited a study in which this method loaded ammunition straighter than a set of [higher grade] match dies from the same maker. [One of the keys to reducing TIR with both sets of dies was using a rubber O-ring below the locking ring to allow the die to float slightly. READ Full-Length Sizing Die TIP HERE.]

Now, we’ll set up a standard seating die to minimize TIR — the other half of the two-die equation. As before, we’ll use a single-stage press since most new handloaders will have one. A high-quality runout gauge is essential for obtaining consistent, accurate results.

Having sized, primed and charged our brass, the next step is bullet seating. Many approaches are possible; one that works well follows. When setting up a standard seating die, insert a sized, trimmed case into the shell-holder and fully raise the press ram. Next, back the seating stem out and screw the die down until the internal crimping shoulder touches the case mouth.

Back the die out one-quarter turn from this setting to prevent cartridge crimping. Next, lower the press ram and remove the case. Place a piece of flat steel on the shellholder and carefully raise the ram. Place tension on the die bottom with the flat steel on the shellholder. This helps center the die in the press threads. Check this by gently moving the die until it is well-centered. Keeping light tension on the die via the press ram, secure the die lock ring.

USAMU Handloading Hump Day Seating Die Adjustment Stem TIR Concentricity Run-out

If one were using a micrometer-type seating die, the next step would be simple: run a charged case with bullet on top into the die and screw the seating stem down to obtain correct cartridge OAL.

However, with standard dies, an additional step can be helpful. When the die has a loosely-threaded seating stem, set the correct seating depth but don’t tighten the stem’s lock nut. Leave a loaded cartridge fully raised into the die to center the seating stem. Then, secure the stem’s lock nut. Next, load sample cartridges and check them to verify good concentricity.

One can also experiment with variations such as letting the seating stem float slightly in the die to self-center, while keeping correct OAL. The runout gauge will show any effects of changes upon concentricity. However, the first method has produced excellent, practical results as evidenced by the experiment cited previously. These results (TIR Study 2) will reproduced below for the reader’s convenience.

TIR Study 2: Standard vs. Match Seating Dies

50 rds of .308 Match Ammo loaded using carefully-adjusted standard dies, vs. 50 using expensive “Match” dies from the same maker.

Standard dies, TIR:
0.000” — 0.001” = 52%;
0.001”– 0.002” = 40%;
0.002”– 0.003” = 8%. None greater than 0.003”.

“Match” dies, TIR:
0.000”– 0.001” = 46%;
0.001” — 0.002” = 30%;
0.002” — 0.003” = 20%;
0.003” — 0.004” = 4%.

AccurateShooter Comment: This shows that, with careful adjustment, the cheaper, standard dies achieved results that were as good (or better) than the more expensive “Match” Dies.

These tips are intended to help shooters obtain the best results from inexpensive, standard loading dies. Especially when using cases previously fired in a concentric chamber, as was done above, top-quality match dies and brass can easily yield ammo with virtually *no* runout, given careful handloading.

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September 9th, 2021

Top Shooters Teach Marksmanship at Camp Perry Nat’l Matches

CMP National Matches Camp Perry Brandon Green USAMU marksmanship training
The 2021 Rifle Small Arms Firing School helped train over 250 individuals on the range.

This article recognizes the efforts of military men and women who teach others shooting skills and preserve the proud traditions of American marksmanship.

The National Matches at Camp Perry, a staple in the marksmanship world for over 100 years, include many excellent training clinics taught by military teams as well as CMP instructors. The CMP offers an entire lineup of educational courses for those new to the sport and those eager to develop their skills. The types of rifle and pistol courses span from junior to adult, competitive to maintenance and everything in between. Along with classes taught by CMP staffers, other courses are taught by military personnel, including many past and current National Champions and record-holders.

Small Arms Firing School Led by 3-Time Nat’l HP Champion SSG Brandon Green
This year, the Small Arms Firing School was directed by many top-flight marksmen from a number of military teams. The rifle classroom portion was led by the USAMU’s SFC Brandon Green (shown below), a 3-Time National High Power Champion who holds multiple national records including a perfect score in the President’s Rifle event.

CMP National Matches Camp Perry Brandon Green USAMU marksmanship training

Out on the line, world-class shooters such as SSG Amanda Elsenboss and MAJ Samuel Freeman, the 2021 winner of the President’s Rifle Match, brought their knowledge and experience into one-on-one training with participants. Elsenboss is one of America’s greatest shooters. She recently won the 2021 National High Power Championship at Camp Atterbury, after winning the National Long-Range Championship in 2019.

“Having those world-class shooters serve as instructors is an honor and one the students should remember always”, Cooper added.

