AR-15 Cartridge line-up image from 80% Arms, used with permission. This selection omits our favorite alternative — the 20 Practical (.223 Rem necked down to .204 Caliber).
Instead of using the standard .223 Remington or 5.56x45mm NATO round, you have many options for an AR-15, as shown above. This photo is from Complete Guide to Alternative AR-15 Rounds in the 80% Arms Blog. Some of the most notable alternative chamberings for AR-15s are:
20 Practical — Simply the .223 Rem necked down to .204 caliber. Requires new barrel. Same bolt, same magazines. Best Bang for the Buck. 6.5 Grendel — Moderately expensive, 6.5 Grendel requires a new barrel, bolt, and magazines. Most use the 6.5 Grendel for competitive shooting and/or hunting. .300 Blackout — Moderately expensive, the .300 Blackout requires a barrel change. This is used for home defense, and hunting. WARNING — with some bullets this round can be chambered in a .223 Rem barrel, with disastrous consequences. .458 SOCOM — Pretty expensive, requires new barrel and bolt. The .458 SOCOM round is typically used for hunting though it was originally designed for Close Quarters Battle (CQB). .50 Beowulf — The most expensive alternative AR-15 cartridge, this requires new barrel and bolt. The .50 Beowulf was created for game hunting, but most hunters use something more practical.
Of these five options, our top choice is the 20 Practical, followed by the 6.5 Grendel. Check out our featured 20 Practical AR Rifle Report. This 20 Practical cartridge is highly effective on small varmints, and has shown outstanding accuracy in AR-platform rifles crafted by Robert Whitley.
20 Practical — High-Velocity, Affordable Alternative
The 20 Practical is simply a .223 Remington necked down to .204 caliber. This efficient little cartridge can launch 32-grainers at over 4200 fps, with impressive results on P-Dogs. This makes the 20 Practical a great choice for an AR-based varmint rifle.
20 Practical Ultimate Varminter
A decade ago, as a “proof-of-concept”, AccurateShooter.com created a 20 Practical AR15 Ultimate Varminter with a custom 20-caliber upper from Robert Whitley of AR-X Enterprises, LLC. That project rifle was ultra-accurate — every 5-shot group out of the gun was less than the size of a dime. That gun was auctioned off, but Robert Whitley continues to produce custom 20 Practical AR15 uppers. (The 20 Practical cartridge is simply the .223 Rem necked down to 20 caliber — you can use standard .223 brass and load with standard .223 Rem dies. Just swap in a smaller expander and use smaller neck bushings.)
The 6.5 Grendel — Accurate, Plus Good for Hunters
The 6.5 Grendel round is one of the most accurate cartridges for the AR-15 platform. The 6.5 Grendel round offers a larger-diameter, .264-caliber (6.5mm) bullet running at good velocities. This provides ample energy for smaller game and deer. The 6.5 Grendel is often used for hunting deer up to 300 yards.
History of the 6.5 Grendel Cartridge
The 6.5 Grendel originated as a 6mm PPC necked up to 6.5 mm. After Alexander Arms relinquished the “6.5 Grendel” Trademark, the 6.5 Grendel was standardized as an official SAAMI cartridge. It has become popular with target shooters and hunters alike because it is accurate, efficient, and offers modest recoil. Good for small to medium game, the 6.5 Grendel is becoming a popular chambering in lightweight hunting rifles, such as the Howa 1500 Youth Model.
The .300 Blackout — Risky Business
The .300 Blackout appeals to folks who want a .30-caliber defense round. This can be loaded at various velocities. Loaded at subsonic speeds and shot with a suppressor, the .300 BLK offers very low sound levels. Unfortunately, that .300 Blackout cartridge can fit in a .223 Rem chamber. Shooting a .308-caliber bullet in .223 bore is a recipe for disaster.
The .300 AAC Blackout aka “300 BLK”, is a compact 30-caliber cartridge designed to work in AR-15 rifles. It has a shorter cartridge case to accommodate the bigger 30-caliber bullet while still fitting in a standard AR-15 magazine. Unfortunately, that’s the danger. A careless shooter can toss a .300 Blackout cartridge in with .223 Rem rounds without noting. And because the case-head size is the same as the .223 Rem (5.56×45) the rifle’s bolt assembly will happily chamber and fire the .300 BLK round. Problem is, that forces a .308 diameter bullet down an undersized .223-caliber bore. Not good!
This images were provided by Tactical Rifle Shooters on Facebook. The message was clear: “Don’t try to run 300 Blackout in your .223/5.56mm. It won’t end well. The problem is identical rifles and identical magazines but different calibers.”
Image from Accurate Shooter Forum. Cutaway shows the jammed .30-Cal bullet:
For those who MUST have a .300 Blackout, here are some things you can do:
1. Use different colored magazines for .300 Blackout vs. .223 Remington.
2. Mark .223 Rem upper handguards with the caliber in bright paint.
2. Fit all your uppers with caliber-labeled ejection port covers.
4. Mark all .300 BLK Rounds with heavy black marker.
SUMMARY: This article reviews a device that “triggers” the LabRadar chronograph to register bullet speed. Rather than activate by sound or Doppler reading, this $35 JKL Inertial Trigger works from the rifle’s instantaneous recoil pulse when a shot is fired. After some frustration with his LabRadar when shooting at a range with reflective surfaces, our tester is now reporting that 100% of his actual shots are being captured correctly by his LabRadar chrono equipped with the JKL Inertial Trigger. He won’t use his LabRadar without it now. Other users have become instant fans of this inertial LabRadar trigger as well. It is very affordable and it works great. VIEW LARGE PHOTO.
