May 14th, 2019

Precision Expander Mandrels from 21st Century Shooting

21st Century Shooting expander mandrels die body precision

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:

21st Century Shooting expander mandrels die body precision

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!”

Permalink Bullets, Brass, Ammo, Gear Review, New Product, Reloading 1 Comment »
October 4th, 2016

Toolmaker’s New Hammer — .284 Win F-Open Rig by Cigarcop

John Perkins 21st Century Shooting Cigarcop F-Open .284 Winchester

Forum member Keith W. (aka “Cigarcop”) is a talented riflesmith whose projects display outstanding finish work and attention to detail. Keith does some of the best bedding work we’ve ever seen. Recently Keith completed a rifle for tool-maker John Perkins, owner of 21st Century Shooting. John, who recently competed at the F-Class Nationals in Lodi, WI, wanted a new F-Open rifle with top-of-the-line hardware and a sweet-tracking stock. We think John will be impressed with this gun — and we bet it proves to be an tack-driving “hammer”. John will use the 21.5-lb rifle for F-Open competition and some mid-range and long-range benchrest competition in HG class.

This stock sports 12 coats of Urethane, wet-sanded between each coat.
John Perkins 21st Century Shooting Cigarcop F-Open .284 Winchester

This competition rifle features a melonited BAT “M” action (with Bix’N Andy trigger), a pair of 7mm Brux barrels chambered in .284 Win, and a Precision Rifle & Tool (PRT) Low-Boy stock. As you can see from these photos Keith posted in our Shooters’ Forum, this is a beautifully-finished rifle. If you have questions about this project, direct them to Cigarcop in this FORUM Thread.

Build Details for a Beautiful F-Open Rig
Keith reports: “The rifle is built on a PRT Laminated Low-Boy F-Class Stock with a Bat M Melonited Action, +20 MOA rail, Pillar bedded in Devcon 10110. After bedding and inletting I clear-coated the stock with 12 Coats of a 3-part Urethane finish which was wet-sanded between each coat and sanded out to 2000 before final polishing. John Perkins provided two Brux 1:9″-twist, 1.250″-contour barrels. They are both finished at 31″ and chambered in straight .284 Win with .313″ neck and .213″ freebore to shoot the 180gr Berger Hybrids.

Cigarcop does superb bedding work, as you can see…
John Perkins 21st Century Shooting Cigarcop F-Open .284 Winchester

John chose the Bix’N Andy trigger after sampling one of Erik Cortina’s rifles at the Berger SW Nationals. “I tried the BNA trigger on Erik’s gun and I was so impressed. It is very light but 100% consistent. After an injury I’ve lost some feel in my trigger finger and the BNA helps because it is so smooth. I would never go back to anything else.”

John Perkins 21st Century Shooting Cigarcop F-Open .284 Winchester

New Seating Die from 21st Century
While talking about his new rifle, John Perkins revealed that he has developed a very sophisticated new micrometer seating die: “This is something very new, and unlike anything else on the market. Each die is tailored to the dimensions and ogive curve of your particular bullet which we measure with an optical comparator. The customer provides fired, sized brass and sample bullets and we can produce a perfect match.”

John says his new seating dies produce ultra-consistent base-to-ogive load lengths along with exceptionally low run-out. “This new die produces incredibly straight ammo — there are some special features inside the die that help straighten the bullet during the seating process”. That delivers “truly superior concentricity” according to John. 21st Century Shooting will be taking orders soon for the new seating die. Call (260) 273-9909 for more information.

Permalink Competition, Gunsmithing 2 Comments »
August 3rd, 2015

New Bore Guide Products from 21st Century Shooting

Chamber-specific bore guide off barrel solvent chamber seal 21st Century Shooting John Perkins

It’s important to use a good-fitting bore-guide whenever you clean your barrel. A good bore-guide will keep solvents out of your action and help your cleaning rods run straight and true.

Not all bore guides are created equal. Some offer a sloppy fit and/or fail to seal your chamber effectively. 21st Century Shooting has changed all that with a new generation of chamber-specific Bore Guides. These have a close fit (with O-rings) to seal your chamber completely. The design is intelligent — these bore guides are long enough to extend well past the end of your scope, while the minimal rod diameter provides sufficient clearance for most combs. Priced at $49.99, these high-tech guide rods are custom crafted to fit many popular chamberings: 220 Swift, 223 Rem, 22-250, 6PPC, 6mmBR, 6 Dasher, 6×47, 6-284, 6mm Shehane, 243 WSM, 6.5×47 Lapua, 6.5-284, 6.5 Shehane, 6.5 WSM, 25-06, 270 WSM, .284 Win, 7mm Shehane, 7mm WSM, 30 BR, 308 Win, 30-06, 300 WSM.

Chamber-specific bore guide off barrel solvent chamber seal 21st Century Shooting John Perkins

Email John [at] 21stcenturyshooting.com to ask about your application. These chamber-specific guide rods are designed fit actions with BAT bolts or Rem 700-style bolts (Borden, Kelblys, Ruger, Savage).


In addition to the new chamber-specific Guide Rods, 21st Century just released a clever new product for shooters who regularly swap barrels (or who need to clean dismounted barrels). If you have a switch-barrel rig, check out 21st Century’s new Barrel Off Bore Guides. Like the full-length 21st Century bore guides, these are manufactured specifically for your chamber, for a perfect fit. These chamber-specific “Barrel Off” bore guides cost $19.99.

Chamber-specific bore guide off barrel solvent chamber seal 21st Century Shooting John Perkins

Product Tip from EdLongrange. We welcome reader submissions.

Permalink Gear Review, New Product 1 Comment »
February 26th, 2011

New Neck-Turning Tool Holder from 21st Century Shooting

The wizard tool designer who runs 21st Century Shooting has invented a clever yet inexpensive new bench accessory that makes it much easier to turn case-necks. 21st Century’s new Neck Turning Tool Swivel Bracket gives you a “third hand” when using the 21st Century Neck Turning Tool, simplifying the process of neck turning, particularly when using power.

neck turning tool bracket

CNC-machined from aluminum billet, 21st Century’s Swivel Bracket mounts right on your bench. You can either attach it semi-permanently with screws or simply clamp it in place. Adjust your neck-turning tool (red unit in photo), at any angle from 0-90°, for best viewing of the cutter operation. With your neck-turning tool attached to the bracket, you have easy access to the arbor adjustment screw, arbor screw clamp, and the bracket rotation clamp screw. Once you’ve adjusted the angle, and locked the neck turner in place with the supplied Allen wrench, you can concentrate on turning the case, either by hand, or with power assist. The neck-turning tool is held securely; however, rubber bushings on the bracket allow the neck-turning tool to “float” just enough to work properly when using power.

This new Neck Turning Tool Swivel Bracket is simple, but very effective. It really does help you turn necks with greater ease and a greater sense of security. Importantly, the bracket lessens hand fatigue. No more “cramped hand syndrome” from struggling to hold the neck-turner steady. We really like this little device, and it only costs $19.95. However, for the time being, the Swivel Bracket ONLY works with the 21st Century Neck Turning Tool — it does NOT work with a Hornady, K&M, Neilson, or Sinclair Neck Turning Tools. For more info, call 260-273-9909 or visit 21stCenturyShooting.com.

Permalink Gear Review, New Product, Reloading 5 Comments »