The GAP Grind is a hugely popular tactical match held annually at the K&M Precision Rifle Training facility in Florida. Sponsored by G.A. Precision and Bushnell, the GAP Grind attracts top tactical shooters from around the country. Held 29 – 31 August, the 2014 GAP Grind saw 164 shooters and 82 teams battle it out. Watch the video from the 2013 Grind to see what all the fuss is about….
Watch GAP Grind 2013 Video
GAP Grind Guns by Giddings
Shelley Giddings, a skilled shooter of both firearms and cameras, attended the 2014 GAP Grind last week. While there, Shelley snapped some cool images of state-of-the-art tactical rifles. Here is a Giddings Gallery of Grind Guns. You can find more GAP Grind pix on Shelly’s Facebook Page.
Click any photo below to see a full-screen version.
On our main AccurateShooter.com site, you’ll find an excellent article by GS Arizona on the Basics of Neck Turning. If you’re new to the neck-turning game, or are just looking for good tips on improving your neck-turning procedures, you should read that article. Below we offer some highlights and photos from the article, but you’ll need to read the whole story to view all the illustrations and follow all the procedures step by step.
Why Should You Consider Neck Turning?
Let’s assume that your rifle doesn’t have a tight neck chamber that requires neck turning; if you have a tight neck chamber, of course, the answer to the question is “because you have to”. For the rest of us, and that includes the vast majority of Highpower shooters, neck turning isn’t a requirement, but it can be a useful way to bring your ammunition a small but meaningful step closer to that pot of gold at the end of the rainbow: perfection. I’m not talking about a theoretical improvement, but a real one, an improvement that lies in equalizing and optimizing the neck tension of your loaded rounds. Inconsistent neck tension is a real contributor to increased muzzle velocity variance which itself is a significant factor in increased elevation dispersion at long range. So there’s our basic reason for neck turning: to equalize and optimize neck tension in order to reduce elevation dispersion.
The Tools of the Trade
Here you see everything I use and a bit more. The press, a cordless screwdriver (always plugged in, turning is tough on the old battery), a couple of K&M neck turners (one set up for 6mm, the other for .30 caliber) an expander for each size, some Imperial lube, an old toothbrush or two to keep the cutter clean, a handle with a caseholder (for those emergencies when the screwdriver dies and there’s just one more case to go!), steel wool and a tubing micrometer finish the list of tools. Hey, I left the dial calipers out of the picture! They’re always handy, keep them around, but they are useless for measuring neck thickness, so don’t try. I usually use an Optivisor magnifier while I turn necks, very handy for a clear view of what’s happening on the neck.
Expanding the Neck
Put some lube on the inside of the case neck and run it into the expander. Really, this isn’t hard. I prefer to expand each case immediately before turning it as opposed to expanding all the cases and then turning them. Brass is somewhat springy and will tend to go back toward its original size; therefore, by expanding and turning immediately, you are more likely to have all cases fit the mandrel with the same degree of tightness and to get a more consistent depth of cut.
Cutter Adjustment for Cut Depth and Length
All the tools I’ve seen have pretty good adjustment instructions. The only thing they don’t tell you is that you should have five to ten spare cases to get it right initially. Anything of the right diameter will do while you learn, for instance, just use that cheap surplus .308 brass to do initial setup and save the precious .30-06 for when you know what you’re doing. Be patient and make your adjustments slowly; you’ll need to set the cutter for thickness as well as length of cut (just into the shoulder). The depth of cut (brass thickness) takes a bit of fiddling, the length of the cut is generally easy to set.
The Finished Product — A Perfectly Uniform Neck
If you read the whole article, and follow the procedures using quality tools, you should get very good results — with a little practice. To demonstrate, here’s an example of my finished, neck-turned brass. You’ll see there is a perfect, 0.0125″ thick neck. It’s very uniform around the circumference, usually I only see 1 or 2 ten-thousandths variance. Now, with the necks uniformed like this, we can select the bushing size that will give us our preferred neck tension and experiment with various levels of tension, secure in the knowledge that all of the cases will actually have the desired neck tension.
Share the post "ABCs of Neck Turning — Here is How It’s Done"
K&M Precision Shooting Products has two very handy products you may not know about yet. The first, a brilliantly simple device that lets you see your case necks as you expand them, can be used by anyone who necks-up brass (with a compatible expander die body). The second new product is a specialized “fat grip” holder that will make neck-turning easier for those of you out there who use K&M neck-turners.
