Here’s something truly innovative — a 3D-printed metal rimfire receiver!
Forum member Marcos G. (aka MFP_BOP) has designed and created his own rimfire action. But it’s not machined or forged. This new action was created with a 3D sintered metal printer. A 3D modeler by profession, Marcos has the requisite skill set and access to a very high-tech (and expensive) metal printer. As printed, the actual receiver is shown below. It has just been sent out to be age-hardened to 40 HRC, after which final finish work (e.g. cleaning up tenon threads) will be done. To learn more about this 3D-printing project, read this FORUM Thread.
When most of us think of 3D printing, we think of small plastic parts — nothing as strong as steel. But there are 3D printers that employ sintered metal to build complex metal components. Marcus says the receiver he’s created should have “stated yield and tensile strength similar to investment casting.” The material used for the action is 15-5 PH® Stainless Steel (in sintered form).
The action was designed to use a PT&G 40X rimfire bolt. Marcos notes that “There is an extraction cam inside of the action, something that would be very hard or impossible to do by regular machining and/or EDM.”
Born in Brazil, Marcos now lives in New Zealand. He tell us that: “New Zealand is a very gun-friendly country. I just need my A-CAT license to make [a receiver.]” So there are no special legal restrictions (as might apply in the USA). The printer is EOS270 laser metal sintering machine. Marcos says: “The current price for one of those machines is in five figures, but I am 99.99% sure that in 5-7 years this technology will be readily available to anyone.”
As designed, the receiver was 1.4″ in diameter. Marcos reports it came out of the printer at 1.403″. The designed boltway is .690″ and it came out .687″. Marcos notes: “I haven’t noticed any warping. The threads are rough, really! Interior and exterior finishes are really good though, probably because of the way it’s been printed: upside down (must have gone through tumbling afterwards). I will have to run some taps and single-point-cut the tenon threads to clean them up.”
Marcos says the actual printing process took a lot of time: “I should have asked how long it took to be printed!” But consider this, the 7″-long receiver is created in layers only 20 microns thick, so you can understand why the process took so long.
Reasons to Print a Rimfire Receiver
Marcos 3D-printed his own action basically to save money: “Some may be asking why I printed this receiver. Here’s a little history… I tried different ways to bring a Stiller 2500X action into New Zealand. The final price to my door was NZ $3000.00 (about $2195.00 USD). Designing and making one would be way cheaper, but I felt nobody here could machine the internal abutments with precision. Also printing was still a little cheaper and printing offered the chance to put in it all details I wanted — such as M4 threads, internal cam, and fillets.”
22Plinkster Tours CCI/Speer Idaho Factory
Trickshot artist and YouTube host 22Plinkster recently got a chance to tour the CCI/Speer production facility in Lewiston, Idaho. This large plant produces both rimfire and centerfire ammunition. While touring the plant, 22Plinkster was allowed to capture video showing the creation of .22 LR rounds from start to finish. This is a fascinating video, well worth watching.
This revealing video shows all phases of .22 LR ammo production including cupping, drawing, annealing, washing, drying, head-stamping, priming, powder charging, bullet seating, crimping, waxing, inspection, and final packaging. If you’ve got ten minutes to spare, we really recommend you watch the video from start to finish. You’ll definitely learn some new things about rimfire ammo.
.22 Plinkster was literally up to his neck in ammo while touring the CCI/Speer Idaho ammo plant. He says: “This was truly a dream come true for me. I can’t thank the people at CCI and Speer enough for allowing me to do this. I couldn’t possibly show everything that went on at the factory. However, hopefully I showed you enough for you to grasp the concept of how rimfire [ammo] is made.”
Speer Brothers Brought Ammo Production to Lewiston
Here is an interesting historical footnote. Today’s large CCI/Speer operation in Idaho can be traced back to the companies founded by the Speer brothers. After settling in Lewiston in 1944, Vernon Speer started Speer Bullets. A few years later, in 1951, Vernon’s brother Dick (with partner Arvid Nelson) started Cascade Cartridges Inc., a producer of small-arms ammunition and primers. Yes, as you may suspect, Cascade Cartridges Inc. is now CCI, a Vista Outdoor company, and one of the largest manufacturers of primers and loaded ammunition. Today, the CCI/Speer Lewiston plant produces both Speer bullets and CCI-branded ammunition and primers. Vista Outdoor’s predecessor, ATK, acquired the plant in 2001. Vernon Speer died in 1979, and Dick Speer died in 1994.
