Monitor Barrel Heat with Pocket Infrared Gauges
You never want to run the barrel of a precision rifle too hot. Excessive barrel heat kills accuracy, increases copper fouling, and can cause rapid barrel throat wear. Over the years people have devised various means to cool their barrels — from electric fans to dunking in tubs of ice water.
But how do you know if your barrel is too hot? Consider a “non-contact” thermometer that reads your barrel’s “infrared signature”. The RadioShack or Kintrex pocket-sized, non-contact IR thermometers are ideal for shooters at the range or in the prairie dog fields. Both are handy and inexpensive — costing roughly twenty-five bucks ($25.00) for each device.
Pen-Sized Thermometers
Just 3.2″ long, and weighing a mere 1.3 ounces, the waterproof RadioShack and Kintrex thermometers are small enough to carry in your pocket, and will easily stow in any range bag/box. The Kintrex unit measures from -67 to 428 °F (-55 to 220 °C), while the cheaper RadioShack model measures from -27 to 230º F (-33º to 110º C). Kintrex is a respected manufacturer that also makes larger hand-held IR thermometers for industrial and shop applications. A little infrared thermometer like this is a gadget that every serious shooter should have. Given the cost of replacing barrels these days, can you afford NOT to have a temp gauge for your match or varmint barrel?
TECH TIP — How to Get More Consistent Readings
When using IR Thermometers on shiny steel barrels, sometimes the polished surface throws off the beam, causing inconsistent readings. You can solve this problem by simply putting a piece of masking tape on the area where you take your reading. Some other folks use a grease pencil to create a non-reflective spot to read. Forum Member Jon B. says: “I used an Exergen infrared in the HVAC industry. Without the grease crayon they sold, you couldn’t get an accurate reading with shiny metals.”
The CMP National Matches at Camp Perry, Ohio commence with the First Shot Ceremony on Monday, June 26, 2017. That’s just two days away! With the NRA having moved the National High Power Rifle Championships away from Camp Perry to Indiana this year, the CMP has stepped into the breach, offering more matches in the first part of the June 2017 National Match Schedule.
In the opening week of the National Matches schedule, June 26-30, 2017, the Civilian Marksmanship Program (CMP) will lead off with CMP Service Rifle and CMP Match Rifle events, called the CMP Cup Matches. The CMP Cup series includes: CMP Four-Man Team Match, CMP 800 Aggregate Matches, and CMP Excellence-in-Competition (EIC) Service Rifle Match. This will be followed by pistol events July 1-2, and July 9-13, 2017.
On July 14-25, the CMP conducts its second set of National Matches rifle events including the CMP National Trophy Rifle Matches, and CMP Rifle Games Events. Notable special events will include the President’s 100 Match (July 17), National Trophy Team Match (July 20), the CMP Garand Match and M1A Match (July 22), and the Vintage Sniper Match (July 24). The Sniper Match was the brainchild of Hornady’s Dave Emary. The competition was inspired by his father, a World War II scout sniper, who carried a rifle similar to the 1903A4 rifle builds found today on the Camp Perry firing line.
Hornady’s Dave Emary and “Gunny” R. Lee Ermey (right) at Vintage Sniper Match:
Rimfire Sporter — Fun for the Whole Family
The CMP’s final event, the hugely popular National Rimfire Sporter Match, will be held on Saturday, July 29 (see below). For more information, visit the CMP 2017 National Matches website.
Watch Highlights from the 2016 National Rimfire Sporter Match:
This year, NRA High Power events and major rifle championships will be held in Indiana, at Camp Atterbury. The American Rifleman website explains: “The High Power Rifle Championships have a new venue, exciting side matches and the opportunity to shoot at a mile. Preparations for the 2017 NRA National High Power Rifle Championships at Camp Atterbury (near Edinburgh, Indiana) are proceeding well. The Indiana National Guard is making improvements to firing lines, housing is open for reservations, and buildings have been selected for administrative needs[.] NRA and the Indiana National Guard are working hard to make this year at Camp Atterbury a memorable one.”
