The Weapons System Technology Analysis Center (WSTIAC), part of the U.S. Department of Defense (DoD), recently conducted a comparison test between standard primers and lead-free primers. The test procedure, along with the surprising test results, are discussed in the WSTIAC Journal (Vol. 11, No. 2).
Key Findings of the WSTIAC Primer Study Were:
1. Lead-Free primers suffered from significant delays in ignition.
2. Lead-Free large rifle primers had a “a much larger variation in peak blast pressure” than did lead-based large rifle primers.
3. Field tests showed 7.62×51 rounds loaded with lead-free primers to be less accurate than rounds loaded with lead-based primers.
4. So-called “match-grade” primers were NOT always more consistent in pressure than standard primers.
Russian Lead-Free Primers Tested
WSTIAC scientists did some pretty sophisticated testing, measuring the blast waves of lead free primers vs. standard primers. The lead-free primers, denoted as DDNP for their “Diazodinitrophenol” active ingredients, were matched up against commercially-available primers containing lead. Eight models of widely-used, lead-based primers were tested along with two DDNP-based Russian-made primers, a large rifle primer (model KVB-7E) and a small pistol primer (model KVB-9E). Brief field tests were also conducted with large rifle primers in loaded ammunition. Testers measured primer ignition times, bullet muzzle velocities, and accuracy on 200m targets.
Lead-Free Primers Were Less Reliable, with Less Uniform Pressure
While you’ll need to read the study to understand the full results, in a nutshell, the DDNP (lead-free) primers proved somewhat less reliable than standard primers. The study observed: “The most obvious difference between the lead-based and DDNP-based primers was a perceptible delay between firing pin strike and ignition in 15 of 19 shots with the DDNP-based primers (and one misfire); in contrast, there were no misfires or perceptible delays in ignition with the lead-based primer.” The scientists theorized that: “The delay in ignition in 6 of the 10 shots with the DDNP-based primer suggests that this primer is at the low end of strength needed to reliably ignite 46 grains of an extruded powder.” The study also noted that: “DDNP-based KVB-7E has a much larger variation in peak blast pressure than other primers.”
Lead-Free Primers Were Less Accurate in 7.62×51 Ammo
One very interesting finding related to accuracy. In field tests, 7.62×51 ammo loaded with lead-free primers was tested against ammo with lead-based primers (other components were identical). At 200m, the average 10-shot group size of 7.62×51 ammo with lead-free primers was 2.5 MOA vs. 1.8 MOA for ammo with lead-based primers. That 0.7 MOA difference may well be meaningful (though we’d like to see the test repeated with multiple 10-shot groups, fired from a more accurate rifle). For precision shooters, this is a provocative finding because it suggests that a change in primer type, by itself, may have a dramatic impact on accuracy. The scientists surmised that: “ignition delay is the most likely cause of the larger average group size.”
“Match” Primers Are NOT Always More Consistent
One surprising collateral finding in the study challenges the widely-held notion that “Match Primers” are better, at least when judged by pressure uniformity. “Table 1 shows average peak pressures along with standard deviations from the mean for the primers in this study…. There are significant differences in the standard deviations observed for different primer types, and it is notable that so-called ‘Match’ primers are not always more consistent than non-match primers.” Readers should look at the bottom right of Table 1 below. Note that, as a percentage (%) of total pressure, the non-match CCI 450s have a significantly lower SD than the “Match” Fed 205m primers. On the other hand, the Federal 210M and 215M “Match” primers ARE more uniform in pressure than the non-match CCI Large Rifle primers.
ABSTRACT: Comparing Blast Pressure Variations of Lead-Based and DDNP (Lead-Free) Primers
This article describes the blast pressure waves produced by detonation of both lead styphnate and diazodinitrophenol (DDNP) based firearms primers measured with a high-speed pressure transducer located at the muzzle of a rifle (without powder or bullet). These primer blast waves emerging from the muzzle have a pressure-time profile resembling free-field blast pressure waves. The lead-based primers in this study had peak blast pressure variations (standard deviations from the mean) of 5.0-11.3%.
In contrast, lead-free DDNP-based primers had standard deviations of the peak blast pressure of 8.2-25.0%. Combined with smaller blast waves, these large variations in peak blast pressure led to delayed ignition and failure to fire in brief field tests.
The Western CMP Games/ Creedmoor Cup start very soon. From October 15-23, 2011, the Arizona State Rifle & Pistol Assn. will host the 8th Western CMP Games and Creedmoor Cup at the Ben Avery Range in Phoenix, AZ. The Western CMP Games Matches run from October 15 to 18. The Creedmoor Cup Matches take place on 19-23 October. All interested shooters, from novices to High Masters, are invited to participate. All entrants should pre-register. However, walk-ons will be allowed as range capacity permits.
