While many of our readers are caught in the wicked cold-spell hitting the North Central states, take heart — spring is right around the corner. That means folks will be getting ready for varmint safaris. Here’s a story that may help you choose a cartridge for your next varmint rifle.
For many years, Ken Lunde journeyed to South Dakota to visit with his father, and do a little varmint hunting. This article features Ken’s Cooper Model 21 Montana Varminter chambered in .204 Ruger. During past varminting holidays in South Dakota, Ken had a chance to try the speedy .204 against his “old reliable” .223. He came to favor the .204 for its accuracy, flat trajectory, and superior performance in the wind. Ken told us: “I love my .223, but the .204 has the edge for Dog-Town duty.”
I’ve been a big fan of Cooper Arms rifles ever since my dad introduced them to me a few years ago. I prefer Cooper Arms rifles over others because they perform as they should out-of-the-box, and have outstanding workmanship and beauty. You get form and function. You don’t need to choose one over the other. For the price one pays, Cooper Arms rifles are a great bargain. I mount a quality scope, usually a higher-end Leupold with a 40mm objective, go through barrel break-in, and they always perform extraordinarily well. I should state that all of my rifle shooting is geared towards hunting. In other words, any shooting I do on paper is treated as preparation for using the same rifle for hunting, whether it’s for varmints such as prairie dogs, or for larger game.
Cooper Varmint Rifles–Components and Variations
The featured rifle is a Cooper Arms M21 Montana Varminter (aka “MTV”) chambered in .204 Ruger. It has a 24″ varmint-taper stainless steel barrel with a 1 in 12-inch twist. This twist rate seems to be typical of .204 Ruger barrels from other manufacturers. The stock is AA+ grade Claro Walnut, and has the varmint fore-end, “Buick” vents, and steel grip cap that are standard on the Montana Varminter configuration. Among Cooper’s three wood-stocked varmint rifle configurations — Varminter, Montana Varminter, and Varmint Extreme — I prefer the Montana Varminter as it seems to be the best balance of value versus features. Plus, I like the “Buick” vents. They’re very pleasing, at least to my eyes. Maybe that’s why I own seven of them, in M21 and M22 actions, and in a variety of calibers. [Editor: Ken’s father has a near-identical .204 Ruger Cooper, with consecutive serial number.]
For this rifle, I decided to mount a Leupold VX-III 6.5-20×40 LR scope with the Varmint Hunter reticle. The rifle came with Leupold STD bases in Matte finish, and I used Leupold 30mm STD rings in Medium height and Matte finish. I took the time to align the bottom rings on the bases, and properly lapped them. Other than mounting the scope, no custom work was done, because none was necessary. The trigger is superb out-of-the-box, which is typical of Cooper rifles.
Load Development and Accuracy I first tried factory ammo, loaded with Hornady 32gr and 40gr V-Max. The 32gr load shot the best—five-shot groups were slightly larger than a half-inch at 100 yards. My dad heard that Alliant Reloder 10X was a good powder for this cartridge, and he worked up a load using the Sierra 32gr BlitzKing bullet. He found that 26.5 grains was the right amount for his rifle. Considering that my rifle was probably made on the same day, having a consecutive serial number, I decided to try my dad’s load, along with a half-grain up and down, meaning 26, 26.5, and 27 grains of powder. I, too, found that my rifle prefers 26.5 grains of RL 10X. With this load, I’ve been able to shoot consistent quarter-inch, five-shot groups at 100 yards. Cartridge OAL is 2.353″, or 1.990″ measured from the ogive.
I am using Winchester brass, Federal 205M primers, Alliant Reloder 10X powder, and Sierra 32gr BlitzKing bullets. I use Forster dies, and load with a Forster Co-Axial single-stage press. Here are two typical targets. As you can see, this .204 can shoot.
Cartridge Smack-Down — .204 Ruger vs. .223 Remington
Ken made these comments when he first tested his .204 Ruger vs. his trusty (and very accurate) .223 Remington: “I brought along two rifles. The first was my ‘proven’ varmint rifle, the one chambered in .223 Rem. It has stunning wood, and clearly escaped the factory with AAA grade Claro Walnut. That rifle also shoots consistent five-shot, quarter-inch groups at 100 yards. For the .223, my preferred load uses Winchester brass, Federal 205M primers, Hornady 40gr V-Max bullets (non-moly), and 26.2gr of Vihtavuori N133 powder.
I found that I very much enjoyed shooting the .204 Ruger rifle, which explains why I used only the .204 Ruger during the second trip, although I also brought along the .223. Why did I favor the .204? Well, those little 32gr bullets really zing out of the barrel, with a very flat trajectory, like a .22-250. And, to my surprise, they buck the wind very well, perhaps even better than .223. While I am no ballistics expert, I think that this may be due to its high velocity, clearly over 4,000 fps.”