There’s an all-new book from Applied Ballistics. Modern Advancements in Long Range Shooting – Volume II, is now available for pre-order from the Applied Ballistics eStore. This 356-page hardcover resource is chock full of information, much of it derived through sophisticated field testing. The pre-order price is $34.95, $5.00 off the regular $39.95 price. The books are expected to ship in July, 2016.
AUDIO FILE: Bryan Litz Talks about Modern Advancements in Long Range Shooting, Volume 2. (Sound file loads when you click button).
Volume II of Modern Advancements in Long Range Shooting contains all-new content derived from research by Applied Ballistics. Author Bryan Litz along with contributing authors Nick Vitalbo and Cal Zant use the scientific method and careful testing to answer important questions faced by long range shooters. In particular, this volume explores the subject of bullet dispersion including group convergence. Advanced hand-loading subjects are covered such as: bullet pointing and trimming, powder measurement, flash hole deburring, neck tension, and fill ratio. Each topic is explored with extensive live fire testing, and the resulting information helps to guide hand loaders in a deliberate path to success. The current bullet library of measured G1 and G7 ballistic coefficients is included as an appendix. This library currently has data on 533 bullets in common use by long range shooters.
Bryan tells us that one purpose of this book is to dispel myths and correct commonly-held misconceptions: “Modern Advancements in Long Range Shooting aims to end the misinformation which is so prevalent in long range shooting. By applying the scientific method and taking a Myth Buster approach, the state of the art is advanced….”
Bullet Dispersion and Group Convergence
Part 1 of this Volume is focused on the details of rifle bullet dispersion. Chapter 1 builds a discussion of dispersion and precision that every shooter will benefit from in terms of understanding how it impacts their particular shooting application. How many shots should you shoot in a group? What kind of 5-shot 100 yard groups correlate to average or winning precision levels in 1000 yard F-Class shooting?
Chapter 2 presents a very detailed investigation of the mysterious concept of group convergence, which is the common idea that some guns can shoot smaller (MOA) groups at longer ranges. This concept is thoroughly tested with extensive live fire, and the results answer a very important question that has baffled shooters for many generations.
Part 2 of this Volume is focused on various aspects of advanced hand-loading. Modern Advancements (Vol. II) employs live fire testing to answer the important questions that precision hand loaders are asking. What are the best ways to achieve MVs with low ES and SD? Do flash hole deburring, neck tension, primer selection, and fill ratio and powder scales sensitivity make a difference and how much? All of these questions are explored in detail with a clear explanation of test results.
One of the important chapters of Part 2 examines bullet pointing and trimming. Applied Ballistics tested 39 different bullet types from .224 through .338 caliber. Ten samples of each bullet were tested for BC in each of the following configurations: original out of the box, pointed, trimmed, pointed and trimmed. The effect on the average BC as well as the uniformity in BC was measured and tabulated, revealing what works best.
Part 3 covers a variety of general research topics. Contributing author Nick Vitalbo, a laser technology expert, tested 22 different laser rangefinders. Nick’s material on rangefinder performance is a landmark piece of work. Nick shows how shooters can determine the performance of a rangefinder under various lighting conditions, target sizes, and reflectivities.
Chapter 9 is a thorough analysis of rimfire ammunition. Ballistic Performance of Rifle Bullets, 2nd Edition presented live fire data on 95 different types of .22 rimfire ammunition, each tested in five different barrels having various lengths and twist rates. Where that book just presented the data, Chapter 9 of this book offers detailed analysis of all the test results and shows what properties of rimfire ammunition are favorable, and how the BCs, muzzle velocities and consistency of the ammo are affected by the different barrels.
Chapter 10 is a discussion of aerodynamic drag as it relates to ballistic trajectory modeling. You will learn from the ground up: what an aerodynamic drag model is, how it’s measure and used to predict trajectories. Analysis is presented which shows how the best trajectory models compare to actual measured drop in the real world.
Finally, contributing author Cal Zant of the Precision Rifle Blog presents a study of modern carbon fiber-wrapped barrels in Chapter 11. The science and technology of these modern rifle barrels is discussed, and then everything from point of impact shift to group sizes are compared for several samples of each type of barrel including standard steel barrels.