The Western CMP Games program includes clinics, individual rifle matches, Team Matches, Rimfire competition, and CMP rifle sales. The 8th Western CMP Games kick off with a New Shooter Clinic on 15 October followed by a 200-yard Garand-Springfield-Vintage Military Rifle Match that afternoon. On Sunday, 16 October, there will be an As-Issued M1 Garand EIC Match in the morning where shooters who do not have any EIC points can earn introductory “4-point legs.” That afternoon, there will be a Rimfire Sporter Match. The Rimfire Sporter Match is a low-key event that caters to all ages and skill levels.
On Monday, 17 October, there will be a second Garand-Springfield-Vintage Military Rifle Match that morning followed by an M1 Carbine Match that afternoon. The Western CMP Games Matches conclude on Tuesday, 18 October, with a third Garand-Springfield-Vintage Military Rifle Match, and Vintage Sniper Test Match. For more info on the CMP Games, contact the CMP at croguski@odcmp.com or call (888) 267-0796, ext. 1114.
Creedmoor Cup Clinic and Matches
The Creedmoor Cup matches will take place on 19-23 October, starting with a High Power Rifle Clinic offering lectures, demonstrations and dry line firing. Creedmoor Cup matches include a Zeroing Match, an EIC Match, a 2400 Aggregate Match and a Team Match. New This Year: The Creedmoor Cup will not longer be a one-day, 80-shot (800 point) match. It will not be a 240-shot (2400 point) Aggregate fired over three days. The 50-shot team match will now be fired on Sunday prior to the start of the EIC Match.For more information on the Creedmoor Cup Matches, contact Dennis DeMille at demille [at] creedmoorsports.com or call (800) 273-3366.
The IBS 600-Yard Nationals was held this past weekend at the Midwest Benchrest Range in Yukon, Missouri. There was a good turn-out for the match, with 70 Light Gun (LG) entries and 68 Heavy Gun (HG) entries from all over the USA. Despite tough conditions (high winds on Friday, wicked mirage on Saturday), the top shooters turned in some impressive performances, including a 16-target average group size of 2.327 inches by overall Two-Gun Winner Sam Hall of North Carolina. No one was surprised to see Sam, a multi-time 600-yard Champ, come out on top. When he’s on his game, Sam’s hard to beat.
But the big story of the match was the superb shooting of Ryan Hunt from Missouri, a relative newcomer to the 600-yard benchrest game. Ryan finished second overall in the Two-Gun after finishing second in Light Gun (LG) group, third in LG score, and third in Heavy Gun (HG) group. Ryan’s average group size, for the entire match (both LG and HG) was 2.629 inches. That’s amazing marksmanship for a rookie… using a borrowed rifle!
Hunt Makes the Most of “Loaner” Rifle
What makes Hunt’s runner-up finish even more impressive is that, in both LG and HG, he used a borrowed gun, a 6mm Dasher in a new, 5″-wide Precision Rifle & Tools stock. Now get this — the very first time Ryan shot that gun was the day before the Nationals! Ryan told us the 5″-wide stock really tracked well, allowing him to shoot fast and accurately. Will we see more extra-wide stocks in Light Gun in the future? Ryan Hunt thinks so: “I think 5″ is the way to go. That’s all I’ll be shooting next year. The extra width really makes a difference in the way the gun tracks. You don’t have to worry about rolling or hopping. Just pull the trigger, slide her back and you’re on target. The biggest benefit from these 5″ stocks is that a Light Gun’s going to track like a Heavy Gun. When the mirage picks up, instead of following the dot, you can just trust the gun, the way it’s tracking. It really paid off last weekend.” It’s worth noting that Ryan did not use the old standby powders, Reloder 15 or Varget. In his Dasher, Ryan loads IMR 8208 XBR powder with Spencer bullets.
Sam Hall with his Heavy Gun
Match Winner Sam Hall, like most of the top performers at the 2011 Nationals, shot a 6mm Dasher in both classes. But unlike Ryan Hunt, Sam used a “true heavy” in HG class. Sam’s mammoth Heavy Gun, dubbed “Black Max”, is featured in a Gun of the Week Article in our archives. You can see Sam practicing with this rig above. Sam hauls out his “heavy artillery” once a year for the Nationals: “This rig won’t see daylight again until the next Nationals.” In Light Gun, Sam used the same 17-pounder he’s used to win previous championships. It features a BAT action, Krieger Barrel and Shehane ST-1000 fiberglass Tracker stock. Sam shoots Berger bullets with Alliant Reloder 15 powder.