The championships will be conducted July 7 to 25, 2017, and they will include Across-the-Course (XTC), Mid-Range, and Long-Range matches, as well as classic trophy matches — such as the Leech Cup and the Wimbledon Cup… and, of course, Palma competition.
Match Schedules Adjusted to Allow Travel Time
The shooting schedule has been adjusted to give competitors time to travel between events held at different locations. Following the completion of the XTC matches, competitors will have a day to travel to Camp Perry, Ohio, should they wish to attend the Small Arms Firing School and shoot the Civilian Marksmanship Program National Trophy Matches. Similarly, Smallbore Prone competitors in Bristol, Indiana, will have a day of travel to arrive at Camp Atterbury to participate in the High Power Mid-Range and Long-Range Prone matches.
NRA National Championship Rifle Events in Indiana
The NRA has moved the National High Power XTC Rifle Championship, Mid-Range Championship, and Long Range Championship away from Camp Perry, Ohio, starting in 2017. Starting this summer, all these events will henceforth be held at Camp Atterbury, Indiana. That means if you want to compete in both CMP and NRA rifle matches, you would need to go two different venues, located 280 miles apart, in two different states.
Some major players in the shooting world — Lapua and Berger Bullets, have joined forces under the Nammo AS umbrella. And now, along with Vihtavuori and SK, these businesses will be operated together as Capstone Precision Group, LLC. And Capstone will soon have a new facility in Missouri. A new 30,000-square-foot logistics center has been leased in Pettis County, outside Sedalia. From here, products will be sent to dealers and wholesalers throughout the USA. Capstone Precision Group will invest almost $1 million to launch the new facility.
Missouri’s Governor welcomed Capstone: “Capstone Precision Group’s decision to grow its business in Missouri is great news for families in rural Pettis County. This new distribution center means new quality jobs for hard working Missourians,” said Gov. Eric Greitens. “We’re grateful to Capstone Precision Group for recognizing that Missouri is open for business and our people are ready to work.” LINK: Missouri Department of Economic Development.
NEW Logistics Center for Capstone Precision Group
Nammo AS, an international aerospace and defense company headquartered in Norway, announced that the newly-formed Capstone Precision Group LLC will launch its U.S. logistics center in Pettis County, outside Sedalia. This facility will be the U.S. logistics center for Capstone Precision Group’s four commercial ammunition brands — Lapua, Berger, VihtaVuori, and SK. Additionally, ammunition, components, and smokeless powder will be imported from Finland and Germany and distributed in the U.S. and also exported, while projectiles from the company’s Mesa, Arizona, location will be shipped to Missouri for packaging and distribution.
IBS 31st Annual Memorial Match at Union County Sportsmen’s Club, Weikert, PA Reported by Jeff Stover, IBS President
The “Boop Shoot” is traditionally held on Mother’s Day in May, but this year it was moved to June due to a club conflict. No matter, as 63 shooters showed up on June 10th and 11th, 2017 to compete at one of the best benchrest ranges in the country. “Weikert” is nestled in a narrow valley in pastoral central Pennsylvania and has a wide following since the IBS Nationals have been held there a number of times.
The 2-Gun Aggregate represents “all the marbles” — the overall win for a weekend of Short Range Group shooting. Accuracy gunsmith Dave Bruno won the 2-Gun with a .2606 Agg shooting his 6PPC built on a Borden action in a Roy Hunter stock. On Dave’s heels was Al Auman, shooting a Goodling-built 6PPC BAT. In third place was Paul Mitchell with his BAT 3-Lug in a Scarborough stock built by Dwight Scott. The 2-Gun Aggregate is the combined average group size for 20 targets total, 10 each for both the Light Varmint (10.5-lb) and Heavy Varmint (13.5-lb) classes, with shooting at both 100 and 200 yards. Despite the class distinctions based solely on rifle weight, a vast majority of shooters opt for a 10.5-lb rifle for the entire course of fire. You get a lot of shooting at an IBS Registered Group match.