This week we return to our 6mmBR.com roots with an article on David Bergen’s slick 24″ Drop-Port Viper. This was one of the first 6BR rifles we featured. David, who hails from Belgium, developed this project over many months, and the gun proved to be a true tack-driver, with the ability to group in the Ones, even with the heavy boat-tail bullets. David talks about the build and his reloading methods while action designer Jerry Stiller provides technical insights into the design features of his Viper action.
It was a long journey looking for the perfect custom action to build my new rifle. I searched the internet and visited various forums. I even re-read all my old Precision Shooting magazines to find what I was looking for. One evening I conferred by telephone with Mr. Jerry Stiller of Stiller’s Actions in Texas. He patiently answered all my questions. That moment I decided that I wanted a Viper Drop-Port action. [Editor: Sadly, the Viper Drop-Port is no longer in production.]
Component Selection At the heart of this gun is a Viper action. This medium-sized action can handle cartridges from a small BR up to a 6.5-284. (Stiller’s smaller Cobra action is for PPC and BRs only.) The Viper is milled from aluminum. This keeps weight down while still allowing Vipers to have a large bedding surface like a Stolle Panda.
At first I was a bit sceptical about the aluminum’s toughness, but Mr. Stiller informed me that the action is the perfect marriage between steel and aluminum. The bolt is hard-chromed and the action body is hard-anodized. This gives it two surfaces that resist wear and make an already-slick action even slicker. Stainless steel is used for all the heavy-stress points including barrel threads, locking lugs, and the rear camming surface. The bolt is made of steel with a very light, small-diameter firing pin to prevent primer piercing with heavy loads. Everything is held very concentric to the bore axis. The Viper is a very smooth action mainly because the design and the precise machining of the camming surfaces. Combined with optimal bolt-lift timing, this gives a smooth action. Stiller also keeps the tolerances very tight on these actions, though they are as fast-handling as any you can buy. The trigger is of course a Jewell BR model.
The rifle is chambered in 6mmBR Norma, my favorite cartridge. I have two HV-contour Shilen match barrels, both with 1 in 8″ twists and finished lengths of 24 inches. The chamber has a .266″ neck so neck-turning is necessary. Freebore is .060″ but combined with a 1.5° throat angle this lets me seat a wide range of bullets from 58 grains up to 107 grains.
The stock is a McMillan Edge with moulded-in gray and black marble swirl. I specified 60% black and dark and light gray both at 20%. I went with the Edge stock because I was always pleased with McMillan products and because it had a very low center of gravity. I wanted the barrels very low in the stock because I think it makes the gun track better.
Details of the Drop-Port–with VIDEO! The visible part of the Drop-Port is a cartridge-sized cut-out in the floor of the action. This tapers into a funnel shape that lets the spent case fall nose-first through a single hole in the underside of the stock. The Drop-Port is carefully sized so that empty brass will fall through from gravity but a loaded round won’t. I’ve found that getting a BR case to eject 100% reliably in a standard action is not easy. The round is short and fat so it clears the chamber too early and the ejector pushes the cases out the extractor too fast. This can result in an empty case sitting in your action, no longer held by the extractor. Needless to say, this can slow you down during a stressful competition. When you get a Drop-Port you can forget all those problems.
Failure to eject is NOT going to happen with a Drop-Port. The system just works every time, and it’s FAST. Right-Click on the Media Player image and “Save As” to download a video (6.9 megs) showing me cycling the action during live fire.
One smart feature of the Drop-Port is the extractor location. A Remington extractor is located at the bottom of the bolt. This way the case is supported by the extractor until the front of the case lines up with the cut-out in the action. At that moment the front of the case tilts down and the rim slips out of the extractor. In the stock there is a funnel which collects the case. The case drops out of the rifle through a single small hole in front of the trigger guard.
Building an Accurate Load Tools and Recipes I start with new Lapua cases and after full-length sizing I trim them with a Wilson trimmer. Then I turn the necks for a .264″ neck diameter with a Lapua 105 seated in the brass. After fire-forming I use a “semi-custom” Harrell’s full-length sizing die with bushing. I use a .262 bushing with the moly-coated bullets. This Harrell’s die is the best I ever used — it gives very low run out. [Editor’s Note: Harrell’s stocks a number of dies with various internal dimensions. You send them three fire-formed cases and they’ll pick out a die that fits your brass the best. The cost is very reasonable.] Overall the excellent concentricity I’m seeing with my rounds is a combination of a superb chambering job, a neck-turned Lapua case and the Harrell’s sizing die. The die is supplied with a brass bushing that allows you to measure the amount of sizing you are doing.
