Here’s the super-speedy way to turn case-necks. Our friend Erik Cortina figured out how to turn his match cartridge case-necks using his milling machine. Erik told us: “While in Raton, Mid Tompkins told me that he turns his brass on milling machine. He said he could do about 500 in two hours, so I decided to try it.”
Erik fitted a Don Nielson “Pumpkin” neck-turner to the mill, and he used a modified 21st Century case holder to secure the brass. As you can see from this video, Erik was very successful with the process. The tool spins at 1500 rpm, turning Lapua 6.5-284 cases that have been necked up to 7mm.
Video Shows Erik Cortina Neck-Turning Cases with Milling Machine:
Cartridge Brass: Lapua 6.5-284 necked up to 7mm
Lubricant: Lithium grease inside and outside of neck
Neck-Turner: Nielson Pumpkin running at 1500 RPM
It’s hard to argue with Erik’s results. Here are his turned Lapua cases, which have neck-wall thickness consistent to two ten-thousandths of an inch. Think you could do better turning manually?
Some of Erik’s Facebook friends had questions about this process:
Q: Who makes the shell-holder?
Erik Cortina: I did! The shell-holder you can get from 21st Century. I Tig-welded a punch as a handle.
Q: I love the idea of working smarter not harder! Any galling issues? What are your mitigation techniques?
Erik Cortina: No issues. I use lithium grease in spray can. Makes a foam that I dip necks into.
Q: Shouldn’t either the case or the cutter be floating to allow most precise neck turning?
Erik Cortina: Up until [I tried this] I believed the same thing. I was going to build a floating case holder but decided to try rigid setup on a few cases before I built it. Results were great. Neck thickness doesn’t vary more than .0002″, which is same as when I was doing it with floating case holder on the lathe.
Q: Any problems with the Pumpkin changing the cut as it heats up?
Erik Cortina: No — there were no issues with that.
NOTE: Erik Cortina is a very skilled machinist who custom-crafted fittings used for this process. This kind of neck-turning with a milling machine may not be for the everyday hand-loader!
Nielson “Pumpkin” Neck-Turner
The circular orange cutting fixture on Erik’s Milling Machine is a Don Nielson “Pumpkin” neck-turning tool. Don designed this tool to be used by hand or with power. The Pumpkin boasts an eccentric mandrel that allows the cut to be adjusted easily in precise .0001″ increments. Benchresters like this as it allows for very precise control of cut depth and neck-wall thickness.
Jason C., commenting on Erik’s YouTube video stated: “I have a couple of those too. Nothing cuts like a Pumpkin. [Don Nielson] made the best cutter tool ever.” These are still available if you ask around. The photo shows Don with a case-holder mounted to a power assembly. A talented machinist and tool-maker, Don has also been a successful short- and long-range benchrest shooter, who has won NBRSA 600-Yard Championships. CLICK HERE to read about Don’s success with the 6.5×47 Lapua.
Nielson Neck Turner with carbide mandrel. Photo Courtesy Butch’s Reloading.
You can benefit from these precision mandrels, trust us…
Controlling cartridge neck tension is a critical aspect of accurate reloading. A very small change in the amount of grip on the bullet can actually have a noticeable effect on accuracy (and group size). You can tune neck tension with different size bushings used with FL-sizing or neck-sizing dies. You can also adjust neck “grip” by annealing your brass, or turning your necks for reduced neck-wall thickness.
But perhaps the most precise way to tune neck grip on the bullet is to use Precision Expander Mandrels. Many top shooters size their case necks down pretty far with a full-length sizing die then use a precision neck mandrel as a final step. This expands the neck back to the precisely-desired neck diameter. Because you are working from the “inside out”, variances in neck-wall thickness become less important. This also ensures you have a perfectly-round internal neck geometry for seating your bullet. (Yes, unfortunately some neck bushings are not perfectly round inside.)
For guys who want ultra-precise control over neck tension (and “grip” on the bullet), 21st Century Shooting now offers Precision Expander Mandrels in .0005 (one-half thousandth) increments. These will be available for most popular match calibers including: .224, 6mm, .25, 6.5mm, .270, 7mm, .308, and .338 calibers. These mandrels cost $17.99 each, or you can get a complete set of nine mandrels in .0005 increments (for one caliber) for $144.99. Listed below are the nine 6mm mandrels:
John Perkins, owner of 21st Century tells us: “Finally! We have our expander mandrels up and ready to order on our website here: http://www.xxicsi.com/expander-mandrels.html.” This is a big deal. James Crofts, past National F-TR Champion, says “WooHoo — great news!”