Two-Gun Overall Winner Dave Bruno (center) flanked by second place Al Auman (right) and third place Paul Mitchell (left).
The Tailwind from Hell
The real story of this match was the shooting conditions. For the entire weekend, there was a tail wind. When the wind blows hard, a pure tailwind is favored by many veteran shooters as velocity changes are less apparent on the target compared to a pure crosswind where pickups and letups can be mapped on the record target of a less-than-observant trigger puller. At this match, it was a tailwind from hell. The over-the-shoulder wind veered from red (right to left) to green (left to right) as quickly as it took you to read this sentence. The point of impact in the extremes could cause groups of 1.5 inches at 200 yards. It was one of those shoots where posting a .824” 200-yard group could move you up in the standings. Normally shooting an “eight” would assure a “bottom of the pile” finish.
Sunday morning saw that nefarious tailwind doing its dirty work once again, but it was not quite as bad as the afternoon would turn out to be. The tailwind’s impact, however, could be seen in the fact that the Heavy Varmint 200-yard winner was upstate NY shooter, Jim Miller with a .2817 (200-yard Aggregates are recorded in MOA, so Jim’s average group at 200 yards was .563”). He was the only competitor in the “twos”. Bob White shot well but his .3012 was not enough.
Scott Miller ready to pull the trigger on the firing line…
Dave Bruno Dominates Light Varmint 200
Light Varmint 200 was shot after lunch on Sunday. The winds had picked up while the shooters were enjoying burgers and hot dogs from the range house. This last Aggregate was the climax of the entire weekend. Two-gun winner Dave Bruno set the stage for his overall win by shooting as if he were from another planet. He was on fire with a .2388 Aggregate. Next was Bob Brushingham with a .3024. That is a difference of .0636” in average group size, or about 1/16th of an inch. A sixteenth is not much in most things, but in short range benchrest it is a chasm that Evel Knievel would not dare to test. Most Aggregates in benchrest are won and lost by a few thousands, or even ten-thousands of an inch. Dave blew out the field with his singular performance. When asked what condition he shot, Dave said “the tailwind” — go figure.
Yes, 100-yard was also contested. Back in the day, a “Teen Agg” (an aggregate of targets under .200”) was usually shot in perfect, or mild, readable conditions. The level of shooting in recent years, however, has seen Teen Aggs shot in tough conditions. The aforementioned tailwind prevailed on Saturday too, but was just a bit less nasty.
Loading at the range remains important in the Benchrest for Group discipline. In a Special Report below, IBS President Jeff Stover explains how loading methods (and hardware) have evolved over the years.
Pat Hurley checking his aim (notice bolt is out).
Two Gun Overall
1. Dave Bruno: .2604
2. Al Auman: .2727
3. Paul Mitchell: .2776
4. Bob Brushingham: .2851
5. Kent Harshman: .2969
Heavy Varmint Grand
1. Jim Miller: .2582
2. Bob White: .2622
3. Allen Arnette: .2706
Light Varmint Grand
1. Dave Bruno: .2375
2. Al Auman: .2717
3. Paul Mitchell: .2770
Light Varmint 100 was won by veteran Howie Levy (he started shooting in 1968!) with a .1794. He was not alone below .2, as Dale Boop was close at .1848. He was shooting Norma 201 to boot. This powder was the ticket to small 6PPC groups in the 1980s, but has been little seen for many years.
More Teen Aggs were shot in the Heavy Varmint relays. Benchrest Hall of Fame shooter Allen Arnette recorded a tiny .1686. On the podium with Allen were Howie Levy with a .1808 and Willie Bauer who shot a .1980.
Light Varmint Trophy Winners (L to R): Hensley, Boop, Auman, Brushingham, Francis, and Bruno.
