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March 14th, 2022

Reloading Press Comparison: Rock Chucker vs. Co-Ax vs. Summit

RCBS Rockchucker Rock Chucker Forster Co-Ax Coax Summit single-stage Press Hornady Laurie Holland Target Shooter

“The press is the heart of the handloading operation, also traditionally the most expensive single tool employed…” — Laurie Holland

British competitive shooter Laurie Holland has reviewed three popular, single-stage reloading presses for Target Shooter Magazine (targetshooter.co.uk). Laurie bolted up a Forster Co-Ax, RCBS Rock Chucker Supreme, and RCBS Summit to his reloading bench and put the three presses through their paces. These three machines are very different in design and operation. The venerable Rock Chucker is a classic heavy, cast-iron “O”- type press that offers lots of leverage for tough jobs. The smaller RCBS Summit press is an innovative “upside-down” design with a large center column and open front. It offers a small footprint and easy case access from the front. The Co-Ax is unique in many respects — dies slide in and out of the upper section which allows them to “float”. The cartridge case is held in the lower section by spring-loaded jaws rather than a conventional shell-holder.

READ Laurie Holland Reloading Press 3-Way Comparison Review

If you are considering purchasing any one of these three presses, you should read Laurie’s article start to finish. He reviews the pros and cons of each press, after processing three different brands of brass on each machine. He discusses ergonomics, easy of use, press leverage, smoothness, priming function, and (most importantly), the ability to produce straight ammo with low run-out. The review includes interesting data on case-neck run-out (TIR) for RWS, Federal, and Norma 7x57mm brass.

RCBS Rockchucker Rock Chucker Forster Co-Ax Coax Summit single-stage Press Hornady Laurie Holland Target ShooterReview Quick Highlights:

RCBS Rock Chucker Supreme
“My expectations of the antediluvian RCBS Rock Chucker Supreme’s performance weren’t over high to be honest as I mounted it in the place of the Summit. As soon as I sized the first of the stretched RWS cases though, I saw why this press has been such a long-running favorite. The workload was considerably reduced compared to the other two presses and doing 40-odd cases took no time at all with little sweat — it just eats hard-to-size brass.”

RCBS Summit Press
“Despite its massive build and long-stroke operating handle, [the Summit] took more sweat than I’d expected, even if it was somewhat less work than with the Co-Ax. Although the Summit is apparently massive, I noticed that the die platform would tilt fractionally under the heaviest strains[.] It is nevertheless a very pleasant press in use and bullet seating was a doddle — the few examples tried proving very concentric on checking them afterwards. The optional short handle would be valuable for this task.”

Forster Co-Ax
“[On the Forster Co-Ax], the operating handle is above the machine, located centrally here [with] twin steel links at the top end of the press dropping down to the moving parts. The Co-Ax incorporates a number of novel features, principally its automatic and multi-case compatible shell-holder assembly with spring-loaded sliding jaws, very neat spent primer arrangements that allow hardly any gritty residues to escape and foul the moving parts and, the snap-in/out die fitment that allows rapid changes and also sees the die ‘float’ in relation to the case giving very concentric results. I own this press and it meets my handloading needs very well.”

Permalink Gear Review, Reloading 4 Comments »
March 12th, 2022

Go with the “O” — O-Rings May Reduce Run-Out When Sizing

reloading die O-ring
reloading die O-ring

Here’s an inexpensive procedure that can help you load straighter ammo, with slightly better measured concentricity (i.e. less run-out) on the case necks and bullets. Simply use a Rubber O-Ring on the underside of the die locking ring. This allows the die to self-align itself (slightly) to the case that is being sized. Without the O-Ring, if the flat surface on the top of your press is not perfectly square with the thread axis, your die can end up slightly off-angle. This happens when the bottom of the locking ring butts up tight against the top of the press. The O-Ring allows the die to float slightly, and that may, in turn, reduce the amount of run-out induced during case sizing.

Top prone shooter GSArizona has tried this trick and he says it works: “Go to your local hardware store and get a #17 O-Ring (that’s the designation at Ace Hardware, don’t know if its universal). Slip the O-Ring on the die and re-adjust the lock ring so that the O-Ring is slightly compressed when the die is at the correct height. Size and measure a few more cases. You will probably see a slight improvement in neck concentricity as the die can now float a bit as the case enters and leaves it. This isn’t going to be a dramatic improvement, but it’s a positive one.”

We want to stress that adding O-Rings to sizing dies may help some reloaders, but we don’t offer this as a panacea. Try it — if using the O-Ring reduces measured runout that’s great. If it doesn’t, you’ve only spent a few pennies to experiment.

reloading die O-ring

Lee Precision makes die lock rings with built-in O-Rings. Lee’s distinctive lock ring design allows the same kind of self-alignment, which is good. However, Lee lock rings don’t clamp in place on the die threads, so they can move when you insert or remove the dies — and that can throw off your die setting slightly. By using an O-Ring under a conventional die lock ring (that can be locked in place), you get the advantages of the Lee design, without the risk of the lock ring moving.

Permalink Bullets, Brass, Ammo, Reloading 2 Comments »
March 9th, 2022

Keep Shooting Despite Shortage of Primers, Powder, and Bullets

Dennis Santiago component shortage reloading shooting sports usa ssusa

The last 18 months has been a frustrating time for hand-loaders, and particular competitive rifle shooters who want the very best components for their match loads. Some of the most popular powders, such as Varget and H4350, are very difficult to find. And the price of primers has skyrocketed, with vendors changing as much as $150-$200 per thousand of popular types such as CCI BR2s. And even brass for popular cartridges, such as 6.5 Creedmoor and 6mmBR has been in short supply. And there are dozens of scam websites now that claim to have primers and powder for sale. Be wary of ANY site that will not take major credit cards, but insist on CashApp, Zelle, Venmo Bitcoin etc. for payment.