U.S. Marine Corps Junior Clinic
The Marine Corps junior clinic, guided by MAJ Martinez (USMC Shooting Team Officer), is always a big hit with up-and-coming young rifle shooters. CMP Training Manager Steve Cooper noted: “It was great to see so many enthusiastic young people, who revere the Marine Corps Shooting Team, come out and take advantage of the instruction at this year’s clinic.”

The 3-day clinic includes more advanced training beyond fundamentals, including weather conditions, how to read wind, equipment use, shooting positions, and rulebook standards. Juniors in the clinic spend one day in the classroom, followed by two days of live-fire on the range at 200, 300, and 600 yards.

Marine corps junior clinic CMP National Matches Camp Perry Brandon Green USAMU marksmanship training

“We talk to them and try to understand them, what they struggle with as individuals and their process,” Cooper said of the USMC’s training technique. “We try to give them tiny, little fixes to what they already have going on.”

GySgt Daniel Rhodes, the staff non-commissioned officer in charge of the Marine Corps Rifle Team, helped lead instruction on the firing line in 2021. Rhodes was pleased with the turnout of around 80 juniors. Rhodes explained that around 25 percent of the juniors in the clinic were first-timers.

Team CMP Advanced High Power Clinic:
Led by members of Team CMP (the organization’s own competitive High Power squad) the Advanced High Power Clinic offers more complex instruction in service rifle competition techniques using classroom and range discussion. Though the class traditionally only utilizes dry-fire training on the range, in 2021, a 600-yard live-fire portion was added.

CMP National Matches Camp Perry Brandon Green USAMU marksmanship training
The Advanced High Power Clinic, led by Team CMP members including Bob Gil (above), provides advanced training on wind reading, mental management and more.

With 65 individuals signed up, the course was broken into groups headed by Sara Rozanski, James Fox, Nick Till, Danny Arnold, Robert Taylor and Bob Gil — all experienced and award-winning marksmen. Each focused on a specific area, such as wind reading, mental management and positioning.

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August 30th, 2021

SSG Amanda Elsenboss Wins National High Power Championship

Amanda Elsenboss 2021 High Power Champion championship Camp atterbury service rifle National Guard USAMU

Hail the new Champion — SSG Amanda Elsenboss is the 2021 NRA High Power Rifle National Champion. Amanda secured the High Power title with a Grand Aggregate score of 2386-133X. This is a major achievement for Amanda. In winning the coveted High Power title, Amanda is now just the third female to earn this honor, along with Nancy Tompkins and Nancy’s daughter Sherri Gallagher. And we believe this is the first time a woman won the High Power title shooting a Service Rifle in all matches.

Amanda Elsenboss 2021 High Power Champion championship Camp atterbury service rifle National Guard USAMU

Elsenboss, formerly with the U.S. Army Marksmanship Unit, now competes with the Pennsylvania Army National Guard Team. She is classified as a High Master in NRA High Power. Finishing second overall was SSG John Coggshall of the Army National Guard with a score of 2380-125X. Coggshall, like Amanda, shot a Service Rifle. Kenneth Lankford, shooting a Match Rifle, finished third with 2379-104X.


CLICK HERE for Full High Power Championships Results »

The match was held August 22–28 at Camp Atterbury, Indiana. On her Facebook Page, Amanda posted:

“Today was a great day. After four long, hot days on the range I won the 2021 NRA [High Power] Rifle Championships. Thank you to everyone for the support and encouragement along the way. Congratulations to John Coggshall for coming in second overall and second Service Rifle, and to Kirk Freeman for being third Service Rifle. It was some great shooting by the Guard… and everyone really making the last day count.”

Amanda Elsenboss 2021 High Power Champion championship Camp atterbury service rifle National Guard USAMU

Amanda added: “I have to thank my biggest supporter — Perry Sabertooth X Mayfly” (shown above in Amanda’s shooting cart at Camp Atterbury).

Before Her High Power Victory, Amanda Took 2nd in Long Range

Amanda Elsenboss 2021 High Power Champion championship Camp atterbury service rifle National Guard USAMU
Before winning the 2021 High Power National Championship, Amanda took second in the 2021 NRA Long Range National Championship, also held at Camp Atterbury.

This has been a great summer for Amanda at Camp Atterbury. She finished second overall at the 2021 NRA Long-Range Nationals, behind Oliver Milanovic, and she also won the Canadian Cup at Atterbury. Prior to that, competing at Camp Perry with the National Guard All Guard Marksmanship Team, Amanda shot perfect individual scores in both the National Trophy and Hearst Doubles team events. Her 500-34X in the National Trophy Team (NTT) event set a National Record.