JKL Inertial Trigger for LabRadar Chronograph
Product Review by F Class John
The LabRadar chronograph has been one of the most revolutionary tools in the shooting world because of how it collects velocity data, how it reports (and stores) that data, and, ultimately, the ease with which it can be positioned and operated. However, it’s not a perfect system. A majority of the complaints come from users whose LabRadar’s sometimes fail to record all the shots fired in a string. For the average plinker, this may not be an issue. But for serious shooters trying to do ladder tests or load development requiring all shots to be reported, it can be frustrating when a shot is missed.
Traditionally, LabRadar has recommended trying different settings that compensate for the gap between the unit and muzzle as well as well as having different options for how the unit recognizes a shot fired. While these options work to some degree, they aren’t a guaranteed fix especially when shooting at ranges with concrete baffles or with roofs, walls, and dividers that can alter sound waves. While nobody can precisely explain why shots are lost under certain circumstances, the fact remains it DOES happen. In addition, the default system can sometimes pick up stray shots from nearby rifles.
Not willing to give up on this sophisticated chronograph, many shooters have looked for a foolproof way to prevent such failures from happening. In fact, for this shooter, the frustration was so high that I actually sold my first LabRadar and went back to another chronograph before ultimately buying another LabRadar almost a year later. But I made that repeat purchase only after vowing to finding a way to make the LabRadar work — EVERY time, for EVERY shot.
See How JKL Inertial Trigger Works in this Video
JKL Inertial Trigger — Outstanding Product That Works Great
Enter the JKL Trigger for the LabRadar. This is an easy-to-use, inertial-driven trigger that activates simply from the recoil of your gun. The unit consists of a small rectangular pad attached to a long audio cable. All you do is plug in the audio cable, attach the pad to your gun with the provided hook and loop (Velcro) material. Then (important), you must change the LabRadar trigger settings from “Doppler” to “Trigger”. The unit works great and is easy to set up. In my experience, the unit will activate no matter where you place it on a stock. However the recoil of every gun is slightly different, so you will need to make sure you find a location that doesn’t interfere with your shooting setup.
An unexpected benefit of using the JKL trigger is that it gives you a larger area in which to place your Labradar unit, making it more convenient to setup on benches or range stations. I found this a welcome relief since the LabRadar originally seemed somewhat fussy about where I placed it. Now I can place the LabRadar in more convenient locations — as long as it’s still near my gun and pointed at the target correctly, I get consistent bullet speed data.
Are There Issues with “False Positives”?
If there is any downside to using the JKL Inertial Trigger, it’s that a very hard bump or aggressive working of the action can trigger a false reading. However these are easy to identify in your data, because the speed value is way lower than true fired shot values. Simply remove that low entry or otherwise ignore it in your calculations. To be fair, this “bump activation” really doesn’t happen very often once you get used to using the inertial trigger.
SUMMARY — Outstanding Accessory for LabRadar Users
Bottom line — if you own a LabRadar, then definitely get a JKL Inertial Trigger. Priced at just $35.00 this device is not expensive, yet it’s one of the most effective accessories you can buy for the LabRadar. I’ve recommended these inertial triggers to dozens of shooters. Every one of those guys who did buy a JKL trigger says they can’t imagine using a LabRadar without one. If you love what the LabRadar can do, but have been frustrated with shots not getting recorded 100% of the time, then definitely get yourself a JKL Inertial Trigger. It turns a good system into an amazing system. JKL Industries states that its inertial trigger “will work on anything from a .22 LR to a suppressed system or with standard rifle and brake.”
Impressive engraving by Jesse Kaufmann. Note how the scope rings have been engraved to perfectly match the engraving pattern on the Remington 547 action.
Who says fine craftsmanship is dead? There’s a fellow up in South Dakota, Jesse Kaufmann, who produces some of the most handsome engraving we’ve seen. Jesse, who operates Black Hills Gunstocks and Engraving LLC, is a true master at metal engraving and he also does superb stock checkering. Here are some examples of Jesse’s engraving work:
About Jesse Kaufmann, Master Engraver
Jesse Kaufmann was a professional stockmaker for Dakota Arms for over a decade. In 2009, he was inducted in the American Custom Gunmakers Guild as a checkering specialist. In January 2017, Jesse was awarded his Master Engraver certification by the Firearms Engravers Guild of America. With his broad skill set, Jesse is able to offer his clients a unique and complete package of stock work, finish, checkering, and engraving for a custom package that is all completed under one roof by his own hands.
Jesse Kaufmann’s work has been featured in American Rifleman, American Hunter, FEGA’s The Engraver, Sports Afield, Waidmannsheil Journal of German Gun Collectors Assn., Gun Digest 71st Edition, Modern Custom Guns Volume 2, Dangerous Game Rifles 2d. Edition. For more info, visit BlackHillsgunstocksandengraving.com, email blackhillsgunstocks [at] gmail.com, or call Jesse at (605) 499-9090.
At the request of our readers, we provide select “Deals of the Week”. Every Sunday afternoon or Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.
⏺ Amazing deal for under $290 — Sights, good ergos, action and forearm rails
Looking for a semi-auto defensive 12 gauge? This Citadel Warthog offers reliable function, nice ergonomics, and the features you want, all for just $288.99 cash price ($297.66 Credit Card). This nice scattergun boasts a black metal finish and black synthetic stock with black pistol grip. It comes standard with raised tactical rear sight and ghost ring front sight plus a Picatinny rail on the action and on the forearm (for lights etc.). This shotgun includes 3 extended choke tubes. A recent buyer was pleased: “Reliable, great ergonomics, will cycle everything”.