Thankfully, there ARE some strategies that can help competitors keep shooting despite the component shortages. First, you can use different types of bullets for practice. Creedmoor Sports offers big-name factory seconds Practice Bullets in multiple calibers. Second, you can look for alternate powder sources if you can’t find the Hodgdon or Alliant powders you prefer. You’ll find a wide selection of Vihtavuori and Accurate powders in stock at many vendors and also look for Shooters World powders. Also if you check local gunstores you may get lucky and find the H4350 or Alliant Reloder 16 you need.

To help fellow shooters overcome the problems of component shortages, our friend Dennis Santiago recently wrote a good article for Shooting Sports USA. This article talks about strategies that can help you keep up your monthly round count. One is to use more available powder and bullets for off-hand practice, where the nth degree of load accuracy is less critical. Dennis also recommends connecting with fellow shooters in your area. You may find that you may trade one hard-to-find component you’ve got for the powder or primers you need. This Editor recently traded some CCI 450 primers for H4350 powder.

Dennis Santiago component shortage reloading shooting sports usa ssusa

We recommend you read the article by Dennis. There are many good suggestions that can help you maintain your live-fire shooting skills, and still attend matches regularly during this time of shortages.

Permalink - Articles, Bullets, Brass, Ammo, Reloading 1 Comment »
March 5th, 2022

Saturday at the Movies: Ultimate Reloader Product & Tech Videos

YouTube Ultimate Reloader Video Showcase BAT action AMP Press reloading T-7

Gavin Gear, founder of the UltimateReloader.com website, has created a very popular YouTube Channel. Over the past 14 years, Gavin has produced hundreds of videos covering nearly every aspect of reloading, rifle assembly, and gunsmithing. When important new reloading products are released, you’ll often find that the very first, in-depth reviews come from Gavin. He seems to get the new stuff before ANYone else.

Gavin’s Ultimate Reloader videos are very professional, with high-quality lighting and audio, multiple camera angles, and careful editing. And unlike many of the YouTube video hosts, Gavin is also a talented shooter and skilled gun-builder. His shop is complete with modern lathes, mills and other tools so he can build his own very accurate rifles from start to finish.

BAT Machine Modular Bolt — Design Features and “How To”

With most rifle actions, if you want to run a variety of cartridges with different case head diameters, you will need multiple bolts. However, there IS an alternative to purchasing multiple pricey bolts. BAT Machine has come up with a great solution for the bolt face issue — the Modular Bolt System. In this video Gavin explains how the Modular Bolt System works. He explains the design, then shows, step-by-step, the entire process for swapping bolt head sizes. With a bit of practice, this can be done easily in a couple minutes. Showing a bolt head swap start to finish (00:50 — 2:15 time mark), Gavin shows how to use the BAT Bolt Disassembly Tool and BAT Sleeve Removal Tool to complete the task quickly and easily.

AMP Inline Press — Effect of Brass Prep and Neck Chamfer

In this video Gavin examines various cartridge brass prep processes, and then used the advanced, computer-controlled AMP press to determine how those processes affect bullet seating forces/consistency. Gavin noted: “Each process is examined and a graph is presented of the bullet seating forces. We anticipated some of what we saw, and were surprised by other things.” The computer-controlled AMP press provides a graph of the exact seating forces, allowing to improve your brass prep to achieve the most consistent seating. Gavin notes: “Lately we’ve been seeing the AMP Press used for tight quality control from precision reloaders around the world.”

In this follow-up video, Gavin employs the advanced AMP press to examine how case neck chamfering affects bullet-seating force and consistency. Gavin tells us: “In this video, we single out one variable: Chamfering Case Mouths.”

Creedmoor Sports TRX-925 Scale Review

This is NOT a magnetic force-restoration scale, but it is one of the best strain-gauge scales you can buy. And, priced at $349.95, the Creedmoor Sports TRX-925 Precision Reloading Scale costs less than half what a good force-restoration scale costs. That’s a big deal for folks on a budget. This TRX-925 scale offers very good performance for the price. We include a second, detailed, 25-minute review by F-Class John who says the TRX-925 offers excellent performance for the price. F-Class John, who has his own popular YouTube Channel, produces very comprehensive, thorough product reviews.

This Second TRX-925 Video is from F-Class John:

Finding Cartridge Length to Lands in your Barrel — Three Methods

In this video, which has over 250,000 views on YouTube, Gavin shows three (3) different methods to determine length to lands (L-to-L). This means you are finding the exact length of a case with bullet when the bullet first contacts the rifling in the barrel. It is important to determine this dimension with repeatable precision, so you can tune your load length for best accuracy. In addition, in some disciplines you’ll want to avoid seating into the lands.

Creedmoor Enhanced Press Head for Redding T-7 Press


Creedmoor sports redding t-7 enhanced turret head press

The new Creedmoor Enhanced Press Head for the Redding T-7 Turret Press is a direct upgrade that offers many advantages for precision, ease of use, and reloading. Made from solid 416 Stainless Steel, this Press Head boasts precision cut threads, integral detent/track system, and seven threaded handle position. Creedmoor states: “A machined stainless steel head, rather than one made from cast steel, allows for tighter tolerances, an improved surface finish, and ultimately makes a better product for our customers.” The Redding T-7, already a good turret press, functions better with this press head, which is precision-machined to ensure flatness of both upper and lower surfaces. The Enhanced Press Head, which can be installed in a matter of minutes, is available now from Creedmoor Sports for $179.95.

.223 Rem vs. 5.56x45mm — 6.3 Million Views

This video explains essential facts and corrects common misconceptions related to both .223/5.56 ammunition, as well as .223/5.56 rifles. Gavin provides insight on chamber specs, pressure levels, barrel twist rates, military 5.56 crimped brass, and other important topics. If you are new to the AR world, this video is definitely worth watching. And that’s why it now has garnered over 6.3 MILLION YouTube views, making it one of the most popular gun-related videos ever made. Gavin adds: “Don’t forget to check out the full write-up on UltimateReloader.com.” CLICK HERE for FULL STORY.