Amanda, then shooting with the USAMU team, previously won the NRA Long Range National Championship in 2019. Now that she has won BOTH High Power and Long Range National Championships, Amanda can truly be ranked among the most notable shooters in U.S. history.

Amanda Elsenboss — America’s New Leading Lady of Shooting

SSG Amanda Elsenboss 2021 NRA High Power Championship

Before his retirement from the U.S. Army, Emil Praslick III coached Amanda as a shooter with the U.S. Army Markmanship (USAMU) team. Emil, considered one of the greatest shooting coaches in the nation, was impressed with Amanda’s skill and dedication. Emil posted: “[Amanda is] by far the easiest shooter to coach I’ve ever worked with. A machine.”

SSG Amanda Elsenboss high power championship NRA Camp Atterbury

Video Interview with SSG Amanda Elsenboss
This video, featuring SSG Amanda Elsenboss, was created by the USAMU to mark Women’s History Month. Amanda talks about her career in the military, and her love of competitive shooting. This is a great video, well worth watching. There are images from many shooting ranges around the nation.

SSG Amanda Elsenboss. CLICK Speaker Icon to Hear Sound!

When serving with the USAMU, Amanda shot the sling division at the Berger SW Nationals:
SSG Amanda Elsenboss

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July 18th, 2021

Precision Reloading for Handguns — Smart Tips from the USAMU

USAMU Service Pistol Handgun Tip Advice Reloading
SSG Greg Markowski of the USAMU at Camp Perry, Ohio.

Today is the final day of pistol competition for the National Matches at Camp Perry. Many of the best pistol shooters in the country will be on the firing line, including members of the U.S. Army Marksmanship Unit Service Pistol team. Today, July 18th, the handgun phase of the CMP National Matches concludes with the Oliver Hazard Perry Pop-Up Pistol Match, Military & Police Pistol Match, 1911 As-Issued Pistol Match, and Glock Match. After the last match, trophies and awards will be presented to the top shooters.

If you want to compete in top competitions like this, you’ll need good ammo. The following USAMU article provides rock-solid reloading advice, explaining how to load accurate, reliable handgun ammo.

Camp Perry Pistol competition 2014
Camp Perry NM pistol firing line from CMP Photo Archives.

USAMU Service Pistol Handgun Tip Advice Reloading

The U.S. Army Marksmanship Unit (USAMU) fields pistol teams as well as rifle and shotgun competition squads. Consequently the USAMU’s Reloading Shop loads tens of thousands of pistol rounds every year. In this article, the USAMU’s handgun experts talk about reloading for handguns — with smart tips on how to achieve superior accuracy with 100% reliability. This article, which offers important insights on COAL, primers, crimps and more.

USAMU Service Pistol Handgun Tip Advice Reloading

Precision Pistol Reloading — Recommended Methods

Optimize the Taper Crimp
One often-overlooked aspect of handloading highly-accurate pistol ammunition is the amount of crimp and its effect on accuracy. Different amounts of taper crimp are used with various handloads to obtain best accuracy. The amount is based on bullet weight, powder burn rate and charge, plus other factors. It is not unusual for our Shop to vary a load’s crimp in degrees of 0.001″ and re-test for finest accuracy.

USAMU Service Pistol Handgun Tip Advice ReloadingUse Consistent Brass
Brass is also important to pistol accuracy. While accurate ammunition can be loaded using brass of mixed parentage, that is not conducive to finest results, particularly at 50 yards. It is important for the serious competitor/handloader to use brass of the same headstamp and ideally one lot number, to maximize uniformity. Given the volumes of ammunition consumed by active pistol competitors, using inexpensive, mixed surplus brass for practice, particularly at the “short line” (25 yards), is understandable. However, for the “long line” (50 yards), purchasing and segregating a lot of high-quality brass to be used strictly for slow-fire is a wise idea.

Importance of Uniform COAL
Uniformity of the Case Overall Length (COAL) as it comes from the factory is also important to achieving utmost accuracy. More uniform case lengths (best measured after sizing) contribute to greater consistency of crimp, neck tension, ignition/burn of powder charge, and so on. Cartridge case-length consistency varies from lot to lot, as well as by maker. Some manufacturers are more consistent in this dimension than others. [Editor’s note: It is easy to trim pistol brass to uniform length. Doing this will make your taper crimps much more consistent.]

Primers and Powders — Comparison Test for Accuracy
Pay attention to primer brands, powder types and charges. Evaluating accuracy with a Ransom or other machine rest at 50 yards can quickly reveal the effect of changes made to handload recipes.

Bullet Selection — FMJ vs. JHP
Bullets are another vital issue. First, there is the question of FMJ vs. JHP. A friend of this writer spent decades making and accuracy-testing rifle and pistol bullets during QC for a major bullet manufacturer. In his experience, making highly-accurate FMJ bullets is much more difficult than making highly-accurate JHPs, in large part due to the way the jackets are formed. Small die changes could affect accuracy of FMJ lots dramatically.