For seating I use both a Wilson inline seater (hand die) and a Forster seating die that threads into a press. The latter gets the most use because I find it easier to use. Run out with both is around 0.001″ or better measured on the bullet.
Load development was very easy. I started with Varget and all loads … shot well. Vihtavuori N150 also shot very well with… moly-coated Lapua 105s. To my delight, the light bullets are also shooting very well in the 1:8″ twist. Nosler Ballistic Tips are giving very good results with a case full of N140. I’ve also tried N150, N540 and AA 2520. For all loads I’ve been using CCI BR4. Bullets are seated well into the lands with square marks showing. This gives an overall length around 59 mm (2.32″), depending on the bullet used.
Shooting the Rifle–How It Performs The rifle is very easy to shoot and it is very accurate, but it had some drawbacks in the beginning. First there is the stock. It is designed for bench shooting and on a table it does this very well. I use a Caldwell front rest and a Protektor rear bag. When shooting prone I’ll also use the rest but the cheek weld is not ideal (the Edge was optimized for free recoil shooting from the bench). The rings that are supplied with the action are rather high. I looked around and found some that were lower. This made shooting easier, but I still wasn’t satisfied. The gun was a bit nose-heavy. There is a weight system built into the stock, but it wasn’t enough to bring the gun in balance. I like the balance point to be just in front of the receiver ring. So I cut the rear off the stock and put in a larger tube and turned some weights to put in it. I also made up an aluminum butt plate. Then I installed a Harrell’s brake to cut recoil to a minimum. With these modifications, the rifle is now shooting the way I want. I think the Edge stock is a very good design for benchrest shooting but for prone shooting it has some shortcomings. I think the MBR is a better stock for shooting prone.
Muzzle Brake–Less Recoil, Same Excellent Accuracy After testing the barrel with different loads, I decided to put a brake on one barrel. Most of my guns are muzzle-braked and since I had two virtually identical barrels, I put a Harrell’s brake on one. The barrel had to be threaded to mount the brake and here I was a little concerned–I remembered the advice to “never mess with a winner”. The un-braked barrel was ultra-accurate and I was curious whether the process of fitting the brake might affect the accuracy.
Thankfully, my worries were unfounded. My targets showed no loss of accuracy — there was no evidence that the brake had caused any changes (except as to recoil). I have wondered though, perhaps the brake makes the gun more shootable and in that way compensates for some small accuracy loss that may be there? Whatever the case, the gun shoots just as tight as before, except now it’s a lot more user-friendly with less muzzle hop and less “push” on recoil.
This Rifle Literally Shoots Bug-Holes
And now I come to the end of the story. One day when testing the rifle at 100 meters (with brake installed), I spied a fly on the target. Well now, I thought, here is an interesting “precision shooting” challenge. I put the crosshair on the fly, squeezed the trigger, and the fly was history.
One shot, one kill. Now THAT is impressive precision. If you look closely you’ll see what’s left of Mr. Fly around the bullet hole. Or “bug-hole” as you Americans would say. This kind of performance is a real confidence-booster for the trigger-puller, let me tell you.
The Drop-Port — Simple Yet Advanced
Jerry Stiller tells us: “The drop-port ejects the case out the bottom of the action using only gravity. No ejector plunger is required so the system is as foolproof as anything can be. (A normal spring-loaded ejector creates an uneven load on one side of the case head.) Unlike other ejection systems, micro-ports etc., a Drop-Port doesn’t require tuning or adjusting, and just works. Many top shooters tell us they can cycle rounds faster with a Drop-Port action than with any other design.”
“The engineering of the Viper reflects some key design objectives. I wanted it to be able to fit standard commercially available stocks and have a barrel fit-up that was well known in the industry. I liked the idea of the larger bedding area and higher stiffness of the aluminum actions, so I chose the Panda footprint and barrel tenon for the Viper. I also made some changes to what was available at the time to make the product better. I used a smaller diameter firing pin to eliminate primer piercing, hard anodized all the aluminum parts for corrosion resistance and to make the surface hard and slick. The bolts are also coated for the same reasons.
Sinclair Internationalhas released an interesting article about Case Concentricity* and bullet “run-out”. This instructional article by Bob Kohl explains the reasons brass can exhibit poor concentricity, and why high bullet run-out can be detrimental to accuracy.
Concentricity, Bullet Alignment, and Accuracyby Bob Kohl
The purpose of loading your own ammo is to minimize all the variables that can affect accuracy and can be controlled with proper and conscientious handloading. Concentricity and bullet run-out are important when you’re loading for accuracy. Ideally, it’s important to strive to make each round the same as the one before it and the one after it. It’s a simple issue of uniformity.