Tough Conditions Both Friday and Saturday
Sam told us: “All eight LG targets were shot Friday. And the Heavy class shot all eight on Saturday. Friday had winds of 13 to 18 mph with gusts up to 25 mph. Saturday was less windy, but was switchy. Mirage was some of the worst I’ve ever encountered. These conditions caused vertical groups.”
We asked Sam if he had any special strategies for the match: “My only strategy was to make sure I got my sighters right. Last year I misjudged some sighters on a gong. I thought I was centered but I was actually way high and right. I ended up shooting a small group, but the score was really bad. This year I made sure I knew where the sighters were actually hitting.” You can learn more about Sam and his rifles in a Gun of the Week Article from our archives.
Dashers and Cut-Rifled Barrels A quick glance at the above equipment list for the Top 10 Two-Gun finishers, reveals the winning formula: 6mm Dasher in a cut-rifled barrel. Eight of the Top 10 competitors shot 6 Dashers in both classes, while another shot a 6 Dasher in HG and a 6 BRX in LG. That’s “Dasher Dominance” for sure. Among the barrels, cut-rifled tubes from Bartlein, Brux, and Krieger were favored by most of the top shooters. It’s hard to argue with success.
Shiraz Balolia has recently been appointed as Captain of the U.S. F-Class Open Rifle Team. Balolia served as Vice Captain of the previous team and was one of eight American shooters at the last World Championship held in England in 2009. He was also one of four shooters in the International Team matches in England where Team USA won the Gold Medal. The step up from Vice Captain to Captain brings new responsibilities, but Balolia told us he accepts his new role “with honor and a fierce passion to lead the team to gold in the 2013 World Championship”.
USA Will Host 2013 F-Class World Championship
With the 2013 F-Class Championship being hosted by the United States for the first time ever, Balolia and the U.S. team are determined to win the Gold Medal on home soil. Team tryouts commenced in 2010 and will continue until the complete Development Team is selected in early 2012, from which the main 2013 team will be chosen. Balolia added: “I am excited to have been given the opportunity to lead this team into the next World Championship. The shooters we have are absolutely incredible, and everyone has a single goal in mind… and that is to Win!”
2013 F-Class World Championship | Raton, New Mexico (USA) | August 23-27, 2013
The next F-Class World Championship will be held in Raton, New Mexico, from August 23 to 27, 2013. This will be the fourth F-Class World Championship and first time it is being held in the United States. Previous F-Class World Championship venues were:
2002 – Ottawa, Canada. Won by the USA.
2005 – Bloemfontein, South Africa. Won by South Africa.
2009 – Bisley, England. Won by Great Britain.
As you can see, historically, home teams have won in the past two events. This bodes well for Team USA’s chances in 2013.
U.S. F-Class Championships Will Precede Worlds at Raton
Preceding the World Championship, the 2013 US F-Class National Championship will be held from August 18 to 22, 2013. All F-classers are welcome to register. With the U.S. and World Championships scheduled back-to-back, August 2013 should offer the most memorable 10 days of F-Class competition ever conducted in North America.
To learn more about the US F-Class Open Team, visit www.usfclass.com.
The October issue of Shooting Sports USA is now available. The October issue features complete coverage of the 2011 National Rifle and Pistol Championships at Camp Perry in an extended 42-page issue. The Smallbore, High Power, and Long Range phases of the National Rifle Championships are all covered in this issue, as well as the National Defense Match. You’ll find links to videos describing the National Trophies. There’s even a special note on how to stay in one of the historic huts on the Camp Perry base.
Shooting Sports USA Editor Chip Lohman interviews Philip Hemphill, the 10-time National Police Pistol Combat Champion. Hemphill won his first National Pistol Championship at Camp Perry this summer.
The October issue also features the second installment of a three-part series on how to deal with the pressure of competition. This segment features expert advice from top shooters such as Bianchi Cup Ladies Champions Jessie Harrison and Julie Golob.
Here’s a simple tool that may benefit you AR15 and AR10 shooters out there. The G&G Tools’ Bolt Cleaner and Polisher uses a radiused scraper with a cleaning pad to remove stubborn carbon from the tail of your AR bolts. The G&G Tool is offered in both a .223 version and a .308 version, both priced at $29.99. There is also a more basic (scraper only) unit for $19.99.
There are other ways to remove carbon (soaking in solvent and scraping with a knife), but G&G’s tools make the job quick and easy. Credit The Firearm Blog for finding this device. Watch the video below to see the tool in action.