The CMP now allows “safe, jacketed ammunition” in Excellence-in-Competition (EIC) Service Pistol matches, although wadcutter ammunition is prohibited. Thus, the option to use very accurate JHP designs simplifies the life of CMP Service Pistol shooters in pursuit of the prestigious Distinguished Pistol Shot badge.

Hopefully, these tips will be helpful to any pistol shooters interested in accurate handloads, not just “Bullseye” shooters. Small tweaks to one’s normal routine can pay big dividends in improved accuracy and make practice and competition more rewarding.

Stay safe, and good shooting!

TOP IMAGE: SSG Greg Markowski, a shooter/instructor with the U.S. Army Marksmanship Unit and native of Poland, fires his pistol during the 2018 Civilian Marksmanship Program’s National Pistol Matches at Camp Perry, Ohio July 13, 2018. At that event, Markowski claimed the General Mellon Trophy, General Patton Trophy and the General Custer Trophy. U.S. Army photo by Maj. Michelle Lunato/released by Defense Visual Information Distribution Service.

Permalink Bullets, Brass, Ammo, Handguns, Reloading 2 Comments »
June 28th, 2021

USAMU Wins Interservice Team Match at Quantico

2021 Interservice Rifle Team Championship Match USAMU Quantico Virginia

This past weekend, the U.S. Army Marksmanship Unit (USAMU) Service Rifle Team won the 2021 Interservice Rifle Team Championship Match held in Quantico, Virginia. The USAMU squad finished with an impressive score of 4918-185X! This competition features 10-person teams. All the shooters have to perform well to secure the team victory.

2021 Interservice Rifle Team Championship Match USAMU Quantico Virginia

This is a tough match, shot with multiple positions at 200, 300, and 600 yards. In this course of fire, all members of a 10-person team complete the following stages:

Stage 1 at 200 yards — 10 standing, slow fire shots with a total time of 66 minutes.
Stage 2 at 200 yards — 10 sitting from standing, rapid fire shots within 60 seconds per shooter.
Stage 3 at 300 yards — 10 prone from standing, rapid fire shots within 70 seconds per shooter.
Stage 4 at 600 yards — 20 prone, slow fire shots with a total time of 126 minutes.

2021 Interservice Rifle Team Championship Match USAMU Quantico Virginia
2021 Interservice Rifle Team Championship Match USAMU Quantico Virginia

Team members were: Sgt. 1st Class Walter Craig (coach), Lt. Col. Erik Andreasen (captain), Staff Sgt. Erin McNeil (497-21X), Sgt. Brandon Muske (495-22X), Sgt. Jarrod McGaffic (495-18X), Sgt. 1st Class Brandon Green (494-20X), Sgt. Jared Desrosiers (494-15x), Staff Sgt. David Bahten (492-19X), Spc. Kade Jackovich (492-17X), Spc. Luke Rettmer (489-16X) Staff Sgt. Verne Conant (487-13X) and Sgt. Lane Ichord (483-24x).

2021 Interservice Rifle Team Championship Match USAMU Quantico Virginia SSG Erin McNeil

By earning the top score in this match, SSG Erin McNeil (shown above) also earned the Lt. Col. Reynolds Trophy. SGT Muske placed second in this category. The 2021 Interservice Match at Quantico concludes today with the well-known Infantry Trophy Team Match. See more Interservice match photos at: USAMU Flickr Archive (742 images).

2021 Interservice Rifle Team Championship Match USAMU Quantico Virginia
2021 Interservice Rifle Team Championship Match USAMU Quantico Virginia

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June 27th, 2021

SSG Erin McNeil Wins 2021 Interservice Rifle Championship

USAMU SSG sergeant Erin McNeil wins 2021 Interservice Rifle Championship smallbore high power

The U.S. Armed Services’ new champion is a young lady. U.S. Army Staff Sergeant (SSG) Erin McNeil claimed the 2021 Interservice Individual Rifle Champion title with an impressive score of 996-52X, beating out 86 other service members. That score also earned Erin the title of High Woman. The 2021 Interservice Rifle Championships (IRC) continued with other events, including the 1000-yard match. Shown below is SSG McNeil competing in the IRC 1K Match.

USAMU SSG sergeant Erin McNeil wins 2021 Interservice Rifle Championship smallbore high power

Staff Sgt. Erin McNeil hails from Fort Wayne, Indiana. She has a B.S. in Mathematics from Texas Christian University (TCU), and holds the military occupational specialty of battle management system operator. With the USAMU, SSG McNeil has served on the International Shooting Team and the Service Rifle Team. As a USAMU team member, SSG McNeil has earned the President’s 100 Tab, Rifleman’s EIC Badge, and Bronze Medal at the 2014 World Championship in 3-Position/50m Smallbore Rifle.