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March 1st, 2022

Guide to Auto-Indexing Progressive Reloading Presses

USAMU Progressive Press auto  self-advancing

The U.S. Army Marksmanship Unit regularly publishes reloading “how-to” articles on the USAMU Facebook page. One very good article, part 5 of a 6-part series, focused on Progressive Presses. This article explains proper procedures for Auto-Indexing Progressives, which advance the shell-plate with every pull of the handle. Auto Progressives are very efficient, but they also require special attention and focus, because so many things are happening at once. You need to train yourself to watch every station. If you run a progressive press now, or are considering getting a progressive, we recommend you read this article. Visit the USAMU Facebook page for other helpful handloading guidance.

Progressive Loading Presses — Self-Advancing Shellplate Type

USAMU Progressive Press auto  self-advancing
Photo courtesy UltimateReloader.com.

Recently, we addressed manually-operated progressive presses for the beginning handloader. This type press requires one to manually advance the shellplate after each handle stroke. An advantage for beginners is that nothing happens at any station until the loader wants it to. This helps users avoid problems from clearing malfunctions without noticing that the shellplate has advanced itself. (Read Previous USAMU Article on Manual Progressives.)

The next, more luxurious type progressive press advances the shellplate automatically whenever the handle is cycled. [Editor: This is also called an “Auto-Indexing” Progressive Press.] Typically, each stroke automatically sizes and primes a case, operates the powder measure (if used) and seats a bullet. Some also have case feeders that automatically put a new case in the shellplate with every cycle. Others require the loader to insert a case each cycle. With both types, the loader usually puts a bullet on each sized/primed/charged case.

[CAVEAT: While our Handloading Shop has several progressive presses, ALL of our powder charges are thrown/weighed by hand. We do not use powder measures on our presses. Our progressives are used for brass preparation, priming, seating, etc., but not for fully-progressive loading.]

The manually-advanced press can be a boon to beginners, but as one gains experience it can be a mixed blessing, depending on one’s style. If one pays close attention to every operation and loads without distractions, the manual press is very reliable and allows full scrutiny of each round as it is loaded. However, if one easily drifts into day-dreaming, or isn’t focused on paying careful attention at all times, the manual progressive can be a bit of a liability. The opportunity for forgetting a powder charge, leading to a squib load, is ever-present. [Editor: A lock-out die can help reduce the risk of a squib load, or a double-charge. See below.]

The automatically-advancing progressives help prevent this by ensuring a powder charge will be dropped each time the handle is operated. Experienced handloaders often appreciate this feature due to the savings of time and effort. Individual preferences between the two press styles are influenced by several factors. These include one’s comfort with more- vs. less-complicated mechanisms, how often one changes calibers (case feeders often must be converted, in addition to dies and shellplates), how many rounds one loads annually, relative ease of changing primer mechanisms from small to large, etc. Automatic progressives and their caliber conversion kits tend to be significantly more expensive than manual progressives and caliber conversions from the same maker.

One USAMU handloader, who likes simple, bullet-proof machines and maximum efficiency when converting presses, owns two manually-advanced progressives. One is set up for large primers, and the other for small primers. He can change calibers in the twinkling of an eye. As he loads for many different calibers, this fits his style. Another handloader here is just the opposite. He loads for a few calibers, but in larger quantities. He much prefers his self-advancing press with case-feeder for its speed. He makes large lots of ammo in a given caliber before switching, to improve overall efficiency. His caliber conversion kits are more expensive than those for the manually-advanced progressive, but he uses fewer of them.

Whichever type one chooses, it is VERY important to buy quality gear from a manufacturer with a long, well-established track record for quality, durability and good customer support. Avoid jumping on the “latest, greatest” model until it has a proven track record. For example, this writer knows a loader who got a brand-new, expensive, self-advancing model press some years back, shortly after its introduction. As is too often the case these days, the manufacturer released it before all the “bugs” were worked out.

Better Safe Than Sorry — the RCBS Lock-Out Die
RCBS Makes a “Lock-Out Die” that senses the powder charge. This will halt the Progressive press if you have a double charge, or an undercharge. Your Editor has the Lock-Out Die on his RCBS Pro 2000. It has “saved his bacon” a half-dozen times over the years. It can be used on Dillon and Hornady progressives as well as RCBS machines.

It would not fully seat primers to the correct depth. No amount of adjustment, extra force, or fiddling would do better than to seat primers barely flush with the case head. Any inattention could result in a slightly “high” primer, protruding above the case head. It created a risk for slam-fires, particularly in semi-autos without spring-retracted firing pins, such as the M1 or M1A. In desperation, he had a machinist buddy study the problem and machine a new part to correct it. No dice. Its engineering didn’t permit full primer seating, even with extended parts. He now wishes he’d heeded his shooting buddies’ advice to stick with the “tried and true,” reliable performer they all used.

Whichever press one selects, see if the maker has a kit or list of commonly-replaced parts. Having needed springs, pins, etc. on hand in the rare event that one breaks or “goes missing” can save the day when one is busy loading for a match! Another tip for improving one’s overall loading efficiency (rounds loaded with minimal set-up/tear-down time) is to plan one’s handloading by primer size. For example, if your machine is set to use small primers, load all the calibers that you intend to that take small primers, before converting the press to load large-primer calibers.

In our next chapter, we’ll discuss peculiarities of progressive loading for rifle cartridges, with remedies for problems such as excessive cartridge-case headspace variation when sizing, tips for ensuring best powder charge consistency, and so on. Until then, be safe, and good shooting!