⏺ Killer Deal, Save $300 — better than other brands costing hundreds more
Guys, here’s a GREAT Nikon deal at Grafs.com. These very same Nikon LaserForce 10×42 LRF Binoculars are $1199.95 at Optics Planet and $1196.95 on Amazon. These feature HD Glass with long eye relief, 1900-yard range (on reflective targets), Incline/Decline “smarts”, and OLED display with 4-step intensity adjustment. Hunters — you won’t find better LRF binoculars at anywhere near this price. NOTE: This has sold out at this $300 OFF price. However, many of our readers were able to purchase these LRF binocs. Remember to check for Monday Deals as early as possible.
3. KYGUNCO — Anderson AM-15 (AR) Lower Receiver, $79.99
⏺ More gun control is coming — get an AR lower while you can
With the developments in Washington, it will likely become more difficult to purchase an AR-platform rifle in the future. You may want to get an AR lower now, while you can, at a reasonable price. KYGUNGO (Kentucky Gun Co.) is selling the Anderson AM-15 AR15 Lower Receiver for just $79.99 (cash price) or $82.39 (credit card). This is a mil-spec 7075 T6 Forged aluminum lower, Type 3 Hard Anodized. Flat-Rate Shipping to your FFL is just $11.99. These could sell out quickly.
4. Amazon — Double Rifle Backpack Case from $66.99 (36″)
⏺ Great cases 36″ to 55″, many compartments, good shoulder straps
It’s hard to find quality tactical gun cases that fit long match rifles. This Savior Gun Case (55″ model) can hold two rifles up to about 54″ OAL. Five (5) sizes are available: 36″, 42″, 46″, 51″, and 55″. This is a great choice for PRS. The Savior 51″ version in FDE Tan is $94.12 while the biggest 55″ Savior Tactical case starts at $97.99 on Amazon in black. Either is big enough for most PRS rifles, even with long barrels. The shorter 36″ case is just $66.99. These Saviour cases, #1 Best Sellers on Amazon, come in multiple colors: FDE Tan, OD Green, Multi-Cam, Black, and Gray.
5. Amazon — Vortex Diamondback HD Spotting Scope, $399.00
⏺ Great Spotting Scope Deal — hard to beat at twice the price
Whether hunting or target shooting, spotting scopes get you on target faster and easier than bare eyes or riflescope. If you need a good HD-grade spotter, check out the Vortex Diamondback HD 16-48x65mm angled spotting scope for $399.00. It offers great clarity and rock-solid lifetime guarantee. Relatively compact and weighing 49.8 ounces, this is a good choice for a hunter. There’s also a straight version for $399.00, with same 16-48X power and 65mm objective. If you need more magnification and low-light performance, Vortex offers the 20-60x80mm Diamondback HD spotter for $499.00.
6. Midsouth — Berry’s Tri-Can Ammo Carrier, $23.99
⏺ Very Handy New Product has Three Clear-Top Compartments
Midsouth now sells the new Tri-Can Utility Box Carrier for $23.99. This Tri-Can (from Berry’s) is a handy, versatile organizational tool that simplifies range trips. The tough injection molded plastic base and lids, rubber seal gaskets, and cam-lock latches keep contents safe. The Tri-Can boasts a strong, handy carry handle. The Tri-Can is made up of three individual translucent-lid containers which can be customized with up to three individual cells.
7. Amazon — Wheeler Digital Trigger Pull Gauge, $41.30
Every serious shooter should have a good trigger gauge. The Wheeler digital trigger gauge is precise and repeatable, measuring pull weights up to 12 pounds, making it suitable for all types of firearms. The load cell directly contacts the trigger making it extremely accurate with +/- 0.2 ounce precision. There are two modes: “Peak” and “Live.” Peak mode shows max force for each pull and calculates the minimum, maximum and average pull weights. Live mode continuously shows the force on the sensor. It even has a special adapter for Savage-style triggers with bladed inserts.
8. Brownells — Wipe-Out Foam Cleaner, $10.99
⏺ Wipe-Out Foam is effective, particularly when used right after shooting
Walking the firing line of the Berger SW Nationals this year, one cleaning product was mentioned over and over again and for good reason. Sharp Shoot R Wipe-Out foaming bore cleaner is a no-nonsense, easy-to-use bore cleaner that does a great job. We get best results with two applications of Wipe-Out after some wet patches. If you’re tired of long brushing sessions, give Wipe-Out a try — it really reduces brushing required. This is a great deal. The same 5 oz. can is $21.44 on Amazon.
⏺ Dual-purpose Empty Chamber Indicator that racks AR bolt
The Hornady Safe Cycle Rapid Rack is an empty chamber indicator (ECI) that also operates as a load assist device. The bright red lever visually displays that your AR’s chamber is empty. To “make ready”, simply shoulder the firearm, grab the lever and pull straight back and allow the Rapid Rack to fall to the ground as the now-charged bolt springs forward to feed a round into the chamber. You can also charge your AR normally as the Rapid Rackwill not interfere with standard operation. Just “grip it and rip it” with the inexpensive Hornady Rapid Rack, now just $9.90 at Midsouth.
10. Amazon — Real Avid Chamber Boss for ARs, $29.99
⏺ Essential tool for AR owners — handy, effective, self-contained
Cleaning AR-platform rifle chambers can be a pain, especially when it comes to removing the carbon. We found the Real Avid Chamber Boss is very effective on those dirty AR chambers and internals. The Chamber Boss includes a carbon scraper specifically designed for the AR chamber extension. This kit also include a chamber brush, and 5 special star-chamber cleaning pads. All these components fit right into the Chamber Boss’s handle, making transport simple and easy.