It’s big (40mm tube, 48 ounces), it’s powerful (52X max magnification), and it’s wickedly expensive ($3,695.00 MSRP). The new IOR 12-52x56mm “Terminator” is designed to “raise the bar” among rifle optics — to be the new Gold Standard. Is the new fat-tube 12-52X IOR really as “bad-ass” as its “Terminator” name implies? Well it does have some impressive features, starting with 100 MOA of vertical elevation travel (25 MOA per revolution). It also boasts ultra-high-grade Schott HD glass, digital illumination with auto shut-off, optional interchangeable BDC rings, and a Fast-Focus eyepiece.
But the real innovation is the Terminator’s proprietary Mid-Focus Parallax adjustment. Handier than old-fashioned front-adjusting objectives, this new mid-focus system dispenses with sometimes-troublesome side-focus knobs. Look at the photo below. You’ll see a wide ring about 3″ ahead of the turret housing. Rotate that to set the focus for your target distance — anything from 21.5 feet to infinity.
1/4″ Clicks and Tiny Exit Pupil at Full Magnification
With 52-power magnification on tap, you’d think IOR might offer 1/8th MOA clicks, at least as an option. However, the click value is listed at “1/4 inch”. Apparently, the Terminator scope, as launched, has one reticle choice, a new design, the “MP-8 EXTREME MOA-X1″. Below is a photo of the reticle taken by dealer Citadel Gun & Safe which has Terminators in stock for $3599.00. The reticle has 1 MOA stadia (hash marks), alternating in line length (taller vs. shorter). We’re informed that the markings are 1 MOA at 26X, so they’d be 1/2 MOA at 52X. It also has four sets of hold-over lines (set in +5 MOA intervals), with 1 MOA stadia running out from center. This will let you hold-off for windage, while simultaneously holding-over for elevation correction. We think this reticle is too “busy”, but it may appeal to some folks. Frankly, we are surprised that the front objective is only 56mm. This means that the exit pupil will be a tiny 1.08mm at 52 power. That’s really quite marginal. A 50+ power scope should have a larger front objective. CLICK HERE for More Photos (scroll to bottom of linked page).
Story Tip by EdLongrange. We welcome reader submissions.
An 1836 Colt Paterson Revolver (with accessories in box), sold last month for $977,500 at a Texas auction. This is believed to be a new world record for the sale of a single American firearm. The very rare, ivory-gripped Texas (Holster Model No. 5) Paterson Revolver was part of the Alfred (“Al”) Cali Collection of Colt firearms. The revolver, with a 9-inch barrel and attached loading lever, is the finest known surviving example of Samuel Colt’s first revolver, produced by the legendary gunsmith in Paterson, New Jersey in 1836.
Colt Purchased by Silicon Valley Zillionaire
The 1836 pistol, one of the earliest generation of Colt revolvers, was purchased by an unidentified West Coast collector, a Silicon Valley mogul. The gun was sold September 18 as part of Greg Martin Auctions/Heritage Auctions’ Signature Arms & Armor Auction in Dallas. “There are certain collectibles that transcend genre, period and form and exist simply as great works of art,” said Greg Martin, “and clearly this supremely beautiful firearm is such a thing. The nearly seven-figure final price realized proves just how great a piece this is, and well worthy of being the world record-holder. This is as desirable… as any piece I’ve seen in more than 40 years of buying and selling the very best firearms in existence”.
Two More Boxed Colt Revolvers Sell for Over $800K Each
A pair of Colt revolvers tied for the September auction’s second most valuable lot, both realizing jaw-dropping $805,000 prices. The first was an exceptional historic, cased, engraved and presentation-inscribed Colt Model 1861 New Model Navy Revolver. The second was an historic, cased Gustave Young-engraved and ivory-gripped Colt Third Model Dragoon Revolver, inscribed ‘Colonel P.M. Milliken”. Both these guns were from the Al Cali collection, like the record-setting 1836 Paterson.
The 2011 F-Class National Championships in Lodi, Wisconsin are now history. Hail the new Champions: Jim Murphy, F-Open (1331-55X) and Jeff Rorer, F-TR (1315-41X). Hosted by the Winnequah Gun Club, the Nationals were well-attended, with 61 F-TR competitors and 90 F-Open shooters. The F-Open race was incredibly tight, with just four (4) points separating first through fifth positions. In F-TR, runner-up John Weil shot incredibly well in the crazy conditions on Friday. John made up a bunch of points, but it wasn’t enough to grab victory from Rorer, who shoot well all three days. CLICK HERE for Complete Match Results. Sorry, we don’t have an equipment list at this time.