McNeil started shooting through a 4-H program while in the 8th grade and then shot in college with the TCU Rifle Team. Now, she serves as a shooter/instructor on the USAMU International Rifle Team. In the video below, SSG McNeil talks about her career in competitive shooting, and what she enjoys most about rifle competition — both smallbore and High Power. She notes she gets enjoys instructing young high school and collegiate shooters.

USAMU SSG sergeant Erin McNeil wins 2021 Interservice Rifle Championship smallbore high power

Erin enjoys shooting competition because “It’s really between you and the gun. It’s a very mental game. I think shooting is a great sport… as long as you are able to compete within yourself.”

USAMU SSG sergeant Erin McNeil wins 2021 Interservice Rifle Championship smallbore high power

Like Father, Like Daughter — Both Great Shooters
Erin noted: “My father was very influential in my shooting career. As a child, I looked up to him. I knew that he had been a world-class shooter in his youth. He asked me a few times if I would be interested in starting the 4H Rifle program He was excited when I started showing interest in the program. Although he never coached me for fear of crossing the father/daughter relationship with the athlete/coach relationship, but he was always my biggest supporter and even gave assistance when I asked for it. I had a natural talent for shooting and ended up joining my high school’s Army JROTC. I was given a NCAA scholarship; to TCU during my senior year. After completing college, I was accepted into the USAMU. My dad [was] the quiet, proud encourager of my shooting career[.]”

Words of Praise for SSG Erin McNeil from Facebook

“The nice thing about shooting sports is men and women can compete against each other and be on equal footing. Congratulations on the win!” — Doug Fraser

“Congrats Sergeant McNeil from an old shooter from the 1964 ARADCOM Interservice Rattle Battle matches at Fort Carson Colorado, Ft. Campbell, Ft Sheridan, et cetera. You make me proud of all you folks who carry on the tradition.” — Walter Colbert

“I’ve watched Erin shoot while I was calling the matches from the Tower at the Camp Perry smallbore championships. [She was] never bothered and never ruffled. Just keeps shooting those Xs.” — Ken Kelley

USAMU SSG sergeant Erin McNeil wins 2021 Interservice Rifle Championship smallbore high power
USAMU SSG sergeant Erin McNeil wins 2021 Interservice Rifle Championship smallbore high power

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June 12th, 2021

How to Prep Mil-Surp 5.56 Lake City Brass — Save Money

The U.S. Army Marksmanship Unit regularly publishes a reloading “how-to” article on the USAMU Facebook page. One excellent “Handloading Hump Day” post covered preparation of once-fired 5.56x45mm brass. This article, the first in a 3-part series, has many useful tips. If you shoot a rifle chambered in .223 Rem or 5.56x45mm, this article is worth reading.

This week, Handloading Hump-Day will answer a special request from several competitive shooters who asked about procedures for morphing once-fired GI 5.56mm brass into accurate match brass for NRA High Power Rifle use. The USAMU has used virgin Lake City (LC) 5.56 brass to win National Championships and set National Records for many years. In this 3-part series, we’ll share techniques proven to wring match-winning accuracy from combat-grade brass.

GI brass has an excellent attribute, worth noting — it is virtually indestructible. Due to its NATO-spec hardness, the primer pockets last much longer than most commercial brass when using loads at appropriate pressures.

Preparing Once-Fired GI 5.56 Brass for Reloading (Part 1 of 3)

Assuming our readers will be getting brass once-fired as received from surplus dealers, the following steps can help process the low-cost raw material into reliably accurate components.

1. Clean the Brass
First, clean the brass of any dirt/mud/debris, if applicable. Depending on the brass’s condition, washing it in a soap solution followed by a thorough rinsing may help. [This step also extends the life of the tumbling media.] Approaches range from low-tech, using gallon jugs 1/2 full of water/dish soap plus brass and shaking vigorously, to more high-tech, expensive and time-consuming methods.

cleaning Lake City 5.56 brass

2. Wet-Tumbling Options (Be Sure to Dry the Brass)
When applying the final cleaning/polish, some use tumblers with liquid cleaning media and stainless steel pins for a brilliant shine inside and out, while others take the traditional vibratory tumbler/ground media approach. Degree of case shine is purely personal preference, but the key issue is simple cleanliness to avoid scratching ones’ dies.