Memorial Shoot Is a Family Affair
The 2017 Annual Boop Memorial Shoot ran like clockwork, as usual, and once again the success of this annual shoot can be attributed to the Trutt and Boop families. Mark Trutt serves as range officer extraordinaire. Dale Boop is match director while his mother, Linda, handles the administrative and scoring chores. Target crew honcho Steve Dodge, once again, ensured a rapid and accurate changing of the target.
NOTE: It has yet to be determined whether 2018 Memorial Match will be on Mother’s Day or in June.
Loading at the Range — Then and Now
In benchrest shooting for group, loading at the range has been de rigueur for decades. In the Score discipline, preloading is usually the custom. The main reason is that, in Score competition, only one Aggregate (warm-up match and five record targets) per day is usually shot. That would be less than 50 shots, assuming a few sighter shots. Also, the 30BR, the dominant Score cartridge, is amenable to pre-loading.
By contrast, the Group discipline includes 21 targets (two warm-ups and twenty record targets) over a weekend, usually shot with 6PPC-chambered rifles. Many times, the 6PPC shooters may tweak their loads through the day given changing atmospheric conditions or simply trying to find the correct tune to “dot up”. This term, “Dot up”, means the shots are essentially going through the same hole, or closely so.
Loading at the range was a bit different when benchrest competition was in its infancy. The 1951 book, Modern Accuracy by Bob Wallack, is the best of the early benchrest books. Copies can be found, from time to time, on eBay or Alibris. It is a fascinating survey of benchrest as it existed more than six decades ago. There’s even coverage of a controversial target that was argued over at the time. In it, there is a photo of Wallack using the rear bumper of a car at the bench to clamp his reloading tools. Things have come a long way compared to the range loading set-ups of modern shooters. Here you can see Bob Wallack way back in 1950:
Modern loading bench set-ups shown in this Boop Memorial Match Report belong to top shooters Howie Levy, Bob Hamister, and Kent Harshman.
Posted on June 21, 2017 by Sierra Bullets Written by Sierra Bullets Ballistic Technician Gary Prisendorf
I recently purchased 1,000 rounds of once-fired 5.56 LC brass that was fully processed and ready to load. The brass had been wet tumbled, using stainless steel pins and looked great inside and out, including the primer pockets.
I had always used a vibrating tumbler with either corn cob or walnut media and I always thought my brass looked pretty good until I saw what the wet tumbling and pin combination did.
Being the budget minded reloader that I am, I started looking for a cheap way to wet tumble my brass using stainless steel pins. Harbor Freight had recently opened a store nearby and I had received coupons in the mail, one of the coupons was 20% off any one item.
So I headed for the Harbor Freight store and after roaming around for 20 minutes or so I found a dual drum rotary rock tumbler for $55.00 and thought it would do just fine for what I was planning. The drums are rather small and only have a 3 pound maximum load limit each, but I figured that was big enough for around 150 .223 cases or maybe 300 9MM cases at a time.
I pulled the wrinkled up coupon out of my pocket, paid, and walked out with my new $47.00 brass cleaning machine. I didn’t have any stainless steel pins and couldn’t find any locally. At our local hardware store I picked up some brass plated ½” finishing brads that I thought might work until I could get some pins ordered.
I bought two small packages of the finishing brads(1.75 oz.), for $1.69 each then headed to my local Walmart to pick up some Dawn dish soap (.99 cents) and a bottle of Lemi Shine ($3.27). I had read online that is what a lot of people use for cleaning their brass.
I bought two small packages of the finishing brads (1.75 oz.), for $1.69 each then headed to my local Walmart to pick up some Dawn dish soap (.99 cents) and a bottle of Lemi Shine ($3.27). I had read online that is what a lot of people use for cleaning their brass.