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February 26th, 2022

Saturday at the Movies — Videos of Cool Products for Handloaders

Daily Bulletin Saturday Movies Tool time reloading product video review

For this Saturday-at-the-Movies session we offer a selection of videos featuring interesting tools and products for handloaders. If you spend much time in your reloading room, these tools can save you time and help you load better ammo in less time. Today’s feature products range from sophisticated, premium tools such as 21st Century powered neck-turning lathe, to basic add-ons such as Lee Breech Lock Bushings, which are very handy if you load a variety of cartridge types.

21st Century Powered Neck-Turning Lathe



Power is activated by the red button on the end of the blue, horizontal feed handle:

Do you neck-turn hundreds of cases annually? Then you deserve this outstanding tool. The 21st Century Innovation Powered Neck-Turning Lathe may well be quite simply the best system ever created for quickly and precisely uniforming (and reducing) the neckwall thickness of cartridge brass. We have the original manual 21st Century neck-turning lathe, and can attest that it works great. With this powered system you can turn necks faster and more efficiently, with less effort. This is like going from a stick shift to an automatic transmission. The cases feed very smoothly and the results are beautiful. Note: The videos show the version as first marketed by 21st Century Shooting, which now operates as 21st Century Innovation.

The Powered Neck-Turning lathe is a modular system. Swing the bar from right to left to feed the case. The power head (with case holder) glides on stainless steel rails for smooth movement. This allows very precise feed rate. Power is supplied via a button that is built into the end of the feed handle. Push the red button to make the case spin. It’s as simple as that.

Hornady OAL Tool and Hornady Bullet Comparator

Gun Tech Steve Ostrem explains how to properly use Hornady’s Overall Length Gauge to determine length-to-land precisely. The OAL Gauge uses a “Modified Case” that threads onto the tool and holds a bullet. Push on the back of the gauge until you feel the bullet just touch the rifling. (We do this gently at first, tapping the rod a couple time to ensure the bullet is aligned correctly). Once you’ve got the length, then use the tool with a comparator on your calipers to get the length-to-lands. NOTE: We recommend taking the measurement 3-4 times in a row to get a reliable number. With a little practice your should be able to get repeatable measurements within .0015″.

Henderson Power Case Trimming/Chamfering Machine Test

F-Class John tests some of the finest reloading and shooting equipment you can buy. Recently he added the impressive Henderson Gen 3 Powered Trimmer to his inventory of tools. John is now a Henderson fan. He likes the speed, precision, and repeatability of the $779.00 Henderson machine, which trims-to-length and chamfers the case mouth all in one pass. Unlike some other trimming tools, the Henderson indexes off the overall case length NOT the shoulder. John found this worked just fine for his .284 Winchester brass, which has all been full-length sized prior to trimming.

Watch the video to see the Henderson trimmer in action. The dual, parallel horizontal support shafts provide precise alignment of the case as it moves inward toward the cutter blade. The Taper-Lock cutter provides a 14-degree inside chamfer and 30-degree outside chamfer. The trimming process is very consistent case after case, and the Henderson’s design captures brass shavings effectively.

This related video shows a comparison with the popular Giraud Powder Trimer

As noted in this comparison, John liked the precision of the Henderson trimmer and the overall design of the machine, which offers good ergonomics and very precise alignment of the cases. Cycling is smooth and positive, as you can see from the videos. The Giraud is also an excellent machine for bulk trimming/chamfering but the Henderson has some advantages.

Concentricity Checking with Accuracy One Gauge

Every serious hand-loader needs a quality concentricity gauge. The Accuracy One Concentricity Gauge boasts a smart design that delivers precise, repeatable results. We like the unit’s easy adjustability and its ability to work in a variety of configurations. The Accuracy One Gauge measures internal and external neck runout of cartridge cases as well as seated bullet runout. It can also measure the runout of the ogive, bearing surface, and boat-tail of individual bullets. And it can even measure your primer pocket runout.

Lee Die Lock Rings and Spline Drive Breech Lock Bushings


Lee precison die lock ring spline clamp O-ring

Lee precison die lock ring spline clamp O-ringIn this recent video Gavin Gear reviews three types of die accessories from LEE. These work for virtually all standard dies, not just LEE-brand reloading dies. The new LEE basic silver-finish die lock rings now feature splines for enhanced grip and compatibility with LEE’s new die lock ring wrench (photo right). They still boast a rubber 0-Ring that helps “float” the die for improved concentricity. Gavin also reviews Lee’s Spline Drive Breech Lock Bushings for use with presses fitted with LEE’s Breech Lock system. These Breech Lock bushings allow rapid change-out of dies without modifying the setting. The colorful new bushings feature splines on top that work with the new Lee Lock ring wrench shown above. In addition, the Breech Lock Bushings have a clamp to preserve die depth setting.

Tools Galore — Affordable Tools and Accessories for Reloaders

This detailed 15-minute video from the Bolt Action Reloading YouTube Channels, features a variety of lower-cost products/tool that help with key reloading tasks. The video looks at hand priming tools, case prep tools, Lyman stepped loading blocks, powder tricklers, expander mandrels, powder trickler, long-tube funnels and more! If you are getting started in hand-loading, this is a very helpful video to watch. It covers a lot of ground, illustrating options for tool types.

reloading tools videos
This Lyman case prep tool is one of many products reviewed in this 15-minute video.

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February 26th, 2022

Lyman Cyclone Case Dryer — Big Capacity, Fast Function

Lyman Cyclone Cartridge Brass drying Case Dryer

Here’s a product that should please handloaders who wet-tumble their brass with stainless media, or use ultrasonic cleaning machines to clean cartridge brass (and gun parts). Employing forced hot air circulation, the new Lyman Cyclone Case Dryer will dry a large quantity of brass in under two hours. Internal racks provide five drying levels. Now available for under $60.00 on Amazon, the Cyclone Case Dryer is a very affordable and effective addition to an ultrasonic or rotary-tumbler cleaning system.