At the request of our readers, we provide select “Deals of the Week”. Every Monday morning we offer our Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, 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.
1. Midsouth — Lyman BoreCam Digital Borescope, $222.46
The Lyman BoreCam is an electro-optical borescope with a digital display. You can record “stills” on a SD card. This is one of the hottest products on the market right now — so hot that it has been back-ordered at most vencdore. But we found some in stock at a great price. Midsouth Shooters Supply now has the BoreCam for $222.46. Grab it while you can at that price. Other online vendors are charging a LOT more (e.g. MidwayUSA price is $259.99).
The system really works. A few of our Forum members have the system and they say it functions very well and is “very easy to set up and use”. Here’s what an Optics Planet BoreCam buyer wrote: “I have used Hawkeye borescopes and know their quality. The Lyman worked as advertised and is a great tool for checking for leading, cleanliness of bore, and bore wear. The compact size, ability to take pictures, and store them are a big plus.”
2. Grafs.com — NEW Nikon Wind Meter for SmartPhones, $28.99
Here’s a great new gadget for under $30.00. Nikon’s new Spot On™ Ballistic Wind Meter plugs directly into the headphone port on most popular smart phones. The Spot On Wind Meter reads both wind speed and direction and inputs the data directly into Nikon’s free Spot On Ballistics Mobile App (available for iOS and Android). This allows you to quickly determine and calculate wind drift corrections without needing a separate, dedicated wind meter. When not in use, the Nikon device easily fits in a pocket.
Video shows use of Nikon Spot On Wind Meter starting at 2:35 time mark:
3. Natchez — Special 5 Reloading Press Kit, $199.99
This is an excellent entry-level reloading kit, which is on sale for $199.99 at Natchez Shooters Supply. We like the relatively compact Special 5 press for most reloading duties. Eventually you many want to add an additional large heavy press, but this will get the job done. This kit includes an RCBS Powder Measure, Digital Scale, Powder Trickler, Hand Priming Tool, Load Manual, Loading Tray, and more. It’s hard to beat this combination of tools for under $200.00.
4. CDNN Sports — Remington 597 for $149.99
Looking for a “first rifle” for a family member? Consider this semi-auto Remington 597. It currently retails for just $149.99. That’s right, for under $150 you can get a reliable, self-feeding rimfire rifle that will provide years of fun for a young shooter. The 597 has a stock that’s sized right for both youngsters and adults. Receivers are dovetailed for standard rimfire rings and are also drilled and tapped to allow mounting of Weaver-style bases.
5. Walmart — 14-gun Stack-on Gun Safe
If you need a smaller, secondary safe that can fit in a closet, here’s a 14-gun Stack-On Safe that is a great bargain right now. The safe is on sale at Walmart for $399.00 — nearly $200 off the regular price. And Walmart offers FREE shipping or FREE Pickup. Don’t expect this to hold anywhere near 14 scoped rifles — 8 or so long-guns will probably be the most you can fit comfortably. But that’s fine for a secondary “closet” safe that will also articles such as cameras, jewelry, and important documents. One verified safe purchaser states: “This safe is 300 pounds, not too hard to move around, took it home in my truck.”
6. Amazon — Neiko Digital Calipers, $17.16
Even if you have a good set of calipers, you may want to get one of these Neiko 01407A Digital Calipers. The #1 best-selling digital caliper on Amazon.com, this Neiko tool features a large LCD Screen and measures up to 6.0 inches. With over 1500 customer reviews, this product has earned an overall rating of 4.4 out of 5 stars. It’s hard to go wrong for $17.16, even if you just use these as a spare set for measuring group sizes and case trim lengths.
7. Amazon — 34 NRR Top-Selling Ear Muffs
If you want serious hearing protection, and can tolerate large muffs, these Clear Armor earmuffs are hard to beat for the price. They seal very well and carry an unsurpassed 34db Noise Reduction Rating (NRR). These are the #1 Best Selling Safety Muffs on Amazon. Yes they are big and bulky — but you only have one set of ears. These are a good choice for loud magnum rifles and noisy indoor ranges.