Most of us own a .223 Rem rifle. Now, thanks to our friends at Rifleshooter.com we can assess exactly how velocity changes with barrel length for this popular cartridge.
Rifleshooter.com performed an interesting test, cutting the barrel of a .223 Rem rifle from 26″ all the way down to 16.5″. The cuts were made in one-inch intervals with a rotary saw. At each cut length, velocity was measured with a Magnetospeed chronograph. To make the test even more interesting, four different types of .223 Rem/5.56 ammo were chron’d at each barrel length. The Rifleshooter.com team that conducts these tests has a full-service gun shop, 782 Custom Gunworks — visit 782guns.com.
Test Barrel Lost 25.34 FPS Per Inch (.223 Rem Chambering)
How much velocity do you think was lost, on average, for each 1″ reduction in barrel length? The answer may surprise you. The average speed loss of the four types of .223/5.56 ammo, with a 9.5″ shortening of barrel length, was 240.75 fps total (from start to finish). That works out to an average loss of 25.34 fps per inch.
5.56/.223 Barrel Cut-Down Speed Test 26″ to 16.5″
Start FPS at 26″
End FPS at 16.5″
Total Loss
Average Loss Per Inch
UMC .223 55gr
3182*
2968
214
22.5 FPS
Federal M193 55gr
3431
3187
244
25.7 FPS
Win m855 62gr
3280
2992
288
30.3 FPS
Blk Hills .223 68gr
2849
2632
217
22.8 FPS
*There may have been an error. The 25″ velocity was higher at 3221 fps.
Rifleshooter.com observed: “Cutting the barrel from 26″ to 16.5″ resulted in a velocity reduction of 214 ft/sec with the UMC 223 55-grain cartridge, 244 ft/sec with the Federal M-193 cartridge, 288 ft/sec with the Winchester M855 cartridge and 217 ft/sec with the Back Hills 223 68-grain match cartridge.”
How the Test Was Done
The testers described their procedure as follows: “Ballistic data was gathered using a Magnetospeed barrel-mounted ballistic chronograph. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. Average velocity and standard deviation were logged for each round. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. The barrel was cut off using a cold saw. The test protocol was repeated for the next length. Temperature was 45.7° F.”
See More Barrel Cut-Down Tests on Rifleshooter.com
Rifleshooter.com has performed barrel cut-down tests for many other calibers/chamberings including 6mm Creedmoor, .308 Winchester, and .338 Lapua Magnum. See these test results at Rifleshooter.com.
Much Different Results with 6mmBR and a Longer Barrel
The results from Rifleshooter.com’s .223/5.56 test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. When we cut our 6mmBR barrel down from 33″ to 28″ we only lost about 8 FPS per inch. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was longer than Rifleshooter.com’s .223 Rem start length. Velocity loss may be more extreme with shorter barrel lengths. And, of course, different cartridge types and powder/bullet combinations will yield different results.
Do you have .20-Cal fever? Do you yearn to see what a 4200+ fps projectile can do to an unsuspecting prairie dog? Well you could go out and purchase a 204 Ruger rifle, fork over the money for a new, complete die set, and hope that the brass is in stock. Warren B (aka “Fireball”) has a more cost-effective solution. If you have .223 Rem dies and brass, all you need to shoot the 20 Practical is a new barrel and a .230″ bushing to neck down your .223 cases. Warren’s wildcat is simple, easy, and economical. And the 20 Practical matches the performance of the highly-publicized 20 Tactical with less money invested and no need to buy forming dies or fire-form cases. Warren’s cartridge was aptly named. Practical it is.
20 Practical Tikka Bolt Action for Varminting
by Warren B (aka “Fireball”) and Kevin Weaver
After building my 20 PPC, I wanted to do another .20 caliber, this time a repeater for predator hunting that could also serve as a gopher/prairie dog rifle. I wanted to use a Tikka M595 stainless sporter I had. This rifle is the ultimate repeater with an extremely smooth-feeding cycle from its single-column magazine. Since the Tikka was a .223 Remington from the factory, I first looked at possible case designs that would fit the magazine. The 204 Ruger was a very new round at the time and brass was scarce. I also didn’t care for the overly long case design or the standard throat dimensions of the cartridge. I then looked at the 20 Tactical. It was a nice cartridge but I didn’t like the fact that (at the time) an ordinary two-die Tac 20 set with just a plain full-length die and standard seater were $150. Not only did the costs bother me, but I was accustomed to using a Redding die set featuring a body die, a Type-S bushing neck die, and a Competition seater. To be honest, I also didn’t care for the 20 Tactical’s name–there is absolutely nothing tactical about the cartridge. I didn’t want to adopt a new cartridge based on what I perceived to be a marketing gimmick (that “tactical” title).
Warren B, aka “Fireball”, with his Tikka 595. With its smooth action and phenolic single-column mag, it cycles perfectly in rapid fire.
Simply Neck Down .223 Rem to Make a 20-223 Wildcat
I decided the best thing to do for my purposes was to simply neck down the .223 Rem case and make a 20-223. I already had the dies, the brass, and a rifle that would feed it perfectly. I decided to call the cartridge the 20 Practical because as you will see in this article, it truly is a very practical cartridge. In addition to the generous and inexpensive availability of brass and dies, the 20 Practical is an easy case to create, requiring no fire forming as a final step. Simply neck your .223 Rem cases down, load and shoot.