K&M Expand Mandrel Window Riser
This is a simple threaded extension placed between your expander die body (K&M Expand Iron) and the top of your press. It carries the expander mandrel higher, above the press, and has a cut-out view port so you can see the mandrel as it passes through the neck. Smart, eh? This provides visual feedback during the process of expanding your brass. The patent-pending view riser costs $20.00. Will it expand necks faster, or reduce run-out? We doubt it, but we still would like to have one, if only to eyeball the mandrel to control the neck-entry rate more consistently from case to case.
Installation: Thread the Expand Mandrel Window Riser into the top of your loading press, then thread the K&M Expand-Iron (Expander Die Body) fully into the top of the window riser and adjust each so you can stroke out the press completely without driving the case mouth into the press adapter. This allows you to view the expanding operation which is typically blind under the press. The riser also eliminates the need for the stop screw in the expander mandrel. LINK: Expand Window Riser Instructions (PDF).
Ergo Holder for K&M Neck-Turning Tool
K&M’s rounded, oversized Ergo Holder lets you hold the K&M neck-turning body more securely (and with less hand cramping). Priced at $35.00, it is an expensive accessory, but we suspect many guys with K&M neck-turners will spring for an Ergo holder just because it gives you a more secure and comfortable grip on the small, square-edged K&M neck-turner.
Customer Feedback Inspired K&M’s Ergo Holder
The folks at K&M told us that their new Ergo Holder was produced in response to customer requests: “[Customers reported that] the neck turner can be hard to hold due to its compact size, especially in high-volume use. The Ergo Holder is machined from aluminum, providing a fatigue-proof grasp of the neck turner. Its mass works like a heat sink to help dissipate heat from the pilot during the turning process. The neck-turner body easily assembles into the Ergo Holder and is held in place with one set screw. The Ergo holder is also designed with the dial indicator in mind and actually makes its use more convenient”.
LINK: Ergo Holder Installation/Use Instructions (PDF).
Share the post "K&M Ported Expander Mandrel Riser and Neck-Turner Grip"
by GS Arizona, Riflemans Journal
Neck turning isn’t a once-in-a-while operation at my reloading bench. I shoot a lot, go through a fair amount of brass and neck-turn every piece of brass I use. I like the K&M neck turner, it’s well designed, well made, affordable if you like to have more than one caliber permanently set up and so that’s what I use. The only flaw in the K&M is that the tool itself is small enough that holding it for long and frequent session of neck turning is literally a pain. If you happen to have arthritis, it’s even more so.
Pendergraft Holder for K&M Neck-Turner Joel Pendergraft makes a great tool holder for the K&M that does away with the pain as it gives a much larger and more comfortable gripping surface. The tool holder is made from aluminum, nicely machined and knurled for a good grip. I thought it was well worth the price of $48.00 delivered in the USA (Price may have gone up since this story was written). Switching the tool holder from one K&M turner to another is a matter of loosening the set screw on the side, slipping out one turner, inserting the other and re-tightening. The Pendergraft tool-holder is simple, well-made, fairly priced and a real joy to use. Who could ask for more?
If you have questions or want to order the K&M tool holder, contact Joel Pendergraft via email: joelpend@bellsouth.net .
Share the post "Gear Review: Pendergraft Holder for K&M Neck Turner"
Part of the Precision Rifle Series, the GAP Grind is one of the premier precision tactical matches of the year. Top tactical shooters from around the country will compete for glory (and $100,000 worth of prizes) in this year’s GAP Grind, hosted at the K&M Precision Rifle Training Center in Baker, Florida. The GAP Grind is a notoriously challenging, “high tempo” match with minimal “down time” between stages. The course of fire involves multiple stages, with an assortment of steel, reactive, paper and automated moving targets situated from 50 to 1000 yards.
Target sizes will vary in difficulty based on the shooters position, distance and time allotted. To heighten the challenge, most stages will involve time limits and/or movement requirements. Scoring will follow Precision Rifle Series guidelines to reward the most consistent shooters. The cost of the GAP Grind is $275.00 per competitor and shooters must bring at least 175 rounds of ammunition. Rifles are limited to cartridge sizes no larger than .300 Win Magnum. The Course of Fire will be revealed at the start of the competition on Saturday, October 26th.