When I got home, I started depriming .223 brass for my new toy, I mean brass tumbler. I deprimed 100 cases, put 50 in each drum, dropped a package of brads in each one, filled them ¾ of the way with water, gave each drum a small squirt of Dawn dish soap and a tablespoon of Lemi Shine. I sealed up the drums and fired up the tumbler.
After an hour and a half, I just couldn’t stand it any longer and had to see the results. The water was filthy but the cases were super clean, I couldn’t be happier. For a total investment of around $55.00, I can now get my cases looking almost new.
Here are the before and after pictures of my first run of brass:
I have since ordered two pounds of stainless steel pins, I put one pound in each drum. To be honest the brass really doesn’t look any better, but the pins don’t seem to get stuck inside of the cases near as bad as the brass-plated brads did.
Tip: Make sure to inspect your cases and look inside each case to ensure all of the brads/pins are removed.
Just lay the brass and brads/pins out on a towel and let them dry. Mine were dry after about 12 hours.
If you want your cases to look like new without breaking the bank, give it a try. You can’t clean 1000 at a time like the $200.00 tumbling machines that are made for specifically for brass, but this is a much cheaper alternative and the results speak for themselves. — Gary Prisendorf, Sierra Bullets
EDITOR: Actually you can get a machine for a whole lot less than $200.00! See the next paragraph.
Lyman Cylone Rotary Tumbler with Factory Rebate
Sierra’s Technician got his rotary tumbler and brass media for $55.00. For about twice that you can get a much better, higher-capacity system from Lyman. The Lyman Cyclone Rotary Tumbler features a large, polymer drum that holds up to 1000 .223 Rem cases. The kit includes media separation trays, plus five pounds of correct STAINLESS media. The Lyman Cyclone system costs $156.54 delivered from Amazon but this product qualifies for a $25 REBATE from Lyman. That puts your net cost at $131.54 for a complete Cyclone system. To be honest we think that’s money well spent, compared to the “El Cheapo” Harbor Freight unit. The Lyman will run six times as many .223 Rem cases, and get the job done faster. We suspect long-term durability will be better with the Lyman tumbler as well.
Are you a wildcatter? We know many of our readers like to invent new cartridge types. If that applies to you, here’s a great resource…
Fred Zeglin has released a Kindle eBook edition of his popular book Wildcat Cartridges — Reloader’s Handbook of Wildcat Cartridge Design. Gunsmith/author Zeglin explains: “The print edition of Wildcat Cartridges has gone out of print. We have plans to produce a second edition, but that is currently on the back burner. Demand of this book has remained strong so the decision to offer the first edition in a e-book format was made.” The Kindle eBook edition retails for $9.99 on Amazon.com. You can preview a FREE SAMPLE of the book to “try before you buy”.
This is more than just a history of cartridges. Dimensional drawings and loading data accompany many cartridge descriptions. More recent/popular designs are included as well as “classic” older wildcats. There are chapters about important cartridge designers like P.O. Ackley, Jerry Gebby, Rocky Gibbs, and Charles Newton. (The hardback edition of the book contains 288 pages of stories, illustrations, instructions, and data.)
Gunwriter Wayne Van Zwoll says Zeglin’s book is a valuable resource: “Fred has illustrated his book well, with neat line drawings and photos you probably won’t find anywhere else. It’s a rare technical treatise that draws you in with illustration, or that keeps you with an easy flow of chat that, were it lifted from print, might pop up at any gun counter or handloading bench. Fred Zeglin has done well with this book, giving wildcatters – indeed, all rifle enthusiasts – an overview of a culture often mentioned but little explored on the page.”
Writing about the 2005 Print Edition of Wildcat Cartridges, Big Bore Journal declared: “This is a fantastic book on American wildcats, U.S. loads and much more. A must have for wildcatters and gunsmiths.”
By Steve Cooper, CMP North General Manager & Ashley Brugnone, CMP Writer
In disappointing fashion to all involved, the CMP [cancelled] its June 17 Excellence-In-Competition match when significant damage was done to the target system following the successful completion of standing and rapid-fire sitting stages at 200 yards by nearly 100 competitors.