To get best results with these precision mandrels, John recommends using the 21st Century Expander Die Body, part #904. Watch video for set-up tips:
John adds: “We are still in the midst of turning all of these so some calibers will ship when they are completed. Should have them all done by end of next week or so! Thanks for your patience while we got these set up and in process!”
A carpet is used up front for smoother tracking with the Joy-Pod’s flat, ski-style feet. The arms of the Joy-Pod were painted to match the stock. The rear bag features low-drag material on the ears.
On Sundays, we feature notable rifles that exhibit fine craftsmanship, quality components, and noteworthy shooting accessories. Today we are featuring an F-TR (F-Class Target Rifle) rig that showcases the types of components, and accessories used by top F-TR competitors — including a coaxial bipod and Labradar Chronograph. If you’re considering getting started in the F-TR game, take a close look at this modern F-TR build from Forum member DM.Oakes.
Modern F-TR Rig with Borden Action, Krieger Barrel, and SEB Joy-Pod
This handsome .308 Win F-TR rig features a smooth-running Borden BRM action, 30-inch 1:10″-twist Krieger barrel, and an X-Ring Laminated Wood stock. Up front is a coaxial “Joy-Pod” joystick bipod. This is a state-of-the art, wide footprint bipod used by many competitors at the Worlds in Canada. The long joystick allows the “driver” to quickly adjust both elevation and windage in a smooth, continuous motion. The Joy-Pod can be adjusted so it will hold setting during the shot — you don’t have to “hard-hold” the joystick. Many shooters let the joystick slide through their fingers as the rifle moves back on recoil. With a little practice (and careful placement of the rear sand-bag), the tracking is excellent and you can slide the gun right back to point of aim after each shot.
This F-TR rifle is shown during load testing with a LabRadar chronograph.
» Full LabRadar Field Test/Review by Ray Gross
If you are considering purchasing a LabRadar Chronograph system, we strongly suggest you read the very thorough and informative LabRadar Review by Ray Gross, past Captain of the USA F-TR team. Ray notes: “It takes me about 3 minutes to set up [my LabRadar] at the range. Because there are no downrange screens, I do not have to hold up other shooters on the range like I would when setting up a traditional chronograph. The convenience alone will mean that I will use it more often than my old chronograph. Every time I take it out, I enjoy it a little bit more.”
We know our readers like accurate rifles — the more accurate the better. You guys also love really great craftsmanship and state-of-the art componentry. To satisfy that lust for amazing, accurate rifles, we’re starting a new feature — Sunday GunDay. We’ll try to do this a couple Sundays a month, provided we have some great candidates. For our first Sunday GunDay feature, we are presenting a stunning .284 Win F-Open match rifle owned by David Christian of Team Borden/Brux/Lapua. This impressive rig is as good as it gets in the F-Open game. The write-up is by David’s friend, Forum member F-Class John.
Tips For Competitors from David Christian
1. Tracking is Really Important. I learned this lesson from Bill Brown. Make sure your rifle is tracking exactly on your bags. If you slide the gun back and forth and it does not line up on your original aim point, something is out of alignment with you rear bag or mat and needs to be adjusted.
2. Wind Calls — Be Brave. Don’t be timid with your wind calls. It is better to err with a slight over-correction, rather than miss a change entirely.
3. More Data is Good. Keep track of as much data as you can so that you can learn from it. For example I shoot as much as I can with my chrono and track my load speeds so that I can tell if I am drifting out of my node.
David Christian’s .284 Win F-Open Rig
Report by F-Class John
Here’s match rifle that’s as handsome as it is effective (and accurate!). In its first-ever tournament, this impressive rig took 8th place overall in F-Open at the 2019 Berger Southwest Nationals. This .284 Win hammer was wielded by David Christian, the newest member of Team Borden/Brux/Lapua. David built this .284 Winchester around a Borden BRMXD action with black PVD coating and a Jewell BR trigger. What I found fascinating is that David had built all of this before ever being approached for the team. When I asked him how that worked out, he simply said he picked the components he liked the best and knew would do the job. It was just the universe in action that he’s now on the team that matches his gear and he’s certainly not complaining that he gets to represent them now.