The reason shooters work with tools and gauges to measure and control concentricity is simple: to make sure the bullet starts down the bore consistently in line with the bore. If the case isn’t properly concentric and the bullet isn’t properly aligned down the center of the bore, the bullet will enter the rifling inconsistently. While the bore might force the bullet to align itself with the bore (but normally it doesn’t), the bullet may be damaged or overstressed in the process – if it even it corrects itself in transit. These are issues we strive to remedy by handloading, to maintain the best standard possible for accurate ammunition.
The term “concentricity” is derived from “concentric circle”. In simple terms it’s the issue of having the outside of the cartridge in a concentric circle around the center. That goes from case head and center of the flash hole, to the tip of the bullet.
Factors Affecting Concentricity
The point of using this term is to identify a series of issues that affect accurate ammunition. Ideally this would work best with a straight-walled case; but since most rifle cartridge cases are tapered, it equates to the smallest cross section that can be measured point by point to verify the concentric circle around the center. For the examples below, I’m working with .308 Winchester ammo.
Figure 1: The cartridge.
Figure 2: Centerline axis of the case, extending from flash hole to case mouth.
The case walls have to be in perfect alignment with the center, or axis, of that case, even if it’s measured at a thousandth of an inch per segment (in a tapered case).
Figure 3: Case body in alignment with its axis, or centerline, even in a tapered case.
The case neck must also be in alignment with its axis. By not doing so you can have erratic bullet entry into the bore. The case neck wall itself should be as uniform as possible in alignment and in thickness (see the M80 7.62x51mm NATO cartridge in Figure 5) and brass can change its alignment and shape. It’s why we expand the case neck or while some folks ream the inside of the neck and then turn the outside for consistent thickness, which affects the tension on the bullet when seated.
Figure 4: Neck in alignment with center of the case axis.
Figure 5: Variations in case neck wall thickness, especially on some military brass, can cause an offset of the bullet in its alignment. This is an M80 ball round. Note the distinct difference of the neck walls.
Having a ball micrometer on hand helps, especially with military brass like 7.62x51mm in a semi-auto rifle, where there are limits as to how thin you want the neck walls to be. In the case of 7.62 ball brass you want to keep the wall to .0145″.
Figure 6: A ball micrometer like this RCBS tool (#100-010-268) can measure case neck thickness.
Turning the outside of the neck wall is important with .308 military cases regardless of whether you expand or ream the neck walls. There are several outside neck turning tools from Forster, Hornady, Sinclair, and others. I’ve been using classic Forster case trimming (#100-203-301) and neck turning (#749-012-890) tools for 40 years.
Bullet Run-Out
The cartridge, after being loaded, still needs to be in alignment with the center of the case axis. Figure 7 shows a bad example of this, a round of M80 ball. A tilted bullet is measured for what’s known as bullet “run-out”.
Figure 7: An M80 round with the bullet tilted and not aligned with the axis. This will be a flyer!
Run-out can be affected by several things: (1) improperly indexing your case while sizing, which includes not using the proper shell holder, especially while using a normal expander ball on the sizing die (it also can stretch the brass). (2) The head of a turret press can flex; and (3) improper or sloppy bullet seating. This is also relevant when it comes to using a progressive press when trying to load accuracy ammo.
Mid Tompkins came up with a simple solution for better bullet seating years ago. Seat your bullet half way into the case, back off the seater die and rotate the case 180 degrees before you finish seating the bullet. It cuts down on run-out problems, especially with military brass. You also want to gently ream the inside of the neck mouth to keep from having any brass mar the surface of the bullet jacket and make proper seating easier. A tilted bullet often means a flyer.
Figure 8: Proper alignment from the center of the case head to the tip of the bullet.
(NOTE: This links to a Web Archive version of older Sinclair Int’l article.)
*Actually some folks would say that if we are talking about things being off-center or out-of-round, we are actually talking about “eccentricity”. But the tools we use are called “Concentricity Gauges” and Concentricity is the term most commonly used when discussing this subject.
Story Tip from EdLongrange. We welcome reader submissions.
In the video below, Forum member (and F-Class ace) Erik Cortina shows how to install a Jewell Benchrest trigger into a Kelbly F-Class Panda action. You could follow the same simple procedure to install a Jewell in a standard Panda action. Kelbly’s sell both standard and long versions of the F-Class Panda action. Both versions feature integral recoil lugs in the front.
To see more detail in this “how-to” video, you can zoom it to full-screen size. Simply click the full-screen icon (4-cornered frame) just to the right of the YouTube logo in the lower right.