Lyman Cyclone Cartridge Brass drying Case Dryer

The Lyman Cyclone Case Dryer works fast. No need to wait overnight (or longer) to air-dry your brass. Lyman states that “The forced heated air circulation of the Cyclone will dry your brass inside and out within an hour or two, with no unsightly water spots.” The handy individual trays keep different types of brass separate. The dryer can also be used for gun parts that have been ultrasonically cleaned.

Lyman Cyclone Case Dryer Features:
• Holds up to 1000 .223 Rem cases or 2000 9x19mm Luger cases
• Works with cartridge brass cases or gun parts
• Fast drying time — Typically 1 to 2 hours
• Timer control can be set up to 3 hours
• Durable ABS trays with recessed handles

Watch How Cyclone Case Dryer Functions with both Cartridge Brass and Gun Parts

Cyclone Case Dryer 115V (Part #7631560) MSRP: $86.25
Cyclone Case Dryer 220V (Part #7631561) MSRP: $86.25

Permalink Gear Review, Hot Deals, Reloading No Comments »
February 25th, 2022

Headspace — How to Measure This and Set Dies Accordingly

Brownells Headspace Gauge cutaway chamber drawing SAAMI ANSI

Do you know what the inside of a rifle chamber (and throat zone) really looks like? Do you understand the concept of headspace and why it’s important? If not, you should read the Brownells GunTech article Gauging Success — Minimum Headspace and Maximum COL. This article explains the basics of headspace and shows how to measure headspace (and length to lands) in your barrels with precision. The article also explains how to adjust your full-length sizing dies to “bump the shoulder” as needed.

Why is headspace important? The article explains: “Controlling headspace and setting proper C.O.L. also represent improved safety and reduced cost of handloading. Excessive headspace can cause case head separation and gases in excess of 60,000 PSI escaping from a rifle’s chamber. Too little headspace can result in a chamber forced bullet crimp and a bullet that becomes an obstruction more than a properly secured projectile. Excessive C.O.L. can result in a rifling-bound bullet, a condition that could result in spikes of excessive pressure.” [Editor’s NOTE: It is common for competitive benchrest shooters to seat bullets into the rifling. This can be done safely if you reduce your loads accordingly. With some bullets we often see best accuracy .010″ (or more) into the lands. However, this can generate more pressure than the same bullet seated .010″ away from initial lands contact. As with all reloading, start low and work up gradually.]

Brownells Headspace Gauge cutaway chamber drawing SAAMI ANSI

How is headspace specified? Most cartridges used within the United States are defined within ANSI/SAAMI Z299.3-4. Brownells explains: “In the case of the .243 Winchester, as an example, there are pressure specifications, cartridge drawings and, as pictured above, chamber drawings. Armed with a chamber drawing, each manufacturer producing a firearm for the .243 Winchester knows the proper standard dimension to cut chambers and set headspace. Notice there are two headspace reference dimensions for the chamber. The upper is a place in the chamber where the shoulder is .400″ in diameter; the “datum” or “basic” line. The lower is the 1.630″~1.640″ minimum – maximum dimension from the breech face (bolt face) to that point in the chamber that measures .400″.”

The actual headspace of any firearm is the distance from the breech face to the point in the chamber that is intended to prevent forward motion of a cartridge.

Finding Cartridge Length to Lands with OAL Gauge
Using a comparator on a set of calipers, you can quickly determine cartridge base-to-ogive length. This is the measurement from the base of the case to the forward-most full diameter section of the bullet, which is for convenience called the ogive. (Technically, the “ogive” is the full curve from bullet tip back to full-diameter ring). Shown here, that ogive is 0.243″ diameter.

The next step is using a modified (threaded) case with a Hornady OAL tool to determine Length-to-Lands (LTL) in your rifle’s chamber. During this measurement process, the modified case, with a bullet in its neck, is inserted in the chamber. Go slow, take your time. Here are 5 tips that will help you get repeatable and reliable LTL measurements:

1. Start with a clean chamber and clean barrel throat.
2. Make sure the modified case is fully screwed down and seated on the OAL Gauge. It can sometimes unscrew a bit during repeated measurements.
3. Insert the modified case slowly and gently, but ensure the shoulder of the modified case is fully seated on the end of the chamber.
4. Push the gray plastic rod GENTLY. It is common for the bullet to be tilted a bit. You want to allow the bullet to self-center in the throat BEFORE you apply much pressure. Then tap a couple times and push until you feel resistance. Do NOT push too hard — that will jam the bullet in the lands.
5. Repeat the measurement at least 3 more times. If you follow our instructions, you should, typically, get a repeatable measurement, within 0.0015″ or so, 3 out of 4 times.

Permalink Bullets, Brass, Ammo, Reloading No Comments »
February 22nd, 2022

30 BR Brass Perfected by Parosky — Expanded and Neck-Turned

paul parosky 30BR 30 BR Lapua cartridge brass neck-turned expanded 6mmBR processed benchrest score

Here’s good news for 30BR shooters. Paul Parosky, maker of the excellent PRP Custom Bullets, is now offering 30BR neck-turned brass. This can save you considerable time and effort forming 30BR cases from Lapua 6mmBR brass. And the neck-turning is superb, again representing time save (and no tools to buy). You will soon be able to order this 30BR brass from Bruno Shooters Supply. If you communicate with Amy at Bruno’s, Paul may be able to neck-turn to your specific thickness. Paul notes: “Here are necks turned for a 0.330 neck. I’ll try my best to accommodate anyone’s neck dimensions as they wish. Just message Amy Bruno Parosky (at Bruno’s) for details.”

paul parosky 30BR 30 BR Lapua cartridge brass neck-turned expanded 6mmBR processed benchrest score

About this Neck-Turning set-up — Paul Parosky notes: “For neck-turning I’m using an old drill press that has been re-worked. The cutter and spindle are all indicated before neck turning to ensure no runout. The RPM is around 520. The lube I use is a mixture of royal and mystery oil.”