Who wouldn’t like to find a nice, wooden crate of rimfire ammo under the Christmas tree? Here’s a Limited Edition Winchester Ammo Special offered by Cabelas.com for the holidays. The crate contains 500 rounds of Winchester Super-X Hi-Vel .22 LR ammo, loaded with 36gr copper-plated, hollow-point bullets. This ammo is rated at 1,280 fps velocity, making it good for small varmints as well as plinking. The Winchester ammo comes packaged in a premium, limited-edition wooden box. We think this would make a great end-of-year gift for a 4H Club Team, or Boy Scouts youth shooting program.
With 500 rounds at $39.99, that works out to just 8 cents a rounds — the equivalent of four bucks for a 50-round box. Thats a very good deal when you consider what rimfire ammo cost just a year ago. Also if you add another item to raise your total order to at least $49.00, you can get FREE Shipping with Code 5JOLLY. The Winchester Ammo Special is limited to one crate per customer per day, but you can add a second, different product to qualify for free shipping.
For centerfire ammo, you can choose from dozens of flip-top boxes, storage bins, or milsurp-style ammo cans. For rimfire ammo, there are not so many good choices. Our preferred rimfire ammo carrier is the MTM SB-200 Small-Bore Fitted Ammo Box. This flip-top plastic box holds 100 rimfire rounds in 10×5 black grids on the left and right. In the center is a storage area that will hold another 100 rounds in factory boxes. MTM’s SB-200 box was recently re-designed so it will now hold 17 HMR rounds, as well as 17 Mach 2, 22 short, 22 Win Mag Rimfire, and of course 22 Long Rifle (.22LR)
MTM Case-Gard 200 Round Smallbore Box
This is really the only product of its kind on the market. It allows you to conveniently and securely hold 200 rimfire rounds, and also segregate your ammo by brand or bullet type. These boxes fit all types of popular rimfire ammunition. The vertical clearance of the lid is sufficient to hold the longer .22 WMR Rounds, and 17 HMR (as well as .22 LR naturally). The lid fits securely so you don’t have to worry about your rimfire ammo spilling out on the way to the range.
If you don’t have one of these boxes yet, we recommend you order one or two. They cost less than $15.00 and are available in Blue or “Rust” (a brick color).
Any experienced varmint hunter knows the value of a good .17 HMR rifle, particular when used inside 150 yards on small critters such as ground squirrels. The .17 HMR is a great round, but for general plinking and target practice, we prefer shooting the venerable .22 Long Rifle. The .22 LR has less recoil and less noise. Importantly, .22 LR ammo (even with today’s shortages) remains much less expensive than .17 HMR ammunition.
Wouldn’t it be great if a single, affordable varmint rifle could shoot both .22 LR and .17 HMR? Well, CZ offers just such a rig — the CZ Model 455 American Combo, a versatile switch-caliber rifle priced at about $485.00 (MSRP is $531.00). The American Combo comes complete with both .22 LR and .17 HMR barrels, easily interchanged with a simple Allen wrench. As CZ explains: “The CZ 455 eliminates the need to spend the extra expense on a second rifle when you want to add another quality shooter to your rimfire battery”. For a bit more money, you can even purchase a .22 WMR barrel, making your CZ a triple-threat varmint-slayer.
Ruger 10/22 owners should cheer. Victor Company USA has finally started shipping its new Titan 1022 stock for Ruger’s popular 10/22. We like Victor’s new stock, and we think it will be a great for tactical rimfire matches and cross-training. We bet a lot of varmint shooters will grab one of these Titan 1022 stocks as well. At just $169.99, it’s quite affordable. (MSRP is $189.99, but Victor Company’s website currently shows “Introductory Pricing” of $169.99.)
CLICK Image for full-screen version
Victor’s Titan 1022 Precision Rimfire Stock features a vertical-style grip and a wide, beavertail forearm with molded nibs for enhanced grip (max barrel diameter is 0.920″). In the rear, the buttstock features a cut-out for the user’s off hand with a deeper “keel” for riding the bags. With “Introductory Pricing” of just $169.99, the stock is available in two colors: Flat Dark Earth (above) or Matte Black (below). A Ruger 10/22 never looked so good. Visit www.victorcompanyusa.com for more details.
Victor Company 1022 Precision Rimfire Stock (CLICK photo for full-size image.)