FREE Digital Editions of SHOT Show Daily
Below you’ll find FREE digital editions of the SHOT Show Daily. This is the publication handed out at SHOT Show. Packed with stories and photos, each edition has a special theme for the new products covered. The daily news of the 2019 Las Vegas SHOT Show is produced by Bonnier Corporation and NSSF®. These are definitely worth checking out — there are hundreds of photos of new products.
NOTE: To READ TEXT, Click Full Screen Bracket Icon at lower right of each frame: [ ]
At SHOT Show 2019, some of the most impressive new products were in the realm of scopes and electro-optics. We are seeing big companies like Leica, SIG Sauer, Swarovski, and Zeiss moving big-time into the technological marriage of microchips and lenses. With the release of the $4500 Swaro dS, a scope with no manual windage or elevation controls, we are really entering a new era in aiming systems for shooters.
Swarovski dS Rangefinder Scope with Ballistics “Brain”
Swarovski rolled out a new flagship scope this year at SHOT Show, the remarkable dS 5-25×52 P. This $4500+ wonder features a built-in laser rangefinder (like the Burris Eliminator). But there’s more — working with a smartphone App, the dS incorporates a sophisticated ballistics computer that calculates your trajectory at any distance and then displays an aim point on your reticle. It even adjusts the aim point for the wind (with data entered wirelessly via mobile device).
This really is a state-of-the-art electro-optical system. However, there are some negatives to consider. First there are no conventional elevation or windage knobs/turrets. So, if your battery dies in the field, you are SOL. (FYI that big “turret” in the middle is actually just a battery and tool holder). Secondly, all that smart calculation depends on extremely accurate BC and velocity data. If you switch ammo, and don’t have an accurate velocity or BC, you won’t get the right solution and there are no knobs to turn to fix that. The dS will give you an aim point, but it might not match your true ballistics. (NOTE: There are hidden mechanical controls for setting your zero, but these are not intended for conventional shot to shot adjustments).
High-Magnification Competition Scopes
Kahles K1050 — Central Parallax, Great Glass
Kahles scopes are now being used by many of the top shooters in PRS game. Kahles optics offer great European glass, precise controls, and some unique features. Our readers may not realize that Kahles makes an outstanding high-magnification zoom scope suitable for long-range benchrest and F-Class comptition, the Kahles K1050. This 10-50x56mm optic has a unique centrally mounted parallax control — great for lefties or guys who run a left port/right eject. The Kahles K1050 has a true 8 meters to infinity parallax adjustment range making it suitable for everything from Field Target air gun, 1000-yard competition, and long range tactical. The Kahles K1050 costs $2899.00 — that’s midway between a Vortex Golden Eagle and a 10-60x56mm March High Master (starting at $3425.00).
Sightron SIII 10-50x60mm
Sightron offers a very affordable 10-50x60mm scope in its SIII optics line. There is a special version for Field Target competition that comes with a “Big Wheel” parallax control. Field Target competitors use the Parallax control to determine target range.
ELR Scope — For 2 Miles and Beyond
March 6-60X Genesis with 400 MOA elevation
A typical premium riflescope might have 50-60 MOA of elevation. That’s enough for shooting out to 1500 yards or so with a high-BC bullet launched at 2900 fps. But for Extreme Long Range (ELR) shooting you need more elevation adjustment, and that’s where the innovative March 6-60X Genesis optic stands out. This unique optic offers a whopping 400 MOA of elevation adjustment. That ample elevation doesn’t come cheap however — the 6-60x56mm Genesis sells for $6950.00. CLICK HERE for full specifications.
Lightweight Hunting Scopes
As scopes have grown increasingly sophisticated and complex, they have also become bulkier and HEAVIER. That’s a big deal for a hunter who may be carrying a rifle, plus another 20-30 pounds of gear and food/water. The average dear hunter will be taking a shot well inside 400 yards so he doesn’t need 25X power or fancy features. He does need clarity, good low-light performance, and reliability — and LOW WEIGHT. We think a good deer hunting scope should come in under 1.5 pounds (without rings). Here are two smart hunting optics, both under 20 ounces.
Leupold VX Freedom — 12.2 ounce Weight, Simple, Affordable
The Leupold VX-Freedom 3-9x40mm weighs just 12.2 ounces and street price is under $200. It has a 4.7mm exit pupil, 60 MOA of elevation, and a 33.7 ft Field of View at 100 yards.