David uses a custom-contour 32″-long Brux 1:8.5″-twist barrel that tapers from 1.35” to 1.25” because he likes the extra stability and weight it brings. It’s all mounted in an amazingly-crafted Cerus Stock (Speedy Gonzales “Spear of Destiny” design). While Will McCloskey built the stock, it was finished to perfection by Devin Wiggett and mounted by Terry Wright of Right Rifle in Oregon. You might also notice that the buttstock features a R.A.D. recoil system which adds the final touch to the system.
Stunning Laminated Maple/Cherry/Walnut/Wenge Cerus Stock
When asked what people comment on when they see his gun, David says it’s the stock, hands down. Having handled this gun myself, I have to agree and believe me when I say the pictures don’t do it justice. The exterior forearms are torrified Maple while the core is made up of Brazilian Cherry, Walnut, and African Wenge wood. It makes for an ultra-strong stock with stunning beauty to match.
David currently tops this beauty with a Kahles K1050 10-50x56mm scope featuring the MOAK reticle. David really likes the 20 MOA per revolution dial as well as the top-mounted parallax adjustment. This is especially helpful for him as David shoots left-handed. Most scopes have a left-side parallax knob which is difficult for him to use during a match.
You can’t have a rifle this good-looking and functional without riding on the right gear. David uses a Protektor DR Bag and a SEB Special Edition NEO coaxial front rest. All told it took nearly six months to get all the parts delivered and assembled but he looks at that as a short term loss and a long term gain. Using Erik Cortina’s load development methods with Berger 180gr Hybrid Target or 184gr Hybrid Target bullets and quality Lapua brass, David has achieved some amazing results. Here’s a representative target from a recent match. That’s mighty fine shooting!
If you want to “hit the ground running” in the F-Open game, this wouldn’t be bad setup to emulate and if you see David at a match, he’s always more than happy to talk to you about it.
A 7mm Snake for Santiago
Our friend Dennis Santiago has a reptilian rig in his arsenal. It’s actually an Eliseo R1 single-shot tubegun chambered in .284 Winchester. The eye-catching aspect of Santiago’s .284 bolt-gun is the snakeskin dip job on the exterior. This really creates a distinctive look. Dennis tells us: “It was Gary Eliseo’s idea to try a water-transfer printing finish for this rifle. There are many patterns to choose from — this is the WTP-260 Snakeskin Illusion-Fall Copper from WaterTransferPrinting.com. For a single shot LR gun, I figured something on the bright side would be interesting and pick up less heat from the sun in the summer.”
Dennis uses this eye-catching rifle in prone matches, where a single shot works fine. He says: “Underneath the hood, it’s a Rem 700 Long Action, chambered in .284 Win. Yes it’s a single shot! I don’t need anything else for a prone gun. Nothing to get in the way of building the perfect position.”
Dennis says: “Length of pull, offset and cast initially set the same as my similar RTS .308. My gun, my body dimensions.”
R1 Testing with Advanced Electronic Shot-Plotting System
Now that winter is here, Dennis plans to do some serious load development with this rifle: “I acquired a new ShotMarker electronic target system. I’ll be using that to test a variety of powders and bullets.” Dennis has previously loaded his .284 Win R1 with Hodgdon H4831 powder, but he hopes to test alternatives from Alliant and IMR as well. There are many interesting 7mm bullet options, such as Sierra’s impressive, factory-pointed 183gr MatchKing with 0.707 G1 BC, and Berger’s new 184gr F-Open Target Hybrid with 0.695 G1 BC.
The ShotMarker is a unique 8-sensor acoustic electronic target that instantly plots shot locations and transmits the data via WiFi to a mobile device. Dennis is eager to try his new Shot-Marker. The system can measure group size, velocity, and SD. The Shot-Marker App can then store your strings for later review, add notes to the target, and export data to spreadsheets.
A FFP 6-24x50mm Sightron Rides on Top
The optic is a Sightron 6-24x50mm, FFP MOA-2. Dennis reports: “I looked at many scopes (within my determined price range), and this is the one that had the best combination of features for for this gun’s particular application. The sight line sits about 3 inches above bore line on these guns. It’s been leveled, bore-sighted and pre-dialed for a 200-yard estimated zero for the ammo I plan to use. Those are Gen II A.R.M.S. rings. Super easy to tailor to different rail widths. Same rock-steady steel performance.”