Cross-training with a .22 LR
Shooters can improve their centerfire skills by cross-training with a .22LR rimfire rifle. In terms of wind drift, shooting a .22LR at 150 yards is equivalent to shooting a .308 at 330 yards. (See Chart)
.22 LR vs. .308, Distances for Equal 10 MPH Wind Drift
This table shows the corresponding distances at which a 10 mph full-value crosswind pushes a .22 LR bullet and .308 projectile roughly the same amount. Values are based on 0.130 BC for a 40gr .22 LR bullet, and 0.496 BC for 175gr .308 bullet.
22 LR 40gr 1050 fps
50 yd Wind 1.0″
75 yd Wind 2.2″
100 yd Wind 3.8″
125 yd Wind 5.8″
150 yd Wind 8.2″
175 yd Wind 11.0″
200 yd Wind 14.3″
.308 Win 175gr 2650 fps
130 yd Wind 1.07″
180 yd Wind 2.15″
230 yd Wind 3.68″
280 yd Wind 5.63″
330 yd Wind 7.98″
380 yd Wind 10.71″
440 yd Wind 14.56″
Along with the training benefits, rimfires are fun to shoot, with less noise, less recoil, and a much lower cost per shot. If you like competition, many clubs around the country offer rimfire tactical matches, or something similar (multi-distance matches shot from a variety of positions). With paper and/or reactive targets from 25 to 150 yards, tactical rimfire matches are fun and challenging.
Got a 1911-style centerfire pistol? Would you like to cross-train with an ergonomically-identical rimfire version that lets you shoot less-expensive .22 LR ammo and not worry about recovering your brass? Well check out Kimber’s Rimfire 1911s. We think John Moses Browning would smile at this adaptation of his classic 1911 design.
Guaranteed Accuracy
Kimber’s line-up of rimfire pistols includes matte black and silver-tone Rimfire Target models ($871 MSRP), plus a deluxe, two-tone Rimfire Super model ($1220 MSRP) with Rosewood grips, front strap checkering, and KimPro II finish. Shown above, the Rimfire Super model is guaranteed to put five shots in 1.5″ or less at 25 yards. Both standard and deluxe models feature aluminum frame and slide, steel barrel, and adjustable match-type sights.
What’s That Pistol?
While viewing Panteo’s Training with a 22 DVD, we noticed a sweet-looking, silver-tone m1911-style rimfire pistol in the hands of host Michael Bane. At first, we thought this might be a new stainless version of Sig Sauer’s popular 1911-22. But, in actuality, Bane was shooting a Kimber Rimfire Target pistol. Michael’s aluminum-framed Kimber performed great in rapid-fire drills. See one in action below.
Watch Slow-Motion Video of Kimber Rimfire Target (Black Version)
Sharpshooter (and competitive smallbore shooter) Kirsten Joy Weiss tried a special New Year’s trick shot for 2015. In keeping with the festive New Year’s spirit, Kirsten attempted to shoot the cork off a champagne bottle. After a few unsuccessful tries, she managed to hit the cork with at least two shots. But alas the cork did not fly. She actually hit the cork, but it did not release. That was surprising…
Undaunted, Kirsten changed her strategy, aiming for the neck of the bottle. This duplicates the process of “sabering” a champagne bottle — a method of liberating the bubbly by slashing off the end of the neck with a blade. Aiming for the neck of the bottle, Kirsten successfully blew off the top of the bottle. (Apparently, when “sabering” it is actually the pressure within the champagne bottle which does most of the work).
Part 2 of this Volume is focused on various aspects of advanced hand-loading. Modern Advancements (Vol. II) employs live fire testing to answer the important questions that precision hand loaders are asking. What are the best ways to achieve MVs with low ES and SD? Do flash hole deburring, neck tension, primer selection, and fill ratio and powder scales sensitivity make a difference and how much? All of these questions are explored in detail with a clear explanation of test results.
Guaranteed Accuracy
Sharpshooter (and competitive smallbore shooter) Kirsten Joy Weiss tried a special New Year’s trick shot for 2015. In keeping with the festive New Year’s spirit, Kirsten attempted to shoot the cork off a champagne bottle. After a few unsuccessful tries, she managed to hit the cork with at least two shots. But alas the cork did not fly. She actually hit the cork, but it did not release. That was surprising…