[Editor’s Note: Over the years, other shooters have experimented with .223 Remington cases necked down to .20 caliber, some with longer necks, some with different shoulder angles. Warren doesn’t claim to be the first fellow to fit a .20-caliber bullet in the .223 case. He gives credit to others who did pioneering work years ago. But he has come up with a modern 20-223 wildcat that involves no special case-forming, and minimal investment in dies and tooling. He commissioned the original PTG 20 Practical reamer design, and he and Kevin did the field testing to demonstrate the performance of this particular version.]
I chose Kevin Weaver at Weaver Rifles to fit and chamber the barrel to my rifle. Kevin does excellent work and is great to work with. Kevin liked the idea of the 20 Practical so much he agreed to purchase the project reamer. (BTW Kevin didn’t even need to purchase a Go/No-Go gauge, he just used an existing .223 Rem gauge.)
Before Kevin ordered the reamer, I talked over the reamer specs with him. My priorities were tolerances on the tight end of the .223 Rem SAAMI specification, a semi-fitted neck with no need for neck-turning, and a short throat so that we could have plenty of the 32gr V-Max in the case and still touch the lands. I also wanted this short throat in case [anyone] wanted to chamber an AR-15 for the 20 Practical. A loaded 20 Practical round will easily touch the lands on an AR-15 while fitting into the magazine with no problem. With its standard 23-degree shoulder, the 20 Practical case also feeds flawlessly through an AR-15.
As for the barrel, I only use Liljas on my rifles. I have had great luck with them. They have always shot well and they clean up the easiest of any barrels that I have tried. I had previously sent my Tikka barreled action to Dan Lilja so that he could program a custom contour into his equipment and turn out a barrel that would perfectly fit the factory M595 sporter stock. There isn’t much material on an M595 sporter stock so the contour had to match perfectly and it did. Dan Lilja now has this custom contour available to anyone who would like to rebarrel their M595 sporter with one of his barrels.
There Are Plenty of Good .204-Caliber Varmint Bullet Options
How to Form 20 Practical Cases — Simple and Easy
Forming 20 Practical cases is very easy. No fire-forming is required. Start with any quality .223 Rem brass. Then simply run the case into your bushing die with the appropriate bushing and call it done.
Project Componentry
My 20 Practical rifle started out as a Tikka Model 595 Stainless Sporter in .223 Remington. Though the M595 is no longer imported, if you shop around you can find M595 Sporters for bargain prices. Mine cost under $500. I think the action alone is worth that! The receiver has a milled dovetail for scope rings plus a side bolt release like expensive BR actions. The bolt cycles very smoothly. Ammo is handled with super-reliable 3- or 5-round detachable single-column magazines (FYI, Tikka’s M595 22-250 mags will feed a 6BR case flawlessly.) We kept the standard Tikka trigger but fitted it with a light-weight spring. Now the trigger pull is a crisp 1.8 pounds–about as good as it gets in a factory rifle. We replaced the factory tube with a custom, 24″, 3-groove Lilja 12-twist barrel. Dan Lilja created a special M595 sporter contour to allow a perfect “drop-in” fit with the factory stock. For optics, I’ve fitted a Leupold 4.5-14x40mm zoom in low Talley light-weight aluminum mounts. All up, including optics and sling, my 20 Practical weighs just under 8.5 pounds.
Test Report–How’s It Shoot?
I sent the barrel and barreled action to Kevin and in a very short time it was returned. Kevin did a perfect job on the rifle. I had asked him to try to match the bead blasted finish of the Tikka when he finished the new barrel. It came out perfect and the only way one can tell it is a custom is the extra two inches of length and the “20 Practical” cartridge designation.
So, no doubt you’re asking “how does she shoot?” Is my “prototype”, first-ever 20 Practical an accurate rig? In a word, yes. Even with the standard factory stock, and light contour barrel, it can shoot 3/8″ groups. Take a look at the typical target from this rifle. This is from an 8.5-pound sporter with a very skinny fore-end and a factory trigger.
Gunsmith’s Report from Kevin Weaver The 20 Practical: Origins and Development
Editor’s NOTE: We can’t say for sure who first necked down the .223 Rem to .20 caliber and chambered a rifle for that wildcat (as opposed to the .20 Tactical). But here is an account from way back in 2006 when the Warren B first came up with the idea of a .20 Practical cartridge, complete with reamer specs.
A year ago I received a call from Warren with a great idea. Warren asked “Why couldn’t we simply neck down the .223 Remington case to 20 caliber and get basically the same performance as the 20 Tactical? This way you can forgo the expensive forming dies that are needed for the 20 Tactical.” The idea made perfect sense to me, and I saw no major technical issues, so we got started on the project. I ordered a reamer from Dave Kiff at Pacific Tool & Gauge (PTG) with a .233″ neck. The .233″ neck should allow for a simple necking-down of the 223 Remington case to produce the 20 Practical in just one step. No fire-forming necessary! Furthermore, the PTG 20 Practical reamer Dave created should work with any available .223 Rem brass, commercial or military.
The first 20 Practical round was launched down range (through Warren’s Tikka) just a few months later. The brass formed as easily as expected. All one needs is a Redding type “S” bushing die with a .230 bushing and with just one step I had a .20 caliber case ready to shoot. Warren is brilliant. [Editor’s Note: We concur. For more details on Warren’s case-forming methods and his tips for adapting .223 Rem dies, read the technical sections further down the page.]