If a liquid cleaner is used, be SURE to dry the cases thoroughly to preclude corrosion inside. One method is to dump the wet brass into an old pillow case, then tilt it left/right so the cases re-orient themselves while shifting from corner to corner. Several repetitions, pausing at each corner until water stops draining, will remove most water. They can then be left to air-dry on a towel, or can be dried in a warm (150° F-200° F max) oven for a few minutes to speed evaporation.

Shown below are Lake City cases after cleaning with Stainless Media (STM). Note: STM Case cleaning was done by a third party, not the USAMU, which does not endorse any particular cleaning method.

3. Inspect Every Case
Once dry, inspect each case for significant deformation (i.e., someone stepped on it), damaged mouths/necks and case head/rim damage. Some rifles’ ejectors actually dig small chunks of brass out of the case head — obviously, not ideal for precision shooting. Similarly, some extractors can bend the case rims so badly that distortion is visible when spinning them in one’s fingers. These can be used for plinking, but our match brass should have straight, undamaged rims.

Dented case mouths are common, and these can easily be rounded using a conical, tapered tool, [such as a .223 expander mandrel. A dummy 7.62 or .30-06 cartridge with a FMJ spitzer can also work.] If most of your brass is of one headstamp, this is a good time to cull out any odd cases.

4. Check the Primers Before Decapping
Your clean, dry and inspected brass is now ready for full-length sizing, decapping and re-priming. Historically, primer crimps on GI brass have caused some head-scratching (and vile language) among handloaders. Our next installment will detail efficient, easy and practical methods to remove primer crimp, plus other useful handloading tips. Until next week, Good Shooting!

NOTE: The USAMU Handloading (HL) Shop does not RE-load fired 5.56 brass. We use virgin LC brass with our chosen primer already staked in place. However, our staff has extensive personal experience reloading GI brass for competition, which will supplement the Shop’s customary steps. In handloading, as in life, there are many ways to accomplish any given task. Our suggestions are note presented as the “only way,” by any means. Time for loading/practicing is always at a premium. Readers who have more efficient, alternative methods that maintain top accuracy are invited to share them here.

Accuracy Potential of Mil-Surp 5.56×45 Brass

So, how accurate can previously-fired GI surplus brass be in a good National Match AR-15? Well, here’s a data point from many years ago that might be of interest. A High Power shooter who wrote for the late Precision Shooting magazine took a Bill Wylde-built AR match rifle to a registered Benchrest match. His first 5-round group ever fired in a BR match was officially measured at 0.231″ at 200 hundred yards. This was fired in front of witnesses, while using a moving target backer that confirmed all five rounds were fired.

He recounted that his ammo was loaded progressively with factory 52gr match bullets and a spherical powder using mixed years of LC brass with no special preparation whatsoever. Obviously, this was “exceptional”. However, he had no difficulty obtaining consistent 0.5-0.6 MOA accuracy at 200 yards using LC brass and a generic “practice” load that was not tuned to his rifle.

Saving Money by Using GI Brass

So, with good commercial brass readily available, why would one go to all the extra steps necessary to process fired GI brass? [Editor: It’s about saving money.]

Economically, it makes great sense. When the author was actively practicing and competing with the service rifle, he had ~3,000 rounds of 5.56mm brass, which allowed him to load during winter and spend most time in the summer practicing. If one were wealthy and wanted to shoot nothing but the finest imported brass, the current cost of 3,000 is ~$1920 (plus shipping.)

Dropping down to good, but less-expensive new, U.S. commercial brass brings the price to a much more realistic ~$720. However, at current rates, the same amount of surplus GI once-fired brass costs between $120 — $150, leaving lots of room in the budget for other expenses. [Editor: that’s less than 10% of the cost of the best imported brass.]

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June 3rd, 2021

Match Etiquette: Be Prepared, Know the Rules and Course of Fire

Match Etiquette USAMU Course of Fire Rules SFC Norman Anderson CMP Rulebook NRA

Match Etiquette USAMU Course of Fire Rules SFC Norman Anderson CMP Rulebook NRA

Don’t Be “That Guy” (The Bad Apple on the Firing Line)

By SFC Norman Anderson, USAMU Service Rifle Team Member
You know the guy, he’s still talking at the coffee jug when his preparation period begins, then his magazines aren’t loaded when the command “STAND” is given, and finally, he doesn’t know the rules when he argues with the block officer as his target comes up marked “9 and No”. Although this guy might be the highlight of the “after match” activities, he is the proverbial bad apple on the firing line. With this example fresh in your mind, let’s go over how not to be “that guy”.