Nearly 100 competitors took to the firing line on Viale Range for Saturday’s EIC Rifle Match.
The CMP EIC match was the historic debut of the latest in scoring technology on the “big” ranges at the 101-year-old Ohio National Guard training site near Port Clinton. The match fired on Viale Range was a fill-in for a previously cancelled Ohio Rifle & Pistol Association event. CMP is in its second year of operating 10 electronic target lanes at 100 yards for rifle and five lanes for pistol at Camp Perry’s Petrarca Range. CMP also operates two 80-point electronic indoor airgun ranges at Camp Perry and Anniston, AL, respectively.
During the changeover from 200 to 300 yards at the Saturday event, multiple targets were damaged when newly-trained CMP target workers accidentally strained or tore several interconnecting cables on the target line while raising and lowering target carriers. Diagnostics showed several targets were showing errors, but CMP technicians believed many targets could be salvaged and some were repaired.
The loss cut the range from 35 to 19 serviceable targets. CMP staff and competitors agreed to shrink the size of the range, re-squadding shooters into more relays on the remaining working targets. After repairs were made, firing continued with the prone rapid-fire stage at 300 yards. When firing was complete, a handful of shooters received inconsistent information on their monitors. A re-fire was conducted for that group and many of the re-fire group still reported target errors.
Members of CMP staff convene to discuss abnormalities during the 300-yard prone rapid-fire stage of the EIC Rifle Match. Moments later, the match was called off after it was determined too many targets were compromised by damaged cables in the Viale Range pits.
It became clear that the initial damage to the target communication system was worse than originally thought. Christie Sewell, CMP Programs Chief, explained to competitors that it was impractical to go any further and had no choice but to cancel the match. CMP offered refunds to all competitors or the option of crediting their entry fees to a future match. The match did not count toward the competitors’ EIC match total for 2017.
The Takeaway from this Experience – CMP is a Pioneer in the Electronic Target World
They say it’s easy to recognize pioneers — they’re the ones with arrows in their backs. It feels that way sometimes at the Civilian Marksmanship Program as we roll out the most sophisticated electronically-scored targets in the world to America’s bullseye rifle and pistol shooters. Sometimes we make mistakes and they cost us time, money and aggravation.
Cables carry power + communications from target to target the length of the line. Many places between targets can trap and catch cables. The loss of 1 cable can take out 5 adjacent targets.
But we press on. And the competitors who understand our goals press on with us. We pull the arrows out of each other’s backs, cover shot holes with thick-skin pasters, learn from our mistakes and press on with our mission. That mission includes safety instruction, youth marksmanship fundamentals, growing the sport of bullseye target shooting and providing our competitors the best opportunity to maximize participation in this sport.
What Actually Went Wrong on Saturday
Those familiar with the KTS targets at the CMP Talladega Marksmanship Park know they are hard-wired and mounted to actuators that tilt the targets up and down for use on three different target lines. Shooters fire from a common covered firing line and fire distances of 200, 300 or 600 yards during open public sessions and matches without moving. Those targets are semi-permanent and fit into frames that are bolted to iron brackets mounted on a concrete deck.
We know some of our readers still don’t own a gun safe, even a small one. We’ll now there’s no excuse. Here’s a killer deal on a Stack-On gun vault at WalMart. This 22-gun safe can’t compare to a large, heavy-gauge $1500+ safe, but it will be worlds better than storing your firearms under the bed or in a closet. Bottom line, your firearms need to be locked up when not in use. Priced at just $344.97 this is a great deal. And the shipping charge is just another $9.99.
Measuring 55″ tall x 26.8″ wide x 17.6″ deep, this Stack-On safe is rated for 22 long guns up to 54″ tall. In reality, you’ll be lucky to fit a 13-14 scoped rifles comfortably in this safe, but that’s enough for many guys. This is also a good “second safe” for your loading room or bedroom.