Zeiss 3-12x44mm Conquest — 18.2 ounce Weight, 90% Light transmission, 4X Zoom
These riflescopes were designed as a lightweight, high-performance product line for demanding hunting and shooting applications. The Zeiss 3-12x44mm Conquest delivers 90% to-the-eye light transmission, along with 70 MOA of both elevation and windage travel. This premium second focal plane scope weighs just 18.2 ounces, slightly over one pound.
Compact Spotting Scopes for Field Carry
Many shooters and hunters don’t want or need a heavy, bulky spotting scope. They need a spotter to see mirage, and to deliver more magnification than can be comfortably handheld with binoculars. For hunters, weight and overall size are key. The hunter wants a spotting scope that can be packed and carried easily. Here are two clear, sharp spotter options in a smaller format. The Leupold Gold Ring 15-30x50mm Compact Spotter is particularly well-suited to hunters and tactical shooters.
Nikon Monarch Fieldscope 60ED-A
Small but powerful — that describes the Nikon 60ED-A Monarch Fieldscope with 16-48X eyepiece. This unit delivers big spotter performance in a much smaller package. It focuses fast and showed very good sharpness though we observed the image darkens at higher magnifications. This has ED glass and Nikon’s proprietary “field flattener” lens system that enhances sharpness throughout the entire field of view.
Leupold 15-30x50mm Gold Ring Compact Spotting Scope
The affordable Leupold Gold Ring Compact Spotter offers 15-30X magnification. That’s plenty for spotting game or viewing mirage. This unit is remarkably compact and we like the simple right-side focus knob. Half the size of typical spotting scopes, this Compact Leupold spotter weighs just 21.5 ounces (1.34 pounds).
Superb Binoculars — When Cost is No Object
Leica Noctivid 8x42mm Binoculars
Our Hunting Editor Colton Reid is a Ph.D. who works with specialized electro-optical devices costing over $30,000. So he knows a few things about light waves and glass quality. When he looked through the 8×42 Leica Noctivid his comment was simple but telling: “These are the best compact binoculars I’ve ever looked through. The clarity and brightness are truly exceptional”. At nearly $2700.00, Noctivids are crazy expensive, but the quality will be worth it to some buyers.
Parting Shot — Think about the Warranty BEFORE You Buy
This patched-up Razor spotting scope was on display at the Vortex booth. We actually know the history of this particular spotter — it belonged to one of our Forum members. He sent this busted unit back to Vortex, and Vortex sent him a brand new Razor spotter. That Forum member told us: “Vortex earned a customer for life when they replaced my spotter, no questions asked. When Vortex says its warranty is ‘Unlimited, Unconditional, Lifetime’, believe it.”
Here’s a “must-read” article for .22 LR rimfire shooters. The recently-released October 2018 issue of Shooting Sports USA (SSUSA) includes a great article with data on thirty-one (31) different types of popular .22 LR rimfire ammunition. The line-up includes low-speed, standard, and Hi-Velocity types, plus choices for plinking, varminting, and target applications. Brands tested include: Aguila, American Eagle, CCI, Federal, Fiocchi, Lapua, Remington, and Winchester. The slowest ammo, CCI Quiet-22 Lead RN, clocked 727 FPS. The fastest ammo, CCI Short-Range Green Lead-Free HP, ran 1735 FPS, more than twice as fast as the Quiet-22.
For each ammo type, SSUSA lists the bullet weight, velocity (FPS), and average of two, 5-shot groups at fifty yards. The most accurate ammo was Lapua Center-X LRN, with a 0.37″ average 50-yard group size. Second best was Lapua X-ACT LRN at 0.42″. Ammo was tested from a bench with a Cooper Model 57-M rifle fitted with 3-9x33mm Leupold VX-2 scope. The ammo offerings were grouped into three categories: (1) Varmints/Small Game; (2) Target; and (3) Plinking. (See ammo tables below.)
Click for larger page-view.
Different types of .22 LR (Long Rifle) rimfire ammo have different applications. Subsonic ammo, typically, is best for 25m to 50m target work with precision rimfire rigs. Hi-Velocity .22 LR ammo provides a flatter trajectory for longer ranges. SSUSA explains: “The array of .22 LR loads… turns a person’s head every which way. Subsonic target loads are the key to decisive accuracy on targets, while hyper-velocity cartridges provide striking bullet expansion on small varmints. In between, standard and high-velocity .22 LRs are loadrf with a variety of bullet weights and styles for everything from small-game hunting to plinking[.]” READ Full SSUSA .22 LR Rimfire Ammo Story.