While the sport of High Power shooting is a hobby for most, all are passionate about performance throughout the day. In order to achieve your maximum performance each and every day, it is essential that you conduct yourself as a professional competitor. As a competitor, you have a personal responsibility to know the course of fire as well as the rules and procedures that apply to it and to be prepared to follow them. Knowing this will not only make you a better competitor, but it will enable you to resolve situations with other targets besides your own. So what does all this mean? I’ll explain…

Know the Course of Fire
Know the course of fire. It sounds easy enough, as we all shoot plenty of matches, but it’s more than that. If you think about it, how many people in the pits, for example, do not really know what is happening on the firing line? This leads to targets being pulled early during a rapid fire string or missing a shot during a slow fire string. In cases like this, the result is the same, delays in the match and upset competitors. To avoid being “that guy,” it is imperative that you stay tuned to the events as the day progresses. When you are at the range shooting a match, be at the range shooting the match.

At any firearms competition — be sure you know (and understand) the course of fire.
CMP Match Etiquette

Match Etiquette USAMU Course of Fire Rules SFC Norman Anderson CMP Rulebook NRAKnow the Rules
Now, let’s discuss rules. As you have probably heard more than once, the rulebook is your best friend. Here is why. I can virtually guarantee that most competitors know some of the rules based only on the old “this is how we do it at home” adage. The funny part of that is, the same green NRA rulebook and orange CMP rulebooks are used to govern High Power matches all over the country.*

It is vital that all shooters be familiar with the rules as they are written, not with “how they are applied at home”. This creates consistency and continuity in how matches are conducted, from local club matches to state tournaments to National Championships. Knowledge is power when it comes to scoring targets under contention, what to do in the case of a malfunction, or even how to file a protest correctly. These rules are in place for a reason and it benefits everyone to both know and operate by these rules.

Maintain Composure and Humility — Exhibit Good Sportsmanship
One aspect of competing that cannot be forgotten is bearing. As I mentioned earlier, you must be prepared for both good and bad to happen. All too often we all see “that guy” (or that “that guy’s” gear) flying off of the firing line in disgust. Remember that we all must maintain our composure and humility in all conditions, not matter what happens. After all, it’s just a game. To put it into perspective, if it were easy, attendance would be a lot higher. Sportsmanship must be displayed in an effort to keep from ruining the day for all those around you. It doesn’t cost anything to smile, and smiling never killed anyone. So turn that frown upside down and keep on marching, better days will come.

Like a Boy Scout — Always Be Prepared
Lastly, I would like to cover preparedness. Being prepared goes beyond simply having your magazines loaded and a zero on your rifle. It means approaching the firing line, knowing what you are about to do, being ready for what is going to happen (good or bad), and being ready for the results. If you approach the firing line to merely shoot 10 shots standing in your next LEG match, you are not going to be pleased with the result. You must be prepared mentally and physically, not only for the next stage, but also the next shot. By being prepared physically (equipment ready), you give yourself peace of mind which is an essential part of being prepared mentally, and by being prepared mentally, you are less likely to become distracted and are more likely to maintain focus for each and every shot.

Conclusion — Informed Competitors Make for Better Matches
The culmination of these efforts results in a shooter that knows how to be ready for success on the range, but also and perhaps more importantly, a shooter who knows what it means to be a competitor. When you have a range full of competitors who know and follow the rules and proper match procedures, the match runs smoothly, everyone shoots well, and a good time is had by all. In the end, isn’t that what it’s all about?


* After this article was originally written, the CMP separated its rules into multiple Rulebooks:

The 2020-21 8th Edition of the CMP Games Rifle and Pistol Competition Rules for CMP-sanctioned matches for As-Issued Military Rifle and Pistol events including Special M9 and M16 EIC Matches, and Service Pistol, and Rimfire Sporter.

The 2020-21 24th Edition CMP Highpower Competition Rules for CMP-sponsored and sanctioned matches for Highpower Rifle events in National Trophy Matches, Excellence-In-Competition (EIC) Matches, CMP Cup Matches and other CMP-sanctioned competitions.

The 2020-21 24th Edition CMP Pistol Competition Rules for CMP-sponsored and sanctioned Pistol Matches in the National Matches, National Trophy Matches, Excellence-In-Competition (EIC) Matches, and other CMP-sanctioned competitions.

This article by SFC Norman Anderson originally appeared in the CMP First Shot Online Magazine.

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May 20th, 2021

Removing Primer Crimps from Military Brass — Tools & Methods

Marksmanship Unit USAMU Army reloading primer pocket crimp milsurp brass reloading tip swage crimps

The U.S. Army Marksmanship Unit (USAMU) regularly releases a reloading “how-to” article on the USAMU Facebook page. Here’s a helpful USAMU guide on removing military primer pocket crimps. If you ever use surplus military brass, you really should this article. It contains vital information “learned the hard way”. The writer has tried many different options for removing/swaging out crimps. He weighs the pros and cons of various methods and provides some advice that will save you time and headaches. This article was the second in a 3-part series. Visit the USAMU Facebook page regularly for other informative articles on reloading methods.