“Train-Up” Session on Friday, October 26
An 8-hour Train-Up Course will be offered to competitors on Friday, 26 October from 7:00 am to 3:00 pm. The course will review basic fundamentals and rapidly transition to range exercises and drills commonly seen in today’s precision rifle competitions. K&M Precision staffers and members from the GA Precision Rifle Shooting Team will provide hands-on instruction. During the Train-Up session, competitors can confirm their come-ups at 100-1000 yards, engage moving targets, and shot at multiple range props and targets. While the Train-Up will be held at the same location as the GAP Grind, but there will be no training that actually duplicate Grind competition stages. The Train-up and Match fee cost is $525 and will limited to maintain a 1 to 5 instructor to student ratio.
Share the post "“GAP Grind” Tactical Match Kicks Off Next Weekend in Florida"
K&M Precision Shooting Products has two very handy products you may not know about yet. The first, a brilliantly simple device that lets you see your case necks as you expand them, can be used by anyone who necks-up brass (with a compatible expander die body). The second new product is a specialized “fat grip” holder that will make neck-turning easier for those of you out there who use K&M neck-turners.
K&M Expand Mandrel Window Riser
This is a simple threaded extension placed between your expander die body (K&M Expand Iron) and the top of your press. It carries the expander mandrel higher, above the press, and has a cut-out view port so you can see the mandrel as it passes through the neck. Smart, eh? This provides visual feedback during the process of expanding your brass. The patent-pending view riser costs $20.00. Will it expand necks faster, or reduce run-out? We doubt it, but we still would like to have one, if only to eyeball the mandrel to control the neck-entry rate more consistently from case to case.
Installation: Thread the Expand Mandrel Window Riser into the top of your loading press, then thread the K&M Expand-Iron (Expander Die Body) fully into the top of the window riser and adjust each so you can stroke out the press completely without driving the case mouth into the press adapter. This allows you to view the expanding operation which is typically blind under the press. The riser also eliminates the need for the stop screw in the expander mandrel. LINK: Expand Window Riser Instructions (PDF).
Ergo Holder for K&M Neck-Turning Tool
K&M’s rounded, oversized Ergo Holder lets you hold the K&M neck-turning body more securely (and with less hand cramping). Priced at $35.00, it is an expensive accessory, but we suspect many guys with K&M neck-turners will spring for an Ergo holder just because it gives you a more secure and comfortable grip on the small, square-edged K&M neck-turner.
Customer Feedback Inspired K&M’s Ergo Holder
The folks at K&M told us that their new Ergo Holder was produced in response to customer requests: “[Customers reported that] the neck turner can be hard to hold due to its compact size, especially in high-volume use. The Ergo Holder is machined from aluminum, providing a fatigue-proof grasp of the neck turner. Its mass works like a heat sink to help dissipate heat from the pilot during the turning process. The neck-turner body easily assembles into the Ergo Holder and is held in place with one set screw. The Ergo holder is also designed with the dial indicator in mind and actually makes its use more convenient”.
LINK: Ergo Holder Installation/Use Instructions (PDF).
Credit Forum Member EdLongRange for spotting these new K&M products.
Share the post "See-Through Expander Riser and Ergo Holder from K&M"
Gear Review: 21st Century Neck Turner by Germán A. Salazar
A new neck-turning tool with easy adjustments, super-high quality of manufacturing and an ergonomic design sounds like a good thing to me. If you also like good tools and like to keep up with developments in the field, read on (most of the pictures can be enlarged by clicking on them).
I recently received the new Neck-Turning Tool made by John at 21st Century Shooting. I always enjoy seeing John’s work because he really has a good grasp on how a tool should be designed to work effectively and this tool certainly fits that mold. The basic requirements of a good neck turner are: (a) accurate adjustments, (b) good blade design, (c) ergonomic design and (d) a well thought-out system of ancillary items. Let’s look at each of those areas and give the tool a test drive.