Why the 30 BR Dominates 100/200 Benchrest for Score Competition
The 30BR, along with some wildcat variants, remains the dominant cartridge in short-range (100/200) benchrest-for-score competition. The 30BR’s .308″-diameter bullets are larger than the 6mm bullets used by the 6PPC (which rules group BR competition). The bigger 30-Cal diameter has an advantage in touching scoring rings. In addition, the 30BR is also relatively easy to tune, and barrel life is considerably better than with smaller-caliber benchrest cartridges. For more information, see our AccurateShooter 30BR Cartridge Guide.

30 BR 30BR cartridge benchrest competition

Cases are Expanded, Then Neck-Turned
To produce his 30BR brass, Parosky first uses a series of expander mandrels. Then he neck-turns with power using a converted drill press. Paul tells us: “This is done the old school way, I use three different tapered expander mandrels, then neck-turn it to the proper neck chamber, then run them up through a FL expander mandrel to ensure necks are straight. Then I clean all the cases.”

paul parosky 30BR 30 BR Lapua cartridge brass neck-turned expanded 6mmBR processed benchrest score

Paul Parosky Can Also Neck-Turn 6PPC Brass

Paul Parosky also expands and neck-turns 6PPC cases that are made from parent Lapua .220 Russian cartridge brass. Here, illustrating his 6PPC neck-turning operation, is a Paul Parosky post on the USA Benchrest & Extreme Precision Shooters Facebook page.

paul parosky 30BR 30 BR Lapua cartridge brass neck-turned expanded 6mmBR processed benchrest score

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February 20th, 2022

Sunday GunDay: .22 PPC for 300m Prone Competition

.22 PPC Rifle 300m prone

The 300 Meter .22 PPC — Smaller Caliber for Less Recoil

By GS Arizona
[This article originally appeared in Precision Shooting Magazine many years ago, but we are reprising it because the .22 PPC remains a notable cartridge for many disciplines, from benchrest to silhouette.]

I’ve spent the past few years pursuing the largely solitary pastime of 300 Meter shooting in the US. While it is a hugely popular sport in Europe, with thousands of competitors in each of various countries and overflowing national championships, in the U.S., 300 Meter shooting is simply a forgotten discipline. As an example, consider that the entry at the USA Shooting 300 Meter National Championships held at Fort Benning did not reach 20 competitors in [years past]. For those not familiar with the discipline, the 300 Meter ISSF target has a 100 mm ten ring, 200 mm 9 ring and so forth. That’s a 3.9″ ten ring at 328 yards for those of you who may object to the metric system, electricity and other intrusions upon a well settled universe (which ends at the dragons). [Editor’s Note: GS Arizona was a championship-class prone shooter, in both rimfire and centerfire disciplines, who had a popular online Blog, which has been closed.]

300 Meter Basics
300 Meter matches can be either three-position (prone, standing, kneeling) or all prone. Being of that age at which limbs aren’t limber and the mid-section obscures one’s view of the toes, I shoot prone matches only and leave the 3P to those for whom the term “shooting athlete” doesn’t produce an automatic smirk from the better half.

.22 PPC Rifle 300m prone

Like most 300 Meter shooters, I shoot a 6BR as my main rifle. As used in 300 Meter shooting, the 6BR is loaded with a 105-108gr bullet, with a velocity in the 2850 fps range. There is simply no cartridge out there at this time that delivers the accuracy, low recoil and ease of loading that can be had from the 6BR. That doesn’t mean we shouldn’t embark on a quixotic adventure now and then to find something better. This article is about one such search. So, if you don’t mind spending some time learning about an uphill struggle in a forgotten corner of the shooting world, pour a hot cup of coffee, get a plate of chocolate chip cookies and read on.

Getting Started–The Concept Behind the Project
The premise for building a .22 PPC was simple — less is more. Less recoil, that is, while retaining good ballistics and accuracy, should allow for higher scores. The hard part is meeting the ballistic and accuracy standards set by the 6BR. If pressed I might also admit to a desire to do something different. I made a decision early on in the project to stick to 80-grain bullets. I believe the 80 is pushing the envelope for safe and sane pressure in a case the size of the PPC; additionally, there are a number of manufacturers of 80-grain .224″ bullets so selection and testing can be more meaningful. Barrels are another consideration and all of the better barrel makers offer a 1:8″ twist .224 barrel (unlike the limited selection of 1:6.5″ twist required for 90 grain .224″ bullets).

With the basic parameters of a full-length .22 PPC case (reformed Lapua .220 Russian to be exact) and an 80-grain bullet established, a few other details needed attention. The first of these was specifying certain dimensions for the reamer maker. I chose not to change any of the essential dimensions of the .22 PPC such as headspace, shoulder angle or body taper, but there were a couple of areas that I felt needed to be different from the typical Benchrest PPC. These were neck diameter and throat length. With the outstanding quality of the Lapua brass, I elected to go with a 0.255″ neck diameter which would allow the use of unturned brass and still leave 0.002″ clearance around the neck of a loaded cartridge. The throat was specified longer than a standard PPC to allow for the length of the 80-grain bullets and avoid having the bullet go past the neck/shoulder junction.

300 Meter .22 PPC — Equipment List
Hardware
Action: RPA Quadlite, RPADefense.com.
Stock: Master Class Highpower Prone MasterClassStocks.com
Barrel: Broughton .224″ bore, 1:8″ twist, 30″ Palma contour
Rear Sight: Warner #1, Anschutz Iris, Warner-Tool.com
Front Sight: Gehmann Iris from Scott Riles
Trigger: Jewell 4 oz. one-stage
Bolt Knob: Keychain from 7-11 ($2.00)

Gunsmithing
Barrel fitting, sight, scope bases: Warner Tool Company.
Stock inletting, pillar bedding, and hardware: Alex Sitman,
Master Class Stocks.