Final Results for F-Open (TOP 10):
1. JIM MURPHY: 1331-55X
2. DON J NAGEL: 1330-46X
3. DAVID GOSNELL: 1329-61X
4. JOHN BREWER: 1328-62X
5. ROBERT BOCK: 1327-64X
6. RICK JENSEN: 1326-62X
7. DAVID MANN: 1326-57X
8. CHARLES BALLARD: 1325-59X
9. DANNY J BIGGS: 1324-62X
10. BOB PASTOR: 1324-47X
Final Results for F-T/R (TOP 10):
1. JEFF RORER: 1315-41X
2. JOHN H WEIL: 1308-42X
3. LAURA PERRY: 1307-39X
4. CHRIS OZOLINS: 1305-34X
5. JOHN CHILTON: 1303-39X
6. DARRELL BUELL: 1300-49X
7. IAN KLEMM: 1300-43X
8. DANIEL POHLABEL: 1296-43X
9. MARK HOUSEMAN: 1296-35X
10. MICHELLE GALLAGHER: 1292-35X
Forum member Darrell Buell provided Match Reports for our Shooter’s Forum. Darrell, who finished sixth in F-TR Class at this year’s Nationals, explained that conditions were erratic throughout the week — changing from one day to the next:
“The first day in Lodi was the 600-Yard stage. The winds were relatively light, no more than two minutes, but they had some tricky pick-ups and let-offs, and some vertical thrown into the mix. The weather was excellent, temps in the mid 60s, with rain threatening most of the day, but only producing a few sprinkles for the last two (of six) relays. Day two saw the Shooters move back to the 1000-Yard line. The weather was beautiful, temps in the mid to high 60s, with partly sunny skies. Winds were stronger than they were at 600 the day before, and there was a good deal of vertical noticed by the competitors.
The final day of the Nationals saw wild conditions, with unpredictable gusty full value winds. Congratulations go to John Weil for a superb performance in difficult conditions Friday. Thanks go to the Liebetrau clan for running another Nationals.”
SOCOM, the U.S. Special Operations Command, is going silent in a big way — purchasing $23.3 million worth of suppressors (and adapters) from Surefire, LLC of Fountain Valley, California. The huge contract, for an indefinite quantity of sound suppressors, suppressor adapters, blank firing adapters and training adapters, was awarded by officials of the Naval Surface Warfare Center — the primary solicitation center for U.S. Special Operations Command — as part of the Family of Muzzle Brake Suppressors (FMBS) contract.
This is good news for SureFire, which has expanded its product line from durable, high-output lamps to a wide variety of tactical hardware. It was a major coup for SureFire to secure a large part of the FMBS contract. According to Surefire: “The FMBS solicitation was the most comprehensive modern suppressor evaluation conducted by the U.S. military to date. [Suppressor systems were] subjected to prolonged testing on a variety of firearms platforms. SureFire suppressors were chosen based on test criteria such as: Reliability, Sound Reduction, Accuracy, Point of Impact Shift, Endurance/Durability, and Operational Suitability. While these requirements reflect the suppression needs for firearms including the MK13 sniper rifle, the United States Marine Corps is already employing SureFire’s FA762SS suppressor system on every M40A5 sniper rifle.”
Watch Video to View SureFire Fast-Attach Suppressors in Action
Russian Lead-Free Primers Tested
The Western CMP Games/ Creedmoor Cup start very soon. From October 15-23, 2011, the Arizona State Rifle & Pistol Assn. will host the 
The Western CMP Games program includes clinics, individual rifle matches, Team Matches, Rimfire competition, and CMP rifle sales. The 8th Western CMP Games kick off with a New Shooter Clinic on 15 October followed by a 200-yard Garand-Springfield-Vintage Military Rifle Match that afternoon. On Sunday, 16 October, there will be an As-Issued M1 Garand EIC Match in the morning where shooters who do not have any EIC points can earn introductory “4-point legs.” That afternoon, there will be a Rimfire Sporter Match. The 
The IBS 600-Yard Nationals was held this past weekend at the 
A quick glance at the above equipment list for the Top 10 Two-Gun finishers, reveals the winning formula: 6mm Dasher in a cut-rifled barrel. Eight of the Top 10 competitors shot 6 Dashers in both classes, while another shot a 6 Dasher in HG and a 6 BRX in LG. That’s “Dasher Dominance” for sure. Among the barrels, cut-rifled tubes from Bartlein, Brux, and Krieger were favored by most of the top shooters. It’s hard to argue with success.
Shiraz Balolia has recently been appointed as Captain of the 
The October issue of 
Here’s a simple tool that may benefit you AR15 and AR10 shooters out there. The 
SOCOM, the U.S. Special Operations Command, is going silent in a big way — purchasing $23.3 million worth of suppressors (and adapters) from 