Handy Cut-Depth Adjustment Dial
The 21st Century neck turner has a unique dial adjustment for the depth of the cut which makes small adjustments simple and fast. Each full number represents 0.001″ of cutter movement, and the fine lines in between let you zero in on the exact neck wall thickness that you need. The dial is simply turned in until the desired neck thickness is reached. If you go too far, it’s best to turn it out a full turn, then back in once again; this reduces the effect of any backlash that might exist in the threads. I found the dial easy to use and had no trouble getting to my usual thickness setting of 0.0125″.
Excellent Carbide Cutter Blade Design
At its core, a neck turner is a cutting tool and good blade design is what sets any good cutting tool apart from the competition. Here, John really shows his ability as a designer and manufacturer. The blade supplied on my tool is carbide and cuts brass effortlessly, however, that’s not the real point of interest. Many neck turners have blades with less than ideal nose radius and create a “threading” effect on the neck unless the tool is fed over the brass at a very slow rate. The 21st Century blade has a good radius at the transition to the shoulder angle which allows for a smooth cut with a reasonable feed rate.
The shoulder angle is another well thought-out feature as it is a very close match to the actual shoulder angle of the case. This allows you to bring the cutter a bit further into the shoulder without weakening it and definitely avoid the subsequent occurrence of the donut of thick brass at the base of the neck. (When ordering, 21st Century lets you specify one of four (4) different cutter shoulder angles to match your particular cartridge: 20°, 30°, 35°, and 40°.) The photo of the case in the cutter shows the cutter making solid contact with the shoulder after a substantial cut on the neck, yet the shoulder was really just lightly touched. I backed the cutter off a bit from this setting for the final adjustment. If you tend to use heavy bullets which extend below the base of the neck, this feature alone makes John’s tool worthwhile.
Turning necks is tedious, especially if you’re turning a large number of cases as High Power shooters generally do. Accordingly, a design that takes ergonomics into consideration is highly appreciated. Note the slight hourglass shape of the tool, that really lets your hand take a grip that counters the natural tendency of the tool to turn with the rotation of the case, especially when turning with a power case driver. The size of the tool itself also helps; if you’ve used one of the smaller tools on the market, you know just how tired your hand can get from trying to hold on to it after a while! I turned 70 case necks in two sessions with the 21st Century tool and my hand and fingers remained comfortable throughout.
However good the turner may be, it doesn’t work alone. Any neck turner needs a matching expander. The 21st Century expander is a nicely designed unit that allows you to change expander sizes with no tools by simply unscrewing the cap of the die body and dropping in the appropriate expander.
K&M Arbor Adapters Available
I’ve been using a K&M turner for some years now and have accumulated turning arbors (mandrels) in various sizes. John knows that’s the case for many of us, so he makes affordable adapter bushings for his tool that allow the use of K&M turner arbors. That’s a nice feature that will allow me to save the price of a few arbors and expanders. The adapter for K&M arbors costs $12.00.
Although I use a cordless screwdriver to turn the case, I still like to have a manual option for case turning. Sometimes the cordless driver dies with just a few cases left to go in a session and I know that, one day, when I most need it, it’ll just quit altogether. John’s case handle for manual case turning is another well-designed, ergonomic piece that shows his careful, thoughtful approach to tool design. He even makes a version of it for the .50 BMG if your tastes in cartridges run on the large side!
Neck-Turning Tool and Accessory Order Information
Order the Neck Turner and accessories through www.21stCenturyShooting.com, or call (260) 273-9909. The 21st Century neck-turning tool, by itself, costs $78.00, including a carbide cutter (standard size). You can chose among four different cutter shoulder angles, to match your particular cartridge: 20°, 30°, 35°, and 40°. Additional carbide cutters cost $26.00-$28.00. Caliber-specific turning arbors and expander mandrels are priced at $7.95 each. The standard size Universal Case-Holding Handle (photo above), costs $16.95.
You can also purchase a complete Neck-Turning Tool Kit from 21st Century. This $112.99 package includes everything you need:
Neck Turning Tool w/cutter
Turning Arbor
Expander Mandrel
Expander Die Body
Loading Die Locking Ring
Neck Turning Universal Handle
Disclosure: 21st Century Shooting, an advertiser on this website, provided a neck turner tool and accessories to German Salazar for testing and evaluation.