Do You Like H4350? Then You Should Try Reloder 16 — It Is Accurate and Temp Stable
Alliant Reloder 16 is used now by many top shooters for cartridges that work well with Hodgdon H4350. In fact, we’d say that Reloder 16 is the best substitute for H4350 on the market. Alliant’s RL 16 is very temp stable, offers good velocity, and the accuracy is top tier. Some guys report slightly better accuracy than H4350 in the .284 Win, .260 Rem, 6.5 Creedmoor, 6mm Creedmoor, and 6XC cartridges. If you currently use H4350, you should definitely give Alliant Reloder 16 a try. The powder also boasts excellent lot-to-lot consistency and contains a proprietary de-coppering additive.
This is NOT just a slower version of Alliant’s double-based Reloder 15 (which words great in the 6mmBR and Dasher cartridges). Reloder 16 is a completely new formulation, produced in Sweden by Bofors for Alliant. Reloder 16 utilizes TZ technology, which manipulates the response of the propellant and resists the natural tendency to generate more pressure at higher temperatures and less pressure at lower temperatures. As a result, Alliant’s Reloder 16 offers truly outstanding temperature stability.
Match and Hunting Cartridge Applications:
Alliant tells us that Reloder 16 “is ideal for traditional hunting cartridges, such as .30-06 Springfield and .270 Winchester, as well as 6.5mm target loads and tactical applications wherein temperature stability is required.” We also think the powder will work well in these popular match cartridges: 6XC, 6mm Creedmoor, .243 Win, 6.5×47 Lapua, 6.5 Creedmoor, .260 Rem, .284 Win, and .300 WSM. For example, Alliant’s Reloder 16 Load Data Page shows a 2932 FPS load with Berger 130 grain Hybrid bullet in the 6.5 Creedmoor.
Alliant Reloder 16 Load DATA for 6.5 Creedmoor:
Alliant Reloder 16 Load DATA for .243 Winchester:
NOTE: This is a partial .243 Win Data set. More loads available HERE.
There is a new, ultra-high performance 7mm projectile for F-Open and long-range competitors. Berger has introduced a new 184gr F-Open Hybrid Target bullet, which will be the official 7mm bullet of the U.S. F-Open Rifle Team. The new 184-grainer is an advancement over previous 7mm match bullets. As you can see above, the new bullet is longer and sleeker than Berger’s existing 180gr Hybrid Target bullet. The new design gives the 184gr F-Open Hybrid impressive 0.695 G1 and 0.356 G7 Ballistic Coefficients. Compare that to 0.680 G1 and 0.349 G7 for Berger’s 180gr Target Hybrid bullet.
Bryan Litz of Applied Ballistics designed the new 184gr F-Open Hybrid to be slightly heavier, slightly longer, and have a more aggressive ogive shape. This gives the new 184-grainer a ballistic advantage over Berger’s existing 7mm 180gr Hybrid and VLD Target bullet designs. This bullet complements the .30 Cal 200.20X Hybrid Target bullet that was released last year in collaboration with the U.S. F-TR Rifle Team. As with that 200.20X bullet, for the new 184gr F-Open Hybrid, Berger took a successful, existing design and optimized the ballistic profile to make it even better. Along with .284 Win and 7mm SAUM used by F-Open shooters, this bullet should work well in a variety of 7mm cartridges.
New 184gr Hybrid Bullet Tested Extensively by U.S. F-Open Rifle Team
The U.S. F-Open Rifle Team tested the 184gr F-Open Hybrids thoroughly to ensure that they performed as well on target as they did in theory. The results were very positive, and this bullet has been adopted as the official 7mm bullet for the U.S. F-Open team. “The United States Rifle Team 2021 F-Open is extremely excited about the release of the new Berger 184gr F-Open Hybrid. Many members have tested the prototype bullets with outstanding success,” says Dan Bramley, Team Captain.
Note: On the Berger website, Berger lists a recommended 1:8″-twist rate for this new bullet. However, in its June 25, 2018 product announcement, Berger states the Minimum Twist Rate is 1:9″. MSRP is $61.99 per 100-ct box, Berger Part #28408. Grafs.com price is $54.99/box.
Berger says the bullet, which should be available very soon, will work in a variety of 7mm cartridges including: 7mm-08 Rem, .284 Win (and .284 IMP), 7mm SAUM, 7mm RUM, and 7mm Rem Mag.