CMP Competition Rulebooks that will govern all CMP sponsored and sanctioned competitions in 2019 have now been approved by the CMP Board’s Rules Committee and posted on the CMP website. Significant changes in this year’s rulebooks include dividing the former Service Rifle and Pistol Rulebook into two separate rulebooks, the establishment of a new program to give persons with disabilities an opportunity to earn Distinguished Badges, and the creation of separate unlimited classes for Modern Military Rifles and Rimfire Sporter Rifles. 2019 CMP Competition Rulebooks are effective immediately and can be downloaded from the CMP website by using the following links:
CMP Games Competition Rules, governs As-Issued Military Rifle, Modern Military Rifle, Vintage Sniper Rifle Team Match, Rimfire Sporter Rifle and As-Issued Pistol
LINK: http://thecmp.org/wp-content/uploads/CMPGamesRules.pdf
Here are key 2019 CMP Rule Change Highlights. For a more complete list of important changes, read the official CMP 2019 Rule Change Summary.
New Distinguished Marksman Program For Shooters with Disabilities
A major new CMP program being introduced in 2019 is the Distinguished Marksman Badge Program for competitors with medical or physical limitations or disabilities. To implement this program, the CMP is establishing a new Distinguished Badge called the Distinguished Marksman Badge. Any rifle or pistol competitor with a disability or limitation that previously prevented them from fully meeting rules requirements for earning EIC credit points is invited to apply to the CMP for a “Distinguished Marksman Authorization” (contact acantu@thecmp.org or phone 419-635-2141, ext. 602).
Electronic Scoring Target Rules
New electronic target (EST) installations at the Talladega Marksmanship Park and CMP Travel Games necessitated special rules to govern irregular shot entries that may appear on electronic targets. CMP EST rules were updated this year, based on EST experiences. CMP Rules now define EST complaint resolution processes for: 1) a protested shot value; 2) a missing slow-fire shot; 3) a missing rapid-fire shot; 4) an extra slow-fire shot and 5) an extra rapid-fire shot.
Highpower Rifle Rule Changes
Separate Highpower Rifle Rulebook
Until this year Service Rifle and Pistol events all had the same rulebook. As a result, rules frequently skipped from rifle to pistol and back and this often caused confusion. Now there are two separate rulebooks, one for Highpower Rifle and a separate rulebook for Pistol.
Long Range Rifle Classification System
The CMP brought Long Range Rifle competitions at 800, 900 and 1000 years back to Camp Perry and the National Matches in 2018. This successful new program attracted 182 competitors who made 454 event entries. This year’s change features the introduction of a Long Range Rifle classification system that will expand the CMP Highpower Rifle classification system implemented in 2018 (HP Rule 3.11.4).
National Matches Program
The 2018 National Matches Program that introduced CMP Cup Matches, Long Range Rifle Matches and the Roosevelt Match (for U.S. Krag and M1903 rifles) will be unchanged in 2019. All of the highpower rifle events that were on the 2018 National Matches Program are already in this year’s National Matches Schedule. If you have not done so already, download the 2019 National Matches Calendar.
In 2019, the “Standard Modern Military Rifle” will return to its original rules for AR-type rifles that featured a 7.5 lbs maximum weight and metallic sights only. In 2019, AR-type rifles that weigh more than 7.5 lbs or that have optical sights will compete in a separate Unlimited Class. In addition, Modern Military Rifles with optical sights will now all be in the Unlimited Modern Military Rifle Class. Free-floating handguards will be allowed in both the Unlimited and Standard Modern Military Rifle Classes.
CMP Games Rule Changes
The CMP Games Rulebook that governs As-Issued Military Rifle and Pistol events as well as Rimfire Sporter Matches has some of the most significant 2019 rule changes. These include the establishment of an Unlimited Modern Military Rifle Class and the expansion of the Rimfire Sporter Tactical Class to become a combined Tactical and Unlimited Class (TU-Class). Changes in this rulebook are.
Modern Military Rifle
For 2019, after much debate and inputs from many, the CMP decided to return the first Modern Military Rifle Class to its original rules as a Standard Modern Military Rifle and to establish a separate Unlimited Modern Military Rifle Class. The Standard Modern Military Rifle will go back to its original 7.5 lbs. weight limit for AR-type rifles and 9.0 lbs. for M1As. Standard Modern Military Rifles will be restricted to metallic sights only. Rifles that weigh more than 7.5 lbs. or 9.0 lbs. or that have optical sights will now be in the Unlimited Modern Military Rifle Class. Restrictions against float tubes or metallic sights with finer adjustments were removed for both classes.
As-Issued Military Rifle Events
The core of the CMP As-Issued Military Rifle program is the ever-popular Garand-Springfield-Vintage Military Rifle triad. Those events and the Carbine Match, which accompanies them on many match programs, remain unchanged.