A common question, and important issue with US GI surplus 5.56 brass is “what to do with the primer crimp?” Our Handloading Shop does not prime/re-prime GI 5.56 brass, as we receive it in virgin state (primed) and don’t reload it. However, our staff has extensive private experience handloading GI brass in our own competitive shooting careers, and have several tips to offer.

Once the brass is full-length sized and decapped, the staked-in ring of displaced metal from the primer crimp remains, and hinders re-priming. Some swaging tools exist to swage out this ring, allowing free access to the primer pocket. Some are stand-alone products, and some are reloading-press mounted. Early in this writer’s High Power career, he used the common press-mounted kit several times, with less than stellar results.

Setting Up Swaging Tools
Surplus brass tends to come from mixed lots, and primer crimp varies from very mild to strong. Also, primer pocket dimensions vary. So, setting up this “one size fits most” tool involves trying to find a happy medium for a selection of different types of brass in your particular lot. Some are over-swaged, some under-swaged, and some are “Just Right.” Overall, it was a time-consuming and sub-optimal process, in this writer’s experience.

Cutting Out the Crimp Ring with a Chamfer Tool
[After trying swaging tools] this writer evolved to using the ubiquitous Wilson/RCBS/Other brands chamfer and deburring tool to cut out only the displaced crimp ring at the top of the primer pocket. One caution: DON’T OVER-DO IT! Just a little practice will let the handloader develop a “feel” for the right degree of chamfer that permits easy re-priming without removing so much metal that primer edges start to flow under pressure. For this writer, it was three half-turns of the tool in the primer pocket, with medium pressure.

Here, as with all bulk reloading operations, mechanization is our friend. A popular reloading supply house has developed an inexpensive adaptor that houses the chamfer/deburr tool (retained by an allen screw) and allows mounting in a hand drill or drill press. This speeds the operation significantly, as does use of one of the popular Case Preparation Stations that feature multiple powered operations. (Say good-bye to carpal tunnel syndrome and arthritis!)

military crimp removal USAMU

One advantage of chamfering the primer pockets lightly to remove remnants of primer crimp, vs. swaging, is that primer pockets are not loosened in this process. US GI (usually LC) NATO 5.56 brass has a great reputation for longevity due to the superior hardness of the case head vs. some softer brands of commercial brass. This means the brass will stand up well to multiple full-pressure loads without loosening primer pockets, and the chamfering method helps support this benefit.

Powered Case Prep Centers — What to Look For
A word of advice (often learned the hard way) — think carefully before jumping on the “latest/greatest” case prep center. One with a proven, long-time track record of durability and excellent customer support has a lot going for it, vs. the flashy “new kid on the block.” Analyze the functions each case prep center can support simultaneously — i.e., can it chamfer, deburr and clean primer pockets all at the same time, without having to re-configure?

Do the tool-heads that come with it look truly functional and durable? If not, can they be easily replaced with proven or more-needed versions, such as a VLD chamfer tool, or a solid/textured primer pocket cleaner rather than a less-durable wire-brush type?

military crimp removal USAMUTips for Priming with Progressive Presses
When re-priming, a couple of factors are worth noting. When re-priming using either single-stage presses, hand tools, or bench-mounted tools (such as the RCBS bench-mounted priming tool), precise alignment of the primer pocket entrance with the primer is easily achieved, and priming goes very smoothly. When using certain progressive presses, due to the tolerances involved in shell-heads, etc., one may occasionally encounter a primer that isn’t quite perfectly aligned with the primer pocket.

If resistance is felt when attempting to re-prime, DO NOT attempt to force the primer in — doing so can be dangerous! Rather, just exert SLIGHT upward pressure to keep the primer in contact with the case-head, and with the support hand, move the case back/forth a trifle. The primer will drop into alignment with the primer pocket, and then prime as usual. After priming, check each seated primer by feel. Ensure it is below flush with the case head (cleaning primer pockets helps here), and that there are no snags, burrs or deformed primers.


More Info on Primer Pocket Swaging
For more information about removing military crimps in primer pockets, we recommend you read Get the Crimp Out on the Squibloads Gun Thoughts Blog. This is a detailed, well-illustrated article that shows how to use various primer pocket reamers/cutters. It also has a very extensive discussion of swaging using CH4D, RCBS, and Dillon tools. The Squibloads author had much better luck with swaging tools than did the USAMU’s writer — so if you are considering swaging, definitely read the Squibloads article.

The illustration of primer pocket types is from the Squibloads Blog Article, Get the Crimp Out.

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