Berger Supports U.S. F-Open Team — $1.00 Per Box
Berger states: “F-Class is one of the fastest growing precision rifle shooting disciplines, requiring the very best precision and accuracy to compete at the top levels. Berger has always been dedicated to making the very best bullets for our shooters. To help support the U.S. F-Open Team, Berger Bullets will donate $1.00 for every box of 7mm 184gr F-Open Hybrid bullets sold towards U.S. Team expenses for the upcoming 2021 F-Class World Championships in South Africa.”
Here is beautiful F-Open rig crafted by Forum member CigarCop of KW Precision LLC. It features a laminated wood stock with stunning figured walnut on the outside.
One of the most popular items in our Shooters’ Forum is the ongoing “Pride and Joy” thread. Since 2009, Forum members have posted photos and descriptions of their most prized rifles. Here are some of the most recent “Pride and Joy” rifles showcased in our Forum. Do you have a gun you’d like to see featured there? Just Register for the Forum and you can add your favorite gun to the list.
New 600/1000 Benchrest Light Gun for Richard Schatz in 6 BRA
This blue benchrest rig was crafted by Alex Wheeler for ace benchrest competitor Richard Schatz, a past 600-yard IBS Shooter of the Year. Richard’s new 600/1000-yard Light Gun features a Krieger barrel chambered in 6 BRA (40° Ackley version of 6mmBR Norma). That Krieger is mated to a 1.550″ BAT B action, ignition-timed for smooth bolt close and increased accuracy. The trigger is the sophisticated Bix’n Andy. Schatz’s BAT is glued and screwed into a Wheeler LRB stock, with aluminum rails and adjustable metal “tracking rudder” on the toe of the stock. The rudder can be adjusted side to side to ensure optimal tracking, while the rudder’s vertical angle can be adjusted slightly with shims.
Hand-Crafted Thumbhole-Stocked Rifle Chambered in 6 PPC
Forum Member Grimstod offered this handsome 6 PPC custom with a beautiful, hand-made thumbhole stock: “This was fully accurized with Premier Accuracy recoil lug installed. Really makes these shoot a lot better. It features a Kelbly Panda action with Hart barrel and glass bedding. Trigger fall was perfect to start and we have to give Ian Kelbly big thumbs up for making every action perfectly timed.” On top is a March competition scope. See more photos at www.premieraccuracy.com.
A Wicked Accurate Big Dawg in 28 Nosler
This 28 Nosler Benchrest rifle looks good and shoots even better — check out that 20-shot target shot at 200 yards! You can’t argue with that…
Belonging to Forum member LA50Shooter, this rig is chambered in 28 Nosler, with metal work by Gre-Tan Rifles. The action is a BAT Model “L” 1.650 Octagon with a 30 MOA scope rail, running a Jewell BR Trigger. The stock, from D&B Supply, is a Shehane Big Dawg Tracker with 5″ fore-end. Color scheme is “Field & Stream” Rutland laminate. This big rig boasts FOUR 34″ Benchmark barrels (1.5″ for seven inches tapering to 1.225″ at muzzle).
A Pair of Score Benchrest Beauties
Forum member JimPag showcased two new Benchrest-for-Score rifles. The rig on the left, smithed by Dwight Scott, features a Farley Black Widow RBLPRE (with Bix’n Andy trigger). It features Pistachio and Carbon Terry Leonard stock glued and screwed by Sid Goodling. The barrel is a Krieger 23.5″ chambered in 30BR with a Mike Ezell tuner. It’s topped with a Goodling-built 1-piece Davidson base and a Nightforce 42X Comp scope. The rifle on the right, smithed by Sid Goodling, features a Marsh Saguaro RBLPRE Action with Bix’n Andy trigger, and March 36-55X scope. This rifle boasts a rare Screwbean Mesquite and carbon stock by Terry Leonard. The 23″ Lilja bbl is chambered in 30 Thrasher with a Goodling tuner. (30 Thrasher is longer 30 BR case developed by Joe Entrekin). Jim also has two other barrels for this action in 30 BR and 6 BRAI. On top is a Sid Goodling-built one-piece Davidson base with a March 36-55X scope.
Rem 700 in Manners Stock — .284 Winchester for Hunting
Here’s a Rem 700 enhanced with a Manners Elite TA stock and other upgrades. Forum Member NickB1075 says: “Here is a rifle I finished for hunting this year. It’s a bit heavy for New York woods carry but it just shoots great. Maybe I will have to get one of those fancy Proof Research barrels to lighten it up a bit.” Nick is running a Benchmark 1:8.5″-twist barrel chambered in .284 Win with 0.315 neck for shooting 150gr Barnes bullets. Nick added a Jewell trigger and on top is a U.S. Optics B10 Scope.