It would be almost six months later until I got around to building a dedicated test rifle chambered for the 20 Practical. I used a Remington 722 action, Remington synthetic semi-varmint stock, and a 24″ Douglas stainless steel XX 12-twist barrel. I formed and loaded about 30 cases using Remington brass in about 20 minutes. I used a .223 Rem seating die to seat the 20 Practical bullets. The .223 seating stem seated the small 20-Cal bullets just fine. The first loads sent the 40gr Hornady V-Max bullets down range at a modest 3500 FPS. I did not shoot for groups. I just wanted to use this load to sight in the rifle and break in the barrel. Load development was painless–I used reduced .223 Rem loads for 40gr bullets and worked up from there. In the table below are some of my preferred loads as well as Warren’s favorite recipes for his 20 Practical.
Bullet Wt.
Powder
Charge Wt.
Velocity FPS
Comments
32GR
H4198
24.1
4025
Warren’s lighter gopher load
32GR
AA2460
27.8
4154
Warren’s coyote/prairie dog load
32GR
N133
26.0
4183
Coyote/PD load, clean burn
33GR
H4198
26.0
4322
Hot Load. Use with Caution!
33GR
N133
27.0
4255
Kevin: 0.388” 5 shot group
40GR
H335
25.0
3583
Kevin’s barrel break-in load
40GR
H4198
24.0
3907
Hodgdon “Extreme” Powder
40GR
IMR4895
26.0
3883
Kevin: 0.288″ 5-shot group
40GR
N133
25.0
3959
Kevin: 0.227″ 5-shot group
Warren’s Load Notes: My pet loads are all with IMI cases, 32gr Hornady V-Maxs, and Fed 205 primers (not match). These are the most accurate loads in my rifle so far. I haven’t even bothered with the 40s as I have the 20 PPC and 20 BR for those heavier bullets. I prefer the lighter bullets in the 20 Practical because I wanted to keep speed up and recoil down in this sporter-weight predator rifle. Also, the 32gr V-Max is exceptionally accurate and explosive. I like N133 the best as it burns so clean. IMI cases are tough and well-made.
Kevin’s Load Notes: I used Remington 223 cases, Hornady V-Max bullets, and Remington 6 1/2 primers to develop the above loads. CAUTION: all loads, both Warren’s and mine, should be reduced 20% when starting load development in your rifle. All load data should be used with caution. Always start with reduced loads first and make sure they are safe in each of your guns before proceeding to the high test loads listed. Since Weaver Rifles has no control over your choice of components, guns, or actual loadings, neither Weaver Rifles nor the various firearms and components manufacturers assume any responsibility for the use of this data.
Comparing the 20 Practical and 20 Tactical
Kevin tells us: “The 20 Practical and the 20 Tactical are almost identical cartridges. There are only slight differences in case Outside Diameter, shoulder angle, and case body length. The neck length on the 20 Tactical is a bit longer, but there is still plenty of neck on the 20 Practical to grip the popular bullets, such as the 32gr V-Max. Here are some specs:
Cartridge
Bolt face to shoulder
Shoulder O.D.
Shoulder Angle
Total length
20 Tactical
1.5232″
.360
30°
1.755″
20 Practical
1.5778″
.3553
23°
1.760″
Both the 20 Tactical and the 20 Practical are fine .20 caliber cartridges. At present, the 20 Tactical is the more popular of the two because it has had more publicity. However, my favorite would be the 20 Practical. Warren’s 20 Practical gives the SAME performance as the 20 Tactical without fire-forming, or having to buy expensive forming dies. So with the 20 Practical you do less work, you shell out a lot less money, yet you give up nothing in performance. What’s not to like? To create 20 Practical cases, just buy a .223 Rem Redding Type “S” Bushing Die set with a .230 or .228 bushing and have fun with this great little cartridge.”
Shoot 101 Quiz
How much of an expert are you when it comes to firearms and ballistics? Test your knowledge with this interactive test. Vista Outdoor, parent of CCI, Federal, Bushnell, RCBS and other brands, has a media campaign called Shoot 101, which provides “how to” information about shooting, optics, and outdoor gear. There were a variety of interactive offerings that let you test your knowledge.
On the Shoot 101 website, you’ll find a Ballistics Quiz. The questions are pretty basic, but it’s still fun to see if you get all the answers correct.
You don’t need a lot of technical knowledge. Roughly a third of the questions are about projectile types and bullet construction. Note, on some platforms the layout doesn’t show all FOUR possible answers. So, for each question, be sure to scroll down to see all FOUR choices. REPEAT: Scroll down to see ALL answers!
Photo courtesy NRA MuseumClick Photo to View Larger Image
With today’s plastic-framed Glocks and Keltecs, aesthetics have been sacrificed on the altar of functionality. Not so in the early 20th century — in that period, the best firearm designers created guns that looked as good as they worked. One example is the classic Colt Woodsman. This design came from the legendary John Moses Browning and was later refined by Colt before the pistol’s introduction in 1915. The Colt Woodsman’s frame design evolved over time in three distinct series: Series One 1915–1947, Series Two 1947–1955, and Series Three 1955–1977. Shown above is a stunning Carbonia-blued and engraved Third Series model with ivory grips.
Engraved Colt Woodsman from NRA Museum In the NRA Museum’s Robert E. Petersen Gallery are many fine engraved arms. This Colt Woodsman .22 pistol is one of the Third Series guns that were made until 1977. Heavy barrels in either 4.5 or 6 inch lengths were offered in this variation. The Museum’s staff says: “We think the poised golden rattlesnake near the serial number is the [best] embellishment without putting down in any way the ivory grip panels or gold outline inlays.”