What does a two-time High Power National Champion choose for PRS comps? A set of twins. Twin rifles that is. SFC Brandon Green of the USAMU is one of America’s best marksmen. He’s excelled in Service Rifle and High Power disciplines, and now he’s getting very serious about the Precision Rifle Series (PRS). Brandon recently took delivery of “Twins” — two impressive rifles optimized for PRS competition. Green told us: “The Twins are ready for business! The silver one is a 6XC and the black one is a 6.5×47 Lapua”. Both rifles feature Impact Precision actions (with AICS-type mags), 24″ Proof stainless barrels, and Fat Bastard muzzle brakes. Rifle work was done by Stuteville Precision (Wade Stuteville) and Exodus Rifles (Joe Walls).
In the 6XC, Brandon runs Berger 105gr VLDs in Norma 6XC brass. For the 6.5×47 Lapua he shoots 140gr Berger Hybrids or 143gr Hornady ELD-Xs in Lapua brass. Both rifles have stainless steel Proof barrels, but the 6.5x47L has a matte black Cerakote finish.
Brandon loves his new Twins. He said he likes the “feel” of the guns with the Foundation stocks: “These rifles weigh around 17 pounds with optics. They feel very solid under recoil — without the ‘tuning fork’ vibration you can get with a metal-chassis gun. They feel like a good wood-stocked gun, but the material is stronger and more rigid than wood. I’ve heard that guys are having success with these Foundation stocks with the actions installed without pillars or conventional bedding.” Currently Brandon is running both guns without action-screw pillars. He did have one skim-bedded, but he doesn’t think that was really needed. “Both rifles hammer now”, Brandon tells us.
Green Runs Vortex Razor HD Gen II 4.5-27x56mm FFP scopes on both rifles:
High-Tech Micarta Stock Material
At first glance, those stocks may look like wood, but they are actually a special “Micarta” material that is strong, durable, and stable. Micarta, often used for knife handles, is a “a brand name for composites of fiberglass, carbon fiber, or other fabric in a thermosetting plastic.” The stock-maker, Foundation Stocks, says Micarta offers some distinct advantages over laminated wood or conventional fiberglass: “The solid block of material gives us a dense, homogenous material that is absent of any voids or air pockets commonly found in composite stocks. The high compression strength of the material allows us to build an action/DBM specific stock that requires no bedding or pillars. The material is very durable and stable in extreme environments. We use advanced CAD software to design and model our stocks, working in conjunction with action manufacturers and rifle builders to provide exact fitment.”
Here is a close-up of a Foundation Stock showing the distinctive Micarta texture:
Tactical Competition vs. NRA High Power Competition
Brandon says PRS competition is tough: “PRS can be pretty humbling, but it’s been a lot of fun and a great challenge. For a shooter (like me) with a Service Rifle/High Power background, the variations in stages combined with the time limits can be very challenging. And the unusual shooting positions put a new spin on things. PRS is definitely a different ball game, but I really enjoy it. After the National Championships this summer I hope to shoot three or four PRS matches in September and October.”
SFC Brandon Green honored as the 2015 High Power National Champion.
Life before the Twins… Here is Brandon, with his previous PRS rig, at the MasterPiece Arms Precision Rifle Shootout, a PRS event at the CORE Shooting Solutions Range in Florida:
We know many of our readers aren’t 100% clear on the difference between a secant ogive bullet and a tangent ogive bullet. Add the “blended” or “hybrid” ogive into the design equation and you add to the confusion. In this article, Berger Ballistician Bryan Litz, explains the characteristics of the three popular ogive types: tangent, secant, and hybrid.
In discussions of ballistics, you’ll see references to “tangent” and “secant” bullet shapes. For many readers, these terms can be confusing. To add to the confusion, bullet makers don’t always identify their projectiles as secant or tangent designs. This article provides a basic explanation of tangent and secant designs, to help you understand the characteristics of both bullet shapes.