Detours Along the Way
Like Quixote stumbling his way to his dreams, I’ve made a few mistakes. That 0.255″ neck diameter turned out to be the first. Turning brass isn’t a problem, but I was so captivated by the quality of the .220 Russian brass that I planned to skip turning or just take a light (0.001″) clean-up cut. Well, that’s fine, but as it turns out, PPC die makers assume you have turned necks and using unturned brass causes problems. The Redding Competition Seater, for instance, wanted to crimp the entire length of the neck onto the bullet. Turns out it was 0.250″ in the neck diameter of the sliding sleeve. This required reaming the sleeve which wasn’t too hard as the sleeve is made of relatively soft steel. Hand turning the chambering reamer with lots of care and oil took care of that problem. This opened up the neck to 0.255″ which might be 0.001″ more than ideal but I’ll live with it.

.22 PPC Rifle 300m proneSizing dies were another problem altogether. Forget using a non-bushing die with unturned brass–you’ll just overwork the neck to death. The Redding bushing dies worked well, though. Fired brass ends up at 0.254″ and is sized to 0.250″ in two steps (0.252″ and 0.250″) to maintain better concentricity.

I also got the throat length wrong as the base of the bullet (above the boat tail) is halfway up the neck and I want it just above the shoulder. I don’t know how I missed on that spec, but that’s what happened. As it turns out, the extra throat length hasn’t caused any problems with the Nosler 80, but it might with shorter or pointier bullets. Powder and primer choices became additional areas for demonstrating my inability to make good choices. You might think that adding a heavier bullet to an existing cartridge would be simple but it really turned into a full scale adventure.

Choice of Components and Smiths — Only the Best
Based on my previous favorable experience and that of a few friends, I ordered a Broughton barrel for the PPC, a .224″ bore 1:8″ twist, long enough to finish at 30 inches in what is generally referred to as a medium Palma taper. I haven’t been disappointed by the barrel: like all of those made by Tim North of Broughton Barrels, it is top notch. With the barrel and reamer in hand, they and the RPA Quadlite action were sent to Al Warner for barreling and then on to Alex Sitman for the stock. I can’t say enough good things about Alan’s metal work and Alex’s stock work. They have barreled and stocked many rifles for me over the years, all flawless. Alex’s Highpower Prone stock fits me like a comfortable moccasin. The trigger is a Jewell set at 4 oz., the rear sight is a Warner #1 and the front sight is a Scott Riles with a Centra aperture.

Eventually, the UPS man — purveyor of all things worth having — arrived with a long package and the real work began. Load testing and shooting can be a lot more frustrating than planning and talking to gunsmiths, but hopefully the eventual results make it worthwhile. I had a good supply of Nosler 80-grain bullets and some preconceived notions about powder and primers. Off to the loading bench.

Load Development + Accuracy Testing
Fire-forming the .220 Russian cases to the PPC chamber was a breeze: run an expander into the neck to get them to .224″, bump the shoulder 0.002″, load a caseful of IMR 4895 (about 23 grains) and insert a Nosler 77 (leftover from another project) and fire. I shot these at 100 yards while zeroing the rifle and was very impressed with the accuracy. Fouling was minimal, off to a promising start.

Once formed, I loaded the brass with Varget and the 80-grain bullets. Since Varget has given such good results in the 6BR, it was a natural starting point for this project. However, it quickly became evident that it might be too slow. While accuracy was excellent, powder fouling in the barrel was very heavy even at the highest charge tried (28.5 grains) and there was soot all the way down the shoulders of the cases. Cleaning the bore felt like patching a rusty water pipe after just 20 shots. I knew I’d never make it through a 60-shot match (about 70 shots with sighters) without cleaning[.]

Putting the .22 PPC to the Test in Competition
At this point, I took the PPC to a 300 Meter match with the Varget load. While it might not look perfect, I needed to try it. The first string was a 198 and I was able to clean the rifle immediately after firing. The second string was also a 198 but I had to fire the third string without cleaning. The effects of the fouling were evident in the last score, a 194.

While a 590 total isn’t bad for 300M, it was a bit below my average with the 6BR at this range – my home range that I knew well. More importantly, the score dropped as the group opened up in the third string when I wasn’t able to clean. At the Nationals all 60 shots are fired without a break for cleaning or additional sighters; therefore, Varget, while promising, wouldn’t work in the long run.

The next faster powder on my shelf was IMR 4895. I’d used it in the fire forming loads and if I had a lick of sense I would have tried it right away since the fire forming loads shot so well. However, stubbornly clinging to the preconceived notion that Varget was going to be a great powder for this combo cost me a month or so fooling with it. I then worked up loads with 4895 from 26.8 to 28.6 and saw that while 4895 was better suited to the case than Varget, it was still slow. The powder fouling was still occurring, though to a lesser degree. The shoulders still showed some soot, but less. I settled on 27.8 grains as a useful load and loaded 70 cases.

New Load for a New Home
At this point, I moved from Florida to Arizona causing a delay of several months in testing. The move also had an effect on the load as the hotter and drier climate in Arizona turned out to be much more suitable for 4895. Of course, I still had those 70 rounds loaded with 27.8 so I shot them in practice. Everything seemed OK but one primer (Federal 205M) pierced at the edge. I didn’t pay much attention to that as there were no other pressure signs and it was the first primer failure of any sort so far in this project. Extraction was fine, primer edges were nicely radiused and base growth was under two tenths. There was an opportunity to shoot a 500-yard prone match the following day so I reloaded the cases with the same load. At the match I pierced two more primers, this time right at the edge of the firing pin, causing two craters running into the firing pin hole. As you might imagine, all subsequent shots cratered into that area, although no more pierced.