Share the post "NEW Neck-Turning Tool From 21st Century Shooting"
Graf & Sons’ summer promo catalog was just released. CLICK HERE to download the Grafs.com flyer (9 mb .pdf file). It’s worth downloading Grafs’ summer catalog because it has some awesome deals, and the flyer features hot, new products such as the BenchSource Savage Scope Rail (see below), Whidden Bullet Pointer, and the Davis BulzEye Pro optical booster. In addition, Graf’s summer flyer includes the complete line-up of K&M reloading tools (see below), and a wide variety of Wolf Ammo and Lapua components.
As you can see above, Grafs.com is now selling the MTM Shooters’ Range Box for just $21.99. That’s an awesome deal on an excellent product — we use it ourselves and recommend it. The $22 price (40% OFF) is a such a steal that you may want to order two. The MTM Range Box sells elsewhere for up to $45.00.
The full line of K&M reloading tools and accessories is now offered by PrecisionReloading.com. The popular K&M Arbor press (with optional seating force measurement gauge) is in stock. The K&M arbor costs $78.00, or $115.00 with the force measurement system. This clever design uses a Belleville washer stack and linkage to show the force required to seat your bullet on a standard dial indicator mounted on the top (dial indicator is $22 extra.) In addition, Precision Reloading offers K&M neck-turning tools, primer seaters, expanders, neck reamers, and flash-hole uniformers.
This editor has tried out many different arbor presses. The K&M is my favorite. For me, the force measurement system acts like a warning light, telling me if something is way off in the bullet seating process. If you see the dial indicator needle jumping around wildly, or spiking too soon, you know that case has excessive neck tension, or perhaps the bullet is oversize in diameter (it happens). Currently, the K&M is the only arbor press with a seating-force gauge. The only down-side to the K&M arbor is that you must adjust multiple bolts to set the ram height. By contrast, the Sinclair Int’l Arbor and some other arbors feature a quick-release lever that lets you adjust ram height quickly and easily.
Based in Mitchell, South Dakota, Precision Reloading is run by active, knowledgeable shooters. In addition to centerfire reloading supplies and tools, Precision Reloading offers a full line of shotshell components and shotgun reloading equipment, plus optics, cleaning supplies, gun cases, and hunting gear. This month Precision Reloading is running an optics sale on Bushnell, Sightron, and Vortex scopes, binoculars, and spotting scopes.
Share the post "Advanced K&M Arbor Press at Precision Reloading"
K&M Services, maker of such popular products as the K&M Neck Turner, Arbor Press, case mouth reamers, flash hole uniformers, and primer tools, has been sold. Ken Markle, at the age of 71, has decided to retire. The new owner is Roger Miller Jr. of Michigan. Roger is in the process of launching a New K&M website. Hopefully, that will be up and running soon. As far as we know, Roger Miller will continue to offer all the products Ken Markle was producing prior to his retirement. For more information, contact:
K&M Precision Shooting Products
Roger Miller Jr.
6852 Lakeshore Road
West Olive, MI 49460
Telephone: 616-399-7894
E-Mail: info@KMShooting.com | sales@KMShooting.com
Most K&M products can still be purchased through Precision Reloading, a full-service vendor with print catalog and online store.
Share the post "K&M Tools Moves to Michigan — Ken Markle Retires"
Joel Pendergraft makes a great tool holder for the K&M that does away with the pain as it gives a much larger and more comfortable gripping surface. The tool holder is made from aluminum, nicely machined and knurled for a good grip. I thought it was well worth the price of $48.00 delivered in the USA (Price may have gone up since this story was written). Switching the tool holder from one K&M turner to another is a matter of loosening the set screw on the side, slipping out one turner, inserting the other and re-tightening. The Pendergraft tool-holder is simple, well-made, fairly priced and a real joy to use. Who could ask for more?
Turning necks is tedious, especially if you’re turning a large number of cases as High Power shooters generally do. Accordingly, a design that takes ergonomics into consideration is highly appreciated. Note the slight hourglass shape of the tool, that really lets your hand take a grip that counters the natural tendency of the tool to turn with the rotation of the case, especially when turning with a power case driver. The size of the tool itself also helps; if you’ve used one of the smaller tools on the market, you know just how tired your hand can get from trying to hold on to it after a while! I turned 70 case necks in two sessions with the 21st Century tool and my hand and fingers remained comfortable throughout.
You can also purchase a complete 
The full line of K&M reloading tools and accessories is now offered by 