Tangent vs. Secant vs. Hybrid
Most match bullets produced today use a tangent ogive profile, but the modern VLD-style bullets employ a secant profile. To further complicate matters, the latest generation of “Hybrid” projectiles from Berger Bullets feature a blended secant + tangent profile to combine the best qualities of both nose shapes. The secant section provides reduced drag, while the tangent section makes the bullet easier to tune, i.e. less sensitive to bullet seating depth position.
Berger Bullets ballistician Bryan Litz explains tangent and secant bullet ogive designs in a glossary section of his Applied Ballistics website, which we reprint below. Bryan then explains how tangent and secant profiles can be combined in a “hybrid” design.
How Bullet Ogive Curves are Defined
While the term “ogive” is often used to describe the particular point on the bullet where the curve reaches full bullet diameter, in fact the “ogive” properly refers to the entire curve of the bullet from the tip to the full-diameter straight section — the shank. Understanding then, that the ogive is a curve, how is that curve described?
LITZ: The ogive of a bullet is usually characterized by the length of its radius. This radius is often given in calibers instead of inches. For example, an 8 ogive 6mm bullet has an ogive that is a segment of a circular arc with a radius of 8*.243 = 1.952”. A .30-caliber bullet with an 8 ogive will be proportionally the same as the 8 ogive 6mm bullet, but the actual radius will be 2.464” for the .30 caliber bullet.
For a given nose length, if an ogive is perfectly tangent, it will have a very specific radius. Any radius longer than that will cause the ogive to be secant. Secant ogives can range from very mild (short radius) to very aggressive (long radius). The drag of a secant ogive is minimized when its radius is twice as long as a tangent ogive radius. In other words, if a tangent ogive has an 8 caliber radius, then the longest practical secant ogive radius is 16 calibers long for a given nose length.”
Ogive Metrics and Rt/R Ratio
LITZ: There is a number that’s used to quantify how secant an ogive is. The metric is known as the Rt/R ratio and it’s the ratio of the tangent ogive radius to the actual ogive radius for a given bullet. In the above example, the 16 caliber ogive would have an Rt/R ratio of 0.5. The number 0.5 is therefore the lowest practical value for the Rt/R ratio, and represents the minimum drag ogive for a given length. An ogive that’s perfectly tangent will have an Rt/R ratio of 1.0. Most ogives are in between an Rt/R of 1.0 and 0.5. The dimensioned drawings at the end of my Applied Ballistics book provide the bullets ogive radius in calibers, as well as the Rt/R ratio. In short, the Rt/R ratio is simply a measure of how secant an ogive is. 1.0 is not secant at all, 0.5 is as secant as it gets.
Hybrid Bullet Design — Best of Both Worlds?
Bryan Litz has developed a number of modern “Hybrid” design bullets for Berger. The objective of Bryan’s design work has been to achieve a very low drag design that is also “not finicky”. Normal (non-hybrid) secant designs, such as the Berger 105gr VLD, deliver very impressive BC values, but the bullets can be sensitive to seating depth. Montana’s Tom Mousel has set world records with the Berger 105gr VLD in his 6mm Dasher, but he tells us “seating depth is critical to the best accuracy”. Tom says a mere .003″ seating depth change “makes a difference”. In an effort to produce more forgiving high-BC bullets, Bryan Litz developed the hybrid tangent/secant bullet shape.
Bryan Litz Explains Hybrid Design and Optimal Hybrid Seating Depths
We know many of our readers aren’t 100% clear on the difference between a secant ogive bullet and a tangent ogive bullet. Add the “blended” or “hybrid” ogive into the design equation and you add to the confusion. In this article, Berger Ballistician Bryan Litz, explains the characteristics of the three popular ogive types: tangent, secant, and hybrid.
Hybrid Bullet Design — Best of Both Worlds?