I was contemplating a switch to Hodgdon Benchmark (slightly faster than H4895) until this point. Now, repairing the bolt face and switching to a tougher primer took priority. I loaded 25 rounds with CCI BR4 primers and 25 with Remington 7.5 primers. Both of these are well known for their tougher cups which I hoped would eliminate the piercing. I like the mild flash from the Federal 205 and believe it contributes to good accuracy, but I needed a primer that holds together more than I need to cut another tenth MOA. Bearing in mind that the powder charge itself might need reworking, I took those 50 rounds to the range to test them with the 27.8 gr. IMR 4895 load as it remains best to only change one thing at a time. Temperatures were in the 100 to 110 degree range during testing as they are for a good portion of the year here in Phoenix. If the load won’t work in hot temperatures, it just won’t work at all for me.

The primer testing at 200 yards showed the CCI BR4 primers to be better suited to this load than the Remington 7.5 primers. While no primer failed out of the 50 fired, the CCI BR4 primers gave distinctly better accuracy. I fired two ten-shot groups prone (scoped) with each, the Remington-primed groups averaged just over 1 MOA and the CCI-primed groups averaged 1/2 MOA. The difference between the two was principally in the amount of elevation in the groups. Given that result, as well as previous good experience with the CCI primers in the 6BR, I settled on the CCI BR4 primers for the PPC.

Final Testing at 500 Yards–It all Comes Together
While the purpose of the 80-grain PPC is 300 Meter shooting, those matches are somewhat hard to find so I’ve done most of my testing at 200 yards on the local public range (Ben Avery Shooting Facility in Phoenix) and at 500 yards in some of the local prone matches. With the primer issue potentially resolved, I went back to the 500-yard range to make sure the load held good elevation at that distance.

Final testing at 500 yards was a complete success. I fired one group of 24 shots from the prone position. Elevation for the bulk of the group was right at 3″ (0.6 MOA), the horizontal spread was somewhat larger as the group was fired in gusty, fast-switching conditions. The CCI BR4 primers functioned flawlessly, with no sign of pressure despite ambient temperatures over 100° F. None of this should be taken as a general statement of inadequacy of Federal primers. I have used (and continue to use) the very same lot of Federal 205M primers in my 6BR and have not experienced any problems at all. Simply stated, the 80-grain .22 PPC is an odd duck and has special requirements when fired under the conditions that prevail in my area.

At this point, I’ve determined that the basic premise of a .22 PPC for 300 Meter matches is perfectly viable, even if it is quite a bit more complex an undertaking than the 6BR. Recoil reduction over the 6BR was minimal, bordering on unnoticeable, but accuracy is on a par with the 6BR, perhaps slightly better. As a nice bonus, the PPC has proven to be quite useful for the 500-yard prone matches that are a regular part of the Phoenix shooting scene and it never fails to spark a good conversation with a new friend when I’m practicing or testing at the range. Future plans include testing Berger and Hornady 75 and 80-grain bullets and Hodgdon Benchmark powder. And, after conferring with your moderator, who ran some simulations in QuickLOAD, I’ll be trying Reloder 15 soon (QuickLOAD predicts RL15 allows 100% load density with good velocity). At some point I’ll also have the reamer reground for a shorter throat and tighter neck, but probably not until time comes to rebarrel.

6mmBR Norma versus .22 PPC

For the shooter who wants a superbly accurate, easy to load cartridge for 300 Meters to 600 yards, you simply can’t beat the 6BR. Everything you need, including brass, dies, reamers and knowledge are just a phone call away. The .22 PPC, by contrast, is an uphill struggle. The chambering reamer was custom ground to my specifications to allow unturned brass, as well as a longer freebore for the 75- and 80-grain bullets that are the heart of the project. The no-turn necks also meant that the Redding Competition Seater (an excellent unit) had to be reworked to allow for the thicker neck diameter. Once those hurdles were overcome I struggled to find the best powder for this combination–and I’m still searching. Unlike the 6BR where any of a half dozen or more powders will do the job (Varget, Reloder 15, N140, N540, IMR 4895, Norma 203B, etc.) the .22 PPC with heavy bullets has proven finicky with even the most accurate powders leaving fairly heavy carbon fouling.

Despite the problems, the .22 PPC offers a bit more pure accuracy than the 6BR and also a tiny bit less recoil. Both of these things can contribute to slightly higher scores in prone matches. However, to get the most out of the PPC, one must find the time to clean between 20 shot strings–a not inconsiderable effort sometimes in the mad rush of pit changes, scoring, shooting and just plain being tired.

This rifle was initially a .223 and when that cartridge proved unsatisfactory for my purposes, I had it rebuilt as the .22 PPC you see here. I like it and I enjoy the challenge, but I would not recommend this combination as someone’s primary rifle; it can get a bit frustrating. To put it into another context, the 6BR is like a 350 Chevy, it’ll just keep on doing the job forever, no matter what. The .22 PPC is like a Ferrari, it’ll scream when you do everything right, but it takes more attention to detail and a lot more maintenance. You wouldn’t want a Ferrari as your only car and likewise, you would be better off making the .22 PPC a second rifle.

Parting Shots — The .22 PPC vs. 6mm BR
If you’re looking for a simple, accurate and reliable cartridge for 200 to 600 yards, you probably can’t improve on the 6BR. However, if you’re someone who finds the journey as rewarding as reaching the destination, then you may very well enjoy a .22 PPC for prone shooting. While I received a great deal of help in this project from friends, gunsmiths, suppliers and parts makers far and wide, I really must acknowledge the huge debt we all owe to Ferris Pindell and Dr. Lou Palmisano. Without them there would be no PPC. We truly stand on the shoulders of giants.

Copyright © Precision Shooting Magazine and GS Arizona. Reprinted by permission.
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