When Only the Biggest and Boldest Will Do — .50 BMG
No “Pride and Joy” feature would be complete without a Big Boomer. This impressive .50 BMG, “61 inches of big bore goodness”, weighs a whopping 49 pounds (95 lbs. complete with case and accessories). This rifle’s proud owner, forum member 6MT, says everything on this black beast is jumbo-sized: “Yes, I can stick my finger clear through the ports in the muzzle brake!” The rifle boasts a U.S. Ordnance 31″ heavy-contour barrel fitted to Barnard GP action. The stock is a “Big Mac” from McMillan. No optics yet — 6MT says he is “looking at an ATACR 7-35x56mm with a Spuhr mount… As soon as my wallet recovers!”
Emil Kovan is one of the top F-Class shooters in the world. He won the 2014 United States F-Open Championship. Earlier this month Emil finished second in F-Open Division at the 2016 Canadian National F-Class Championship in Ontario. Emil actually tied Open-class winner Shiraz Balolia for overall score AND “V”-count, but Emil was awarded second on the tie-breaker.
“What are the best components for an F-Open class rifle, and why?” That’s a question that I get asked all the time and will try to answer in this article. Two months ago, I was contacted by Duane, a gentleman I met at the 2015 F-Class Nationals. He was interested in building a rifle with the new Master Class Low Profile F-Open Stock, created by Carl Bernosky and Alex Sitman of Master Class Stocks.
I have known Alex Sitman for many years, and use his stocks exclusively, but was not very familiar with his new Low Profile F-Open stock. After a brief conversation with Alex, I placed an order, and had the stock inletted and bedded at my shop in a month. My first impression was “Wow that’s a long stock” — the forearm is significantly longer than on the original Master Class F-Class prone stock. I bolted the barreled action in, and squeezed the end of the forearm and barrel together, the stock flexed a little bit, but not as much as other designs that I have tested. I think that’s due to having “more meat” in the receiver area. The full stock depth continues farther forward that on some other “low profile” designs. That makes the stock stiffer in the vertical plane, reducing the hinging effect forward of the action. The stock was finished in gloss black per the customer’s request. Interestingly, I found that the multiple layers of paint and clearcoat stiffened the stock up quite a bit.
CLICK IMAGE below for full-screen version
Low Center of Gravity Tames Torque
Compared to the original Master Class F-Open stock, the barrel sits about an inch lower. Lower center of gravity equals less torque, and that is very important when shooting heavy bullets in fast twist barrels. Another significant improvement is that the toe of the stock is flat and parallel to the forearm. I added a 3/4″ track rail in the rear, and milled the underside of the fore-end to create two parallel “rails” in the front to help the stock track better.
One of the biggest reasons why I like Master Class stocks, is the pistol grip. I don’t shoot “free recoil” and a comfortable pistol grip is super important to me when selecting a stock. The new Master Class Low Profile stock shares the same grip as the old model. This allows the stock to accommodate either a “hard hold” style or a more free-recoil style of shooting — whatever the rifle’s owner prefers. This design versatility is one reason I recommend Master Class stocks. Shooters may experiment with either shooting style to find what suits them best.
Cartridge Choice — A 40° .284 Win Improved
Duane decided to have the barrel chambered for my 284 KMR IMP (Improved) wildcat. What is .284 KMR IMP and why choose it over the straight .284 Winchester? Improved by definition means “made better”, I took a great cartridge, and modified it to increase capacity, reduce pressure, and increase brass life.
There are many “improved” variants of the original .284 Winchester: 7mm Walker, .284 Shehane, .284 Ackley and so on. My version, the 284 KMR IMP, shares the .010″ blown-out sidewalls of the .284 Shehane, but I have further increased the case capacity by changing the shoulder angle from 35 to 40 degrees. The 284 KMR IMP allows you to almost match magnum cartridge velocity in a standard-bolt-face action. If you want to run 180gr-class 7mm bullets over 2900 FPS, it is cheaper and more convenient to have a barrel chambered in 284 KMR IMP than to spend $650 for a magnum bolt.
Tuning Loads for the .284 Win Improved Cartridges
The 284 KMR IMP seems to have two nodes, one around 2820 fps and other at 2940 fps. My match load clocks at 2935 fps with single-digit ES. Note –I selected that load based on accuracy, NOT raw speed. A lot of novice (or hard-headed) shooters make the mistake to push their cartridges to the max, and disregard more accurate loads at lower velocity.