You can see this lovely Colt and countless other fine firearms at the NRA Museum in Fairfax, Virginia. The Museum is open every day from 9:30 am to 5:00 pm, and admission is free.
The Colt Woodsman was made in many variations, with different barrel lengths and contours and finishes. Here is a Colt Woodsman Third Series Match Target with 6″ Blued frame and slab barrel. Photo from Sam Lisker’s ColtAutos.com.
Here is a Colt Woodsman First Series Match Target with 6.5″ undercut slab match barrel and basic blued finish. Photo from Heritage Auctions.
Here is a Colt Woodsman Bullseye Match Target Pistol (6.5″ barrel) with blued finish and early factory “elephant ear” stocks with Colt medallions. This was owned by Philip Judd, an avid marksman who was 1952 Camp Perry Champion in the 500-yard .30-06 rifle competition. Photo from Sam Lisker’s ColtAutos.com.
One of the great thing about shooting is that marksmanship is one of the few sports where physically-challenged persons can compete at the highest level — with some provisions for wheelchair access and mobility. For example, in the world of F-Class competition, Matt Schwartzkopf is one of the best in the nation. Matt, a rangemaster at Ben Avery in Arizona, is a double amputee (below the knee). He hasn’t let that challenge stop him. He has been a Top-10 finisher at major F-Class matches, and was chosen to shoot with F-TR Team USA.
F-TR Team USA member Matt Schwartzkopf is a double amputee below the knee, having had his lower legs removed due to a birth defect. That hasn’t held him back. Matt is an inspiration to us all. He told us: “This condition has not held me back from anything.” Jokingly, he added, “I may not have ‘a leg to stand on’, but that doesn’t mean I can’t still shoot 10s and Xs at 1000.” Matt is living proof that competitive shooting is a sport for all individuals — young and old, able-bodied and physically challenged.
Matt isn’t just a talented shooter — he runs range operations at Ben Avery in Arizona. During a major match, Matt can be seen supervising the firing line, organizing pit crews, and posting match results.
New USA Nationwide Adventure Database for Adaptive Shooters
Here’s a great new opportunity for shooters and sportsmen with physical limitations. The NRA has created a nationwide database of hunting and fishing adventures for individuals with disabilities. There are programs throughout the country with 45+ organizations such as Buckmasters, Freedom Hunters, Hope Outdoors, Hunting with Heroes, and Safari Club International.
“Venturing into the outdoors has long been acknowledged as healing for the body and soul”, said NRA National Adaptive Shooting Programs Manager Dr. Joe Logar, PT, DPT. “These benefits can be even more profound for someone experiencing an illness, injury, or disability.”
NRA’s Hunter Services and Adaptive Shooting Programs have maintained a list of organizations offering people with disabilities outdoor opportunities. Now available in a searchable database, any adaptive shooter can easily choose from adventures such as guided whitetail hunts, chartered fishing trips, and accessible hiking trails anywhere across the country. To find a program, visit the NRA Adaptive Shooting Program’s Hunting/Fishing Trip Database.
NRA Resources for Adaptive Shooting Events
The NRA Adaptive Shooting Program also provides information for organizations planning an event to include person with disabilities. Events may be organized by veterans’ groups, rehabilitation facilities, and gun clubs. For more information visit AdaptiveShooting.NRA.org.
Adaptive Shooting Programs in the United Kingdom
Across the pond, the National Rifle Association of the United Kingdom (NRAUK) also has adaptive shooting programs. The NRA.ORG.UK website has a wealth of information for disabled shooters.
The NRAUK states: “There are many different types of target shooting available for people to try in Great Britain. Some of them are readily accessible to disabled people, others less so. Also, shooting clubs and facilities do not all cater for every discipline; some only offer one, whilst larger complexes can cater for many of them. The only place in the country where almost all disciplines can be tried is Bisley Camp in Surrey. Access to the outdoor ranges is being improved all the time, although most are already accessible.
If the disciplines that you particularly fancy are not suitable for your type of disability at the moment, or are not currently available in your area, do not give up hope! The key skills for target shooting are very similar for all disciplines, so you could start with a different but similar option, learn those key skills, and take up your first choice when it is available to you.”
Making Ranges Suitable for Disabled Shooters
The Summer 2019 issue of NRA Club Connections magazine has a feature on Adaptive Shooting. This article explains how range owners can make their lines of fire more accessible with the addition of a simple mat.
Three near-equal-weight 7mm bullets with different shapes and bearing surface.
This article, from the USAMU Facebook Page, concerns reloading safety. In the relentless quest for more speed and flatter ballistics, some hand-loaders load way too hot, running charges that exceed safe pressure levels. Hint: If you need a mallet to open your bolt, chances are your load is too hot. Stay within safe margins — your equipment will last longer, and you won’t risk an injury caused by over-pressure. In this article, the USAMU explains that you need to account for bullet shape, diameter, and bearing surface when working up a load. Don’t assume that a load which is safe for one bullet will be safe for another even if both bullets are exactly the same weight.
Today, we continue our handloading safety theme, focusing on not inadvertently exceeding the boundaries of known, safe data. Bullet manufacturers’ loading manuals often display three, four, or more similar-weight bullets grouped together with one set of load recipes. The manufacturer has tested these bullets and developed safe data for that group. However, seeing data in this format can tempt loaders — especially new ones — to think that ALL bullets of a given weight and caliber can interchangeably use the same load data. Actually, not so much.
The researchers ensure their data is safe with the bullet yielding the highest pressure. Thus, all others in that group should produce equal or less pressure, and they are safe using this data.