The digital archives of Shooting Sports USA magazine (SSUSA) features an Expert Forum on Wind Reading. This outstanding article on wind reading starts off with a section by ballistics guru Bryan Litz, author of Applied Ballistics for Long-Range Shooting. Then four of the greatest American shooters in history share their personal wind wisdom. Lanny Basham (Olympic Gold Medalist, author, Winning in the Wind), Nancy Tompkins (Past National HP Champion, author, Prone and Long-Range Rifle Shooting), David Tubb (11-Time Camp Perry National Champion), and Lones Wigger (Olympic Hall of Fame) all offer practical wind-reading lessons learned during their shooting careers.
Whether you shoot paper at Perry or prairie dogs in the Dakotas, this is a certified “must-read” resource on reading the wind. Here is a sample selection from the article:
Shooting Sports USA magazine (SSUSA) has a modern, mobile-friendly website with tons of great content. Log on to www.ssusa.org. There you’ll find current news stories as well as popular articles from the SSUSA archives. The SSUSA website also includes match reports, gear reviews, reloading advice, plus expert marksmanship tips from the USAMU.
A customer of well-known gunsmith (and Hall-of-Fame shooter) Thomas “Speedy” Gonzalez recently asked Speedy about bedding compounds. Speedy offered some interesting advice based on long-term testing of various materials. Speedy favors Marine-Tex because it is very stable over time, while other materials can shrink up to 6% dimensionally. A good bedding job should be a perfect fit to your barreled action. If the bedding material shrinks over time, that is NOT a good thing….
Speedy’s customer asked: “I know you’re not a Devcon man in regards to bedding compounds but I respect your input in such matters and my question is this in regard to aluminum actions. If Devcon was considered, for an aluminum action, would you prefer aluminum compound formula or steel formula? I personally prefer Devcon steel and Marine-Tex for steel receivers but my experience with aluminum is limited. Also do you have a release agent preference that works better with aluminum?”
Speedy answered: “My only preference of one epoxy over another is their stability over time. My buddy who works for the Texas State Weights and Measures Department had me cast several of the most common types of epoxies used for bedding into 1.000″ machined blocks. After one year of being kept in a controlled climate and measured for shrinkage monthly, the Marine Tex shrunk only 1/10th of 1% (i.e. 0.1%) whereas almost all the others (including Devcon Steel formula, Devcon Aluminum formula…) shrunk 3% to 6%. The only other compounds that matched the Marine Tex were Araldite 1253 and Araldite 2014, with the latter being quite expensive for daily use.”
Speedy added: “The Marine Tex Grey has no atomized metal in its makeup even though it appears that it does. This can be proven by the use of a strong neodymium magnet. What is humorous to me is that people don’t like aluminum yet will bed their actions atop aluminum pillars that have twice the coefficient of expansion (COE) of steel. Like Devcon, it is what people have always done and used. Thus [they] perpetuate the same old stuff. That’s my two cents’ worth. But as I tell everyone, ‘I’ll tell you what I know or do, but it’s not my job to convince anyone to do it my way’.”
Release Agents — Try Shoe Polish
Regarding release agents, Speedy stated: “I use Kiwi Neutral or Tan shoe polish. This works great and you can find it anywhere. Do NOT use the black or brown as it will stick.”
View More Photos of Speedy Inletting and Bedding Job CLICK HERE to see an interesting bedding job done by Speedy using a custom titanium bedding block. Speedy notes, “The stock was a raw blank requiring full inletting for the action to fit properly plus the titanium block. All the loading ports, bolt handle cut, bolt stop, and trigger guard cuts were done with diamond tooling to eliminate fraying and/or delamination of the wood.” You’ll find more projects by Speedy on his Facebook Page. Speedy is in San Antonio, Texas now, and accepting new projects with his company S.G. Rifles LLC.
I first tried factory ammo, loaded with Hornady 32gr and 40gr V-Max. The 32gr load shot the best—five-shot groups were slightly larger than a half-inch at 100 yards. My dad heard that Alliant Reloder 10X was a good powder for this cartridge, and he worked up a load using the Sierra 32gr BlitzKing bullet. He found that 26.5 grains was the right amount for his rifle. Considering that my rifle was probably made on the same day, having a consecutive serial number, I decided to try my dad’s load, along with a half-grain up and down, meaning 26, 26.5, and 27 grains of powder. I, too, found that my rifle prefers 26.5 grains of RL 10X. With this load, I’ve been able to shoot consistent quarter-inch, five-shot groups at 100 yards. Cartridge OAL is 2.353″, or 1.990″ measured from the ogive.
Building an Accurate Load
Shooting the Rifle–How It Performs
This Rifle Literally Shoots Bug-Holes