The sport of F-Class is rapidly growing, and the equipment used is improving constantly. I remember that only few years ago, an F-Open rifle that could shoot sub-one-inch of vertical at 300 yards was considered competitive. Now, we are pursuing sub-one-inch vertical at 600 yards! It takes a great rifle to approach that goal, but it is also up to the shooter to learn and experiment as much as possible in order to achieve success.
Dies for an Improved .284 Win Cartridge
One of the biggest challenges in campaigning a wildcat cartridge has been obtaining great dies. When searching for custom dies, it almost seems like that the odds are stacked against us. The most common problem is wait-time — custom die orders can take months to be completed. Also, most custom die makers want you to send them two or three cases, each fire-formed three times. I find that funny because if could somehow properly size the cases for three fire-forming cycles, I would not need a sizing die.
Custom-made dies should size the case just right, but sometimes the die’s internal dimensions are slightly off, and this leads to problem number two: dies sizing too much (or even worse) too little. I had a one “custom” die that would not size the bottom of the case enough. This made the extraction of fired cases very difficult. I feel that the best option (if available) for shooters interested in wildcat chambers is to have their gunsmiths make the dies. I offer that die-making service in addition to barrel chambering.
BAT Machine “M” Action
Duane decided to use a BAT M action for this rifle, and I think that he could not have made a better choice. We are blessed with many good match-quality receivers: Barnard, BAT, Borden, Kelbly, Nesika, and Stiller just to mention a few. These are all very well-made and suitable for F-Class. Among BAT Machine Co.actions, I like BAT models M, MB, and 3LL best. I prefer these because because of their size (large bedding footprint) smoothness, timing, options available, and last but not least visual appearance.
Trigger: I recommend and use Jewell triggers. Other good options are: Kelbly, CG Jackson (good 2-Stage) Anschutz (best 2-Stage for Bat and Kelbly actions), Bix’N Andy, and David Tubb.
Barrel: Duane made another good choice here. He decided to go with a Brux 1:8.5″-twist, 4-groove cut-rifled barrel. If you look at the F-Class and Long Range benchrest equipment lists, you will see that cut-rifled barrels are currently dominating. Many records have been shot with both button-rifled, and cut-rifled barrels. I have shot both, and prefer cut-rifled barrels. I am not saying that button-rifled barrels are not capable of shooting as well as cut-rifled barrels, but on average, in my experience, four out of five cut-rifled barrels (from top makers) will shoot well, vs. three out of five buttoned barrels. YMMV, but this is what I’ve observed.
Scope: Duane’s rifle was fitted with a Nightforce 15-55x52mm Competition scope with DDR-2 reticle. This optic is ultra clear, reasonably lightweight (28 oz.), super reliable, and has 1/8 MOA clicks — what you want for long range F-Class competition. In this 15-55X NF model, I like the DDR-2 reticle best, because fine cross hairs (FCH) are hard to see in heavy mirage. The DDR-2 has a heavier horizontal line, with a center dot. March scopes are also very popular and very well-made.
Thanks for reading, and keep ‘em in the middle…
Emil Kovan Competition History:
– 2014 F-Class Open National Champion
– 2016 F-Class Open Canadian Championship, Silver Medal (tied for first on score)
– 2015 F-Class Open National Championship, Silver Medal
– F-Class Open National Championship Teams, 2015, 2014, 2013, Shooting Team Member
– Over 15 wins in Regional and State Championships in Palma, F-TR, F-Open
“A big congratulations to Bob Mead (1582-68X), who utterly destroyed the competition in tricky wind conditions to take the Gold.” — Jay Christopherson, F-Open Second Place.
The 2017 F-Class National Championships in Lodi, Wisconsin are now history. Hail the new Champions: Robert Mead, F-Open (1582-68X) and Ian Klemm, F-TR (1557-56X). Hosted by the Winnequah Gun Club, the Nationals drew about 75 F-Open shooters and 45 F-TR competitors, down from last year. In F-Open, Robert Mead shot brilliantly in tough conditions to finish 14 points ahead of his closest competitor, AccurateShooter.com’s System Administrator Jay Christopherson. Erik Cortina was just one point behind Jay, but Erik had the high X-Count for the match at 71X.
Photos of Robert Mead and Ian Klemm courtesy Erik Cortina.