However, bullet designs include many variables such as different bearing surface lengths, hardness, and even slight variations in diameter. In fact, diameters can occasionally range up to 0.001″ by design. Thus, choosing untested bullets of the same weight and caliber, and using them with data not developed for them can yield excess pressures.
This is only one of the countless reasons not to begin at or very near the highest pressure loads during load development. Always begin at the starting load and look for pressure signs as one increases powder charges.
Bullet Bearing Surface and Pressure
Bullet bearing surface length (BSL) is often overlooked when considering maximum safe powder charges and pressures. In Photo 1, note the differences in the bullets’ appearance. All three are 7 mm, and their maximum weight difference is just five grains. Yet, the traditional round nose, flat base design on the left appears to have much more BSL than the sleeker match bullets. All things being equal, based on appearance, the RN/FB bullet seems likely to reach maximum pressure with significantly less powder than the other two designs.
TECH TIP: Bullets of the same weight (and caliber) can generate very different pressure levels due to variances in Bearing Surface Length (BSL).
Bullet 1 (L-R), the RN/FB, has a very slight taper and only reaches its full diameter (0.284 inch) very near the cannelure. This taper is often seen on similar bullets; it helps reduce pressures with good accuracy. The calculated BSL of Bullet 1 was ~0.324″. The BSL of Bullet 2, in the center, was ~0.430″, and Bullet 3’s was ~ 0.463″. Obviously, bullets can be visually deceiving as to BSL!
Some might be tempted to use a bullet ogive comparator (or two) to measure bullets’ true BSL for comparison’s sake. Unfortunately, comparators don’t typically measure maximum bullet diameter and this approach can be deluding.
Note: Due to time constraints, the writer used an approximate, direct measurement approach to assess the bullets’ different BSLs. While fairly repeatable, the results were far from ballistics engineer-grade. Still, they are adequate for this example.
Photo 2: The Perils of Measuring Bearing Surface Length with Comparators
In Photo 2, two 7mm comparators have been installed on a dial caliper in an attempt to measure BSL. Using this approach, the BSLs differed sharply from the original [measurements]. The comparator-measured Bullet 1 BSL was 0.694” vs. 0.324” (original), Bullet 2 was 0.601” (comparator) vs. 0.430” (original), and Bullet 3 (shown in Photo 2) was 0.602” (comparator) vs. 0.463” (original). [Editor’s comment — Note the very large difference for Bullet 1, masking the fact that the true full diameter on this bullet starts very far back. You can use comparators on calipers, but be aware that this method may give you deceptive reading — we’ve seen variances just by reversing the comparators on the calipers, because the comparators, typically, are not perfectly round, nor are they machined to precision tolerances.]
Thanks to the U.S. Army Marksmanship Unit for allowing the reprint of this article.
20 Practical Ultimate Varminter
The .300 AAC Blackout aka “300 BLK”, is a compact 30-caliber cartridge designed to work in AR-15 rifles. It has a shorter cartridge case to accommodate the bigger 30-caliber bullet while still fitting in a standard AR-15 magazine. Unfortunately, that’s the danger. A careless shooter can toss a .300 Blackout cartridge in with .223 Rem rounds without noting. And because the case-head size is the same as the .223 Rem (5.56×45) the rifle’s bolt assembly will happily chamber and fire the .300 BLK round. Problem is, that forces a .308 diameter bullet down an undersized .223-caliber bore. Not good!
About Jesse Kaufmann, Master Engraver
After building my 20 PPC, I wanted to do another .20 caliber, this time a repeater for predator hunting that could also serve as a gopher/prairie dog rifle. I wanted to use a Tikka M595 stainless sporter I had. This rifle is the ultimate repeater with an extremely smooth-feeding cycle from its single-column magazine. Since the Tikka was a .223 Remington from the factory, I first looked at possible case designs that would fit the magazine. The 204 Ruger was a very new round at the time and brass was scarce. I also didn’t care for the overly long case design or the standard throat dimensions of the cartridge. I then looked at the 20 Tactical. It was a nice cartridge but I didn’t like the fact that (at the time) an ordinary two-die Tac 20 set with just a plain full-length die and standard seater were $150. Not only did the costs bother me, but I was accustomed to using a Redding die set featuring a body die, a Type-S bushing neck die, and a Competition seater. To be honest, I also didn’t care for the 20 Tactical’s name–there is absolutely nothing tactical about the cartridge. I didn’t want to adopt a new cartridge based on what I perceived to be a marketing gimmick (that “tactical” title). 
Simply Neck Down .223 Rem to Make a 20-223 Wildcat
I chose Kevin Weaver at 
Project Componentry
Test Report–How’s It Shoot?
Comparing the 20 Practical and 20 Tactical
Shoot 101 Quiz
In the NRA Museum’s Robert E. Petersen Gallery are many fine engraved arms. This Colt Woodsman .22 pistol is one of the Third Series guns that were made until 1977. Heavy barrels in either 4.5 or 6 inch lengths were offered in this variation. The Museum’s staff says: “We think the poised golden rattlesnake near the serial number is the [best] embellishment without putting down in any way the ivory grip panels or gold outline inlays.”
F-TR Team USA member Matt Schwartzkopf is a double amputee below the knee, having had his lower legs removed due to a birth defect. That hasn’t held him back. Matt is an inspiration to us all. He told us: “This condition has not held me back from anything.” Jokingly, he added, “I may not have ‘a leg to stand on’, but that doesn’t mean I can’t still shoot 10s and Xs at 1000.” Matt is living proof that competitive shooting is a sport for all individuals — young and old, able-bodied and physically challenged.