In F-TR, Ian Klemm also won by a margin of 14 points. This was an impressive win by Ian, given the challenging winds and weather. F-TR runner-up Todd Sanders also shot remarkably well, considering he is a relative newcomer to F-Class. Forum member KyBountyHunter observed: “Outstanding shooting this week gentlemen, in some of the most challenging conditions that I’ve seen. Congrats to all the winners. Ian — fantastic job taking First Place (well deserved) [and] special congrats to Todd. For this only being his second year in F-TR, he’s going to be force to be reckoned with for a long time!”.
Final Results for F-Open (TOP 10):
1. Robert Mead: 1582-68X HM
2. Jay Christopherson: 1568-59X HM
3. Erik Cortina: 1567-71X HM
4. John Myers: 1558-64X HM
5. Pat Scully: 1558-50X HM
6. Larry Bartholome: 1554-55X HM
7. Robert Sebold: 1554-41X HM
8. Steve Harp: 1553-58X HM
9. Jeff Hopkins: 1551-49X MA
10. Lou Murdica: 1550-46X MA
Final Results for F-T/R (TOP 10):
1. Ian Klemm: 1557-56X HM
2. Todd Sanders: 1543-43X MA
3. Brad Sauve: 1542-44X MA
4. Laura Perry: 1539-46X EX
5. Daniel Pohlabel: 1534-49X MA
6. Josh Moore: 1529-37X EX
7. Ken Klemm: 1528-38X MA
8. Bob Lorenz: 1525-47X EX
9. Raymond Weaver: 1522-36X HM
10. Alan Barnhart: 1521-31X HM
Strong Performances by Members of Team Lapua-Borden-Brux
Jay Christopherson posted: “A big congratulations to Bob Mead (1582-68X), who utterly destroyed the competition in tricky wind conditions to take the Gold. This was a great end to the 2017 competition season for me as I managed to hang on by the skin of my fingertips to win Silver at the 2017 F-Class US National Championships (F-Open).” For the record, Team Lapua-Borden-Brux ended up with all five present members of the team in the Top 8 of the Grand Aggregate.
Jay Christopherson (2nd, 1568-59X, Silver)
Erik Cortina (3rd, 1567-71X, Bronze)
Pat Scully (5th, 1558-50X)
Bob Sebold (7th, 1554-41X)
Steve Harp (8th, 1553-58X)
In team competition, Team Lapua-Borden Brux won the F-0pen Long Range Championship as well as the Mid-Range Championship. Jay told us: “That was some outstanding shooting by great team members. I’m really looking forward to the 2018 season.” Erik Cortina added: “So proud of our team. We conquered the 2017 LR National Championship as well as the Mid-Range National Championship. We could not have done it without our sponsors: Lapua, Borden Actions, and Brux Barrels.”
In the F-TR Team Competition, mighty Team Sinclair triumphed yet again, winning its 10th Long Range National Championship. Team member Paul Phillips offered this interesting factoid: “This year we won with the original four members we had in 2004 plus Dan Pohlabel. It’s pretty awesome to be shooting with the same guys for 13 years! What a great run since 2004.” And those same four also all hail from Midland, Michigan (Midland County Sportsman’s Club). Team Sinclair still holds the 4-man Team 1000-yard National Record. Shown below, L to R, are team members: Daniel J. Pohlabel, Paul Phillips, Raymond Gross (Coach), Brad Sauve, and John Droelle.
All Team Sinclair members use identical hardware: McMillan XiT stock, Kelbly Panda action, Bartlein barrel, Nightforce scope, and Phoenix Precision bipod. All shoot Berger 200-20X bullets in Lapua brass.
The One that Got Away — Almost Matching F-Open 20-Shot Record
Erik Cortina shot a superb 200-16X during the competition (see electronic target scoring screen below). That was just one X shy of the current 200-17X National Record. Erik observed: “So close, yet so far. Almost matched the National Record of 200-17X but shot a ten on my very last shot. Everything felt good but luck was not on my side.”
The circular orange cutting fixture on Erik’s Milling Machine is a Don Nielson “Pumpkin” neck-turning tool. Don designed this tool to be used by hand or with power. The Pumpkin boasts an eccentric mandrel that allows the cut to be adjusted easily in precise .0001″ increments. Benchresters like this as it allows for very precise control of cut depth and neck-wall thickness. 
A 7mm Snake for Santiago
Note: On the 
Emil Kovan Competition History:
