For those who prefer to neck-size their brass (rather than full-length-size), the LEE Collet Die is a popular, inexpensive option. It works by having collet tangs or “fingers” press the neck against a central mandrel. The benefit is that you get a very straight neck, which is sized consistently from top to bottom. Canadian shooter Jerry Teo explains: “LEE Collet Dies produce sized cases with very low runout (measured runout is under .001″ using a Sinclair concentricity gauge). You also don’t get the build-up of brass at the base of the neck, as can happen with bushing neck dies. The neck-shoulder junction stays nice and crisp.”
TIP ONE — Adjusting Tension
LEE Collet dies don’t have a specific mechanical adjustment for neck tension. But you CAN easily modify the die to provide more or less tension. If you want to adjust the neck tension using a Lee Collet die, you can simply chuck the mandrel in a drill and reduce the diameter with some sand-paper (to increase neck tension) or you can order a mandrel the next caliber larger and turn it to whatever diameter you want (the larger the mandrel diameter, the less the neck tension). You can also order custom mandrels from Lee sized to any diameter you want.
Regarding neck tension, Boyd Allen makes an important point: “The only way to properly get more neck tension with collet dies is to either reduce the diameter of the mandrel, or order a smaller-diameter mandrel from Lee. I remind folks that adjusting the die position to have more toggle at the top of the ram stroke (not the factory recommended method), or leaning on the press handle with more force than recommended will NOT increase neck tension.”
Lee also offers Custom Collet Dies, made from two fired cases. Lee offers custom standard collet dies for $70.00 (plus S/H) and custom large collet dies for $160.00 (plus S/H). CLICK HERE to ORDER.
TIP TWO — Polish and Tune for Easy Case Removal
Some users have complained that their Collet Dies grab the case-neck too firmly, making the case hard to remove. There are solutions to this problem. First inspect the collet fingers and smooth the inner surface up a bit with polishing compound or an extra-fine sanding pad. Second, you can open up the fingers a little bit. LEE recommends that if your Collet Die is sticking, take a steel punch and tap the fingers apart a little bit so that the natural “unloaded” position is wider. Lastly, you should lightly lubricate the outside of the collet fingers (see arrows) before you re-assemble the die. This will ensure they slide smoothly. Also, to prevent the collet fingers from closing too tight, never load up the die with your press without putting a case in place first. Without a case neck between the collet fingers and the mandrel, the collet can clamp itself too tight as you raise the ram.
TIP THREE — Always Have a Case Inside When Operating Collet Die
Our friend Boyd Allen tells us that you need to follow directions and NEVER operate the die without a case inside. Boyd explains: “This is because doing so will spring the quadrents of the collet inward so that they interfere with the insertion of a case, and the user will have to figure out how to undo the damage if the die is to operate properly. This advice would not be needed if everyone read the instructions before using the die…. but many times, they don’t. Another thing that I tell new users is to take the die apart so that they will have a better chance of understanding how it works.”
TIP FOUR — Size Twice and Spin Your Case 1/8th Turn
After reaching fully “down” on your press handle, withdraw the case about an inch and manually rotate it about 1/8th (NOT 1/4 or 1/2) turn while still in the shell-holder, then size again. This will place the die’s collet petals on the four “high spots” of the case neck and will result in a rounder, more evenly-sized neck with slightly more bullet tension. This takes only about one second more per case and is well worth the slight extra effort. (We thank reader Stonecreek for this smart tip).
Here’s a good video that explains how to use a Lee Collet Die to Neck-Size .243 Win brass:
At the request of our readers, we provide select “Deals of the Week”. Every Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.
1. Amazon — Tipton Gun Butler, $14.82
Here’s a handy, portable gun caddy that works well for rifle maintenance chores at home or at the range. Save big right now — the Tipton Gun Butler is marked down to $14.82. That’s 45% off the regular $26.99 price. The Gun Butler offers a convenient platform for cleaning your gun or doing tasks such as scope mounting. Two removable, non-marring forks/cradles (which snap into the base) hold a gun securely in place, while compartments and slots hold solvents, jags, brushes, mops, and tools. The Gun Butler features a convenient carrying handle, and slip-resistant rubber feet. The base is solvent-resistant polymer. NOTE: The front cradle may not work well with wide benchrest fore-ends.
2. Grafs.com — All Rimfire Ammo 15% Off (.22 and .17 Calibers)
Stock up on rimfire ammunition this week. Grafs.com has slashed prices on all in-stock rimfire ammo — .17 caliber and .22 caliber. Save 15% on a huge variety of rimfire ammunition for plinking, hunting, and target applications. All brands in-stock are discounted 15%: Aguila, Browning, CCI, Eley, Federal, Fiocchi, Hornady, Lapua, Norma, Remington, SK, Winchester, Wolf, and more. While most discounted rimfire ammo is .22 LR, this sale also includes .22 Short, .22 WMR, .17 HMR, .17 WSM, and 17 Mach2.
3. MidwayUSA — Pro Series Competition Shooting Mat, $39.99
The MidwayUSA Pro Series Competition Shooting Mat is now on sale for just $39.99, 33% off the regular $59.99 price. The Pro Series mat measures a full 73.5″ x 35.5″. Zippered pockets on the front flap hold ammo or log books. And there are webbing “pockets” for bipod feet so you can pre-load your bipod with forward pressure. This quality mat boasts 0.35″ thick padding, multiple pockets, 6 grommets for staking, and a nice carry strap. It’s easy to transport, rolling up to about nine inches in diameter. NOTE: This mat is currently back-ordered, but MidwayUSA will honor the $39.99 sale price and inventories are expected very soon.
4. Brownells — SIG Kilo 850 Laser Rangefinder, $114.99
Need a very affordable laser rangefinder (LRF) for that fall hunt? Here’s a deal that’s hard to beat. The SIG Kilo 850 Rangefinder is on sale at Brownells for $124.99 and you can get another $10 off (plus free shipping) with CODE “NBM”. That lowers your final price to $114.99 delivered. This Kilo 850 rangefinder is rated to 1200 yards on reflective objects and 800 yards on trees. The unit has a 4x20mm monocular and delivers both line of sight (LOS) or angle modified range (AMR) in yards or meters. NOTE: For CODE “NBM” to work, you must add the code on the FINAL Payment Page.
5. Ruger — Ruger Precision Rimfire, $399.99
The Ruger Precision Rimfire .22 LR rifle is in high demand, but you CAN get one now for $399.99 from Sportsmans Outdoor Superstore (MSRP: $529.00). That’s a good deal — this rifle sells elsewhere for up to $470.00. For PRS shooters and Ruger Precision Rifle owners, this .22 LR rifle offers the same ergonomics as their centerfire tactical rig, making it great for rimfire cross-training. This PRS-style .22 LR rig features an adjustable bolt throw that lets shooters change from a rimfire 1.5″ bolt throw to a centerfire-like 3″ bolt throw, reducing the chance of short-stroking your bolt in competition. The Ruger Marksman trigger adjusts from 2.25 to 5.0 pounds.
6. Natchez — Rock Chucker Supreme Reloading Kit, $269.99
Everything you see above can be yours for just $269.99. Great Deal. Right now, Natchez is selling the Rock Chucker Supreme Master Reloading Kit for $269.99, a great price considering all the hardware you get: Press, Primer Tool, Scale, Powder Measure, Loading Tray, Reloading Manual and more. Heck, the Rock Chucker press alone is worth $160.00+. This is good starter kit for any reloader with sturdy items (like the Rock Chucker press), that will last a lifetime.
7. Natchez — Big Savings on Nikon Optics (Scopes, LRFs, Binocs)
Need a scope or LRF for hunting season? Here’s a chance to save hundreds on a quality Nikon optic. Natchez Shooters Supply is offering exclusive deals on both new and refurbished Nikon riflescopes, rangefinders, and binoculars including camo finish optics for hunters. There are some truly excellent bargains. Here are some of the best deals on Nikon scopes at Natchez right now:
8. Midsouth — Hornady LnL Auto Charge Scale/Dispenser, $158.99
The Hornady Lock N Load Auto Charge Electronic Scale/Dispenser is now on sale for just $158.99 at Midsouth Shooters Supply, discounted way down from the regular $226.24 price. That’s the lowest price we’ve seen on this product, making this a real bargain. If you are looking for an affordable combination digital scale and powder dispenser, check this out. By comparison, the RCBS ChargeMaster Lite sells for around $230.00. That means you can save around $70.00 by buying RED instead of GREEN.
9. CDNN — Ruger EC9S Carry Pistol, $229.99
Here’s a good little 9mm carry pistol for a crazy-low price. Right now, CDNN is selling the popular Ruger EC9S 9MM pistol for $229.99 — that’s $70 off the regular $299.00 price. This gun is light (17.2 ounces) and thin so it’s easy to carry discretely. The EC9S is 6″ overall with a 3.12″-long barrel. The EC9S features integral sights and ships with a single 7-round magazine.
10. Amazon — Two Rolls of 3″ Neon Target Stickers, $14.95
We like these bright, Neon 3″ target stickers. They are big enough to see easily at 600 yards, giving you a 1/2 MOA target center at that distance. For $14.95 at Amazon.com, you get 250 3″-diameter self-adhesive centers (125 targets per roll) that stick to almost any surface The high-contrast fluorescent red/orange color provides an excellent HI-VIZ aiming point, along with good contrast for bullet holes that fall within the 3″ circle. To help line up your reticle cross-hairs, the target centers feature black markers at 3, 6, 9, and 12 0’Clock. NOTE: These stickers may qualify for FREE Shipping with combined orders over $25.00.
Each Wednesday, the U.S. Army Marksmanship Unit (USAMU) publishes a reloading “how-to” article on the USAMU Facebook page. In this article, the USAMU’s reloading gurus address a question frequently asked by prospective handloaders: “Should I buy a single-stage press, or a progressive?” The USAMU says the best answer is Solomon-esque in both its wisdom and simplicity: “Get BOTH!” However, there is definitely more to the issue, as the USAMU explains below.
Progressive Press Safety Considerationsby USAMU Staff
Many are the beginning handloaders who have asked a friend about their “setting up” a progressive press for them. The idea is that the newbie could then just feed in components and crank out buckets of practice ammo without needing to really learn much about handloading. Tempting though this might be, that’s simply not how it works. Such an approach might be ok if there were never a malfunction with either press or operator, but that’s unrealistic. Our hypothetical newbie would then lack the knowledge to problem-solve most situations.
Worse yet, several different handloading operations would be occurring at different stations on the progressive press at the same time. It takes an experienced operator to keep track of, and truly understand the significance of, all those potential mini-problems. Loading without this experience is a recipe for potential disaster – such as a double powder charge (especially with pistol cartridges) dropped while the loader was attending to some other function, etc. Progressives are an animal unto themselves, and while they offer many benefits, they do take some getting used to – even by experienced handloaders!
ILLUSTRATIVE HORROR STORY
Here, enter a 40-year veteran handloader who decided to jump onto the progressive bandwagon late in his career, having used only single-stage presses all his life. A High Master NRA High Power Rifle competitor, he had no background in competitive pistol shooting, where historically most progressive presses are found.
Experienced Action Pistol shooters have typically encountered multiple episodes in which shooters “skipped” a powder charge for some reason, leading to a squib round and a bullet possibly lodged in the bore. Thus, at matches, it’s reflexive for them to yell “STOP!” in unison if they see a shooter get a “click” vs. a “bang”, and rack the slide to keep firing. This writer has personally seen several pistols saved in just such scenarios over the years.
Click No Bang — What NOT to Do
Our High Master set up a popular progressive press and began turning out .223 Rem 100-yard practice ammo with abandon. He was using a moly-coated 52gr match bullet and an economical, fast-burning surplus powder that gave great accuracy. Once on the range, he began practicing strings of rapid-fire. All was well, until he heard “Click!” rather than “Boom”.
Lacking the above experience or onlookers to halt him, he reflexively operated the charging handle on his expensive, custom NM AR15 Service Rifle, and the next trigger squeeze reportedly registered on seismographs over at least a three-state radius. He sat, uninjured but bewildered, until the hail of expensive bits and pieces quit raining down around him.
When the smoke cleared, he immediately cursed the horrid, evil, demonically-possessed progressive press for this, his first-ever reloading mishap. His $1400 NM upper was ruined, but thankfully, his $800 pre-ban lower… and he had escaped injury.
This tale is told not to discourage the use of progressive presses, but to emphasize the need to EASILY and IMMEDIATELY KNOW what is happening with the press at each station, every time the handle is cranked. Not to do so is, as they say, “bad ju-ju.”
It illustrates why we at the USAMU Handloading Shop agree in recommending that new handloaders should begin with a single-stage press. Once one thoroughly learns the steps in each phase of handloading by repeated experience, then one will be qualified to move on to a progressive press.
The single-stage press will REMAIN virtually indispensable for one’s entire handloading career, even after having purchased a progressive press (or two). There are endless small projects that are best handled on a single-stage press, and a poll of USAMU’s Handloading staff reveals that not one would willingly be without his single-stage press, despite owning at least one progressive.
High-BC MatchKings Tipped at Factory
Sierra recently released a new-for-2018, 95-grain .224 projectile, Sierra product #1396, with a claimed G1 BC of 0.600 — mighty impressive for a .22-caliber bullet. Next up is the new 6.5mm (.264 caliber) 150-grainer with an 0.713 G1 BC. This could be a game-changer for the 6.5-284 and new 6.5 PRC short magnum. There are also two new .308-caliber MatchKings, a 200-grainer with 0.715 G1 BC, and a new 230-grainer with a stunning 0.800 G1 BC. Many of these New Generation MatchKings now come “tipped” from the factory for more uniform BC.
One of the most important aspects of precision reloading is setting the shoulder bump during the full-length (FL) sizing process. You want the amount of “bump” to be precise and identical for every loaded round. However, when you switch brands of brass you may need to change the die position to get the desired bump and case body sizing. And even with the same brand of brass, you may find that you need to adjust your FL die as the number of brass load cycles increases. Brass that has been fired many times will behave differently than new or near-new brass.
Also, even with the same cartridge type, brass loaded for a semi-auto rifle may need more bump than brass fired in a bolt gun. For example, with .223 Rem ammo, you’ll normally want to push the shoulder back farther if the ammo will be shot in a AR15 as opposed to a bolt-action rig.
So how do you make all these needed adjustments for your full-length dies? You can move a conventional locking ring up and down, but that can be a tedious, trial-and-error process. Some guys use shims in one-thousandth intervals, but that still requires taking your dies in and out of the press. Well there is a better way now…
PMA Tool Micro-Die Adjuster
Wouldn’t it be great if you could precisely adjust your FL die up and down in half-thousandth increments, with a simple indexed click. That is now possible with products offered by PMA Tool and Whidden Gunworks. PMA Tool offers a Micro-Die Adjuster that replaces your existing lock ring and can be used with nearly any 7/8-14 full length sizing die. The engraved marks correspond to approximately .001″ of shoulder bump adjustment. Splitting the engraved marks is therefore approximately equal to .0005″ (half a thousandth). Users love this product, saying it adds precision and saves time.
Whidden Click-Adjustable FL Sizing Die System
Whidden Gunworks offers a complete click-adjustable FL sizer die with a special, indexed ring. With Whidden’s patent-pending Click Adjustable Sizer Die system, the die and lock ring work together to allow rapid, precise bump adjustments. One click changes the bump .001″. It’s simple and fast. Included with the Click Adjustable Sizer Die is a shoulder bump gauge. John Whidden (in video below) explains:
“There has become a need for an easier way to adjust the sizer die properly. Until now there have been few options other than trial and error to get the shoulder setback correct. Anyone who has done this can attest that it’s a slow and imprecise job! Our die and lock ring work together to give the user a clicking feel to the adjustment. Each click moves the shoulder bump .001” so you can easily find the exact shoulder bump that you desire.” — John Whidden
Conventional brass jags work great — except for one thing. They can react to solvents, leaving a blue “false positive” on patches. In recent years, jag-makers have experimented with many different materials in an effort to cure the solvent-reaction problem. Today we have polymer jags, nickel-plated jags, and stainless steel jags. And the latest innovation is the aluminum jag from Dewey.
J. Dewey Mfg. offers a series of “Copper Eliminator” jags and brush adapters made from aircraft-grade aluminum with the same hardness as brass. Dewey claims that its aluminum jags will not become embedded with grit or particles that could harm your bore. At the same time, Dewey’s aluminum jags will not react to ammoniated bore solvents that can turn patches blue green when used with brass jags. Dewey aluminum jags are offered with either male OR female 8/32 threads. The $5.25 aluminum jags and $3.70 brush adapters are offered in a wide variety of calibers. You can order from Dewey Mfg. or Sinclair Int’l.
Story Tip from Boyd Allen. We welcome submissions from our readers.
At the request of our readers, we provide select “Deals of the Week”. Every Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.
1. Midsouth — Major Brand Blem Tipped Bullets — Up to 45% Off
Midsouth is now offering big savings on major-brand blem bullets. These are overruns, cosmetically blemished jackets or tip discolorations, or factory second bullets from a major bullet manufacturer (Midsouth isn’t allowed to name the company). NOTE: Some projectile tips are misshapen, other packages may contain bullets which vary by grain weight. No matter what, you’re getting tipped hunting, or tipped match bulk bullets at huge savings. Many options in .243 (6mm), .257, .264 (6.5mm), .277, .284 (7mm), .308, and .338 calibers.
2. Brownells — Thompson Center T/CR22 — $249.99 With Rebate
Thompson Center’s new T/CR22 rimfire can use most Ruger 10/22 accessories including 10/22 mags. But it has some distinct advantages over the Ruger. The stock is a quality MagPul composite design. The barrel is button-rifled with a threaded muzzle. The bolt holds open after the last shot. This gun comes complete with front and rear iron sights as well as a Picatinny rail on the action. NRA reviewers praised this gun saying: “Thompson Center has taken the aftermarket parts you’re going to pay extra for [on a Ruger 10/22] and made them standard on the T/CR22, saving you some cash[.]” Right now the T/CR22 is on sale for $299.99 at Brownells with a $50 manufacturer REBATE, for a $249.99 cost after rebate. But it gets better — use CODE “N8Y” during checkout to save another $20 and get free shipping. Then your actual cost for the rifle (after discount and rebate), is $229.99 plus $10.00 FFL Processing fee.
3. Brownells — ATI GSG .22 LR FireFly Pistol (P226 Style)
If you like SIG Sauer P-series pistols, you’ll love this GSG .22 LR rimfire. It faithfully copies the lines and ergonomics of the classic P226 9mm handgun. Make by GSG in Germany, the ATI Firefly features a 4″ barrel, alloy frame, and steel slide. A simple blowback operating system provides reliable cycling with included 10-round magazine. The Firefly is on sale now at Brownells for just $179.99, marked down from $249.99. That’s a great price for a nice little rimfire that is offered in three finishes: Matte Black, Tan, and Dark Green. Weight: 1.53 pounds.
4. VihtaVuori — $5.00 Per Pound Rebate on Vihtavuori Powders
The 2018 VihtaVuori Rebate Program is under way. For a limited time, earn $5.00 back per bottle when you purchase VihtaVuori powders. Act soon as this offer expires on October 15, 2018. Be sure to keep your receipts and note the labels. The Rebate application MUST include proof of purchase showing retailer name and date of purchase. And the Rebate Form MUST include the serial number for each VihtaVuori bottle purchased.
VV Rebate Start Date: 8/15/2018
VV Rebate End Date: 10/15/2018
Postmarked By Date: 11/30/2018
Minimum Purchase: One 1-pound bottle
Maximum Purchase: Twelve 1-pound bottles
Maximum REBATE is $60.00
5. Natchez — Big Savings on Nikon Optics (Scopes, LRFs, Binocs)
Need a scope or LRF for hunting season? Here’s a chance to save hundreds on a quality Nikon optic. Natchez Shooters Supply is offering exclusive deals on both new and refurbished Nikon riflescopes, rangefinders, and binoculars including camo finish hunting scopes for hunters. There are some truly excellent bargains, plus you can get $5 Flat Rate Shipping with Code 180910 (through 9/12/18). Here are some of the best deals on Nikon scopes at Natchez right now:
Burris Scopes Also on Sale
Natchez also has many Burris scopes up to 60% OFF. For example the Burris XTR II 1-5x24mm riflescope is marked down from $799.00 to $459.99, a $339 savings!
6. Mossberg — 20% Off All Products in Mossberg Store this Week
Mossberg just announced a major fall season sale. Virtually everything in Mossberg’s online store is now 20% Off with CODE “FALL 20″. This includes stocks, barrels, triggers, sights, heat shields, magazines, apparel, range bags, gun cases, and much more. This is a great way to acquire quality accessories at bargain prices. This promotion runs through 10/11/2018. Mossberg Sale tip from EdLongrange.
NOTE: This sale does not apply to complete Mossberg rifles or shotguns. Those must be purchased through retail FFL dealers.
7. Stocky’s — LR Stocks with Aluminum Bedding Block, $179.99
Here’s a good deal on a versatile Stocky’s Long Range Stock with aluminum V-block bedding system. For just $179.99, order this for Rem/Rem Clone long actions or short actions, with either narrow or wide (varmint/tactical) barrel channel. This would be a good choice for a varmint rifle. This is also offered with handsome hydrographic or web-pattern baked-on textured finishes for $199.99.
8. Brownells — RCBS Rock Chucker Supreme Press, $130.99
The RCBS Rock Chucker Supreme Press is a classic single-stage press that will handle all hand-loading sizing and seating chores. There’s plenty of leverage to full-length size big cases. The rigidity of this cast-iron press also allows precise, repeatable bullet seating. While we prefer to prime as a separate operation, you CAN prime your cases with the Rock Chucker. Right now this press is on sale at Brownells for $140.99. However, with CODE “NBM” you save $10 and get FREE Shipping. That way your net cost is $130.99 delivered. This same press sells elsewhere for up to $165.00.
9. Amazon — 12″x12″ Splatter Grid Targets, 10 for $9.99
This 12″x12″ Splatterburst Target combines splatter shot marking with a grid background, with five aiming points. The bright neon shot circles make it easy to see your shots. And the handy grid lets you quickly estimate your group size. Get a 10-pack for $9.99, or a 25-pack for $17.99 (better deal). This particular target has earned rave reviews — 87% of verified buyers gave this a FIVE-Star rating. One example: “Excellent quality and durability. The adhesive is really strong. High contrast makes down range targeting easy and the splatter contrast is [great].”
Photo 1: Three Near-Equal-Weight 7mm Bullets with Different Shapes
TECH TIP: Bullets of the same weight (and caliber) can generate very different pressure levels due to variances in Bearing Surface Length (BSL).
Bullet 1 (L-R), the RN/FB, has a very slight taper and only reaches its full diameter (0.284″) very near the cannelure. This taper is often seen on similar bullets — it helps reduce pressures with good accuracy. The calculated BSL of Bullet 1 was ~0.324″. The BSL of Bullet 2, in the center, was ~0.430”, and Bullet 3’s was ~ 0.463″. Obviously, bullets can be visually deceiving as to BSL!
This article from the USAMU covers an important safety issue — why you should never assume that a “book” load for a particular bullet will be safe with an equal-weight bullet of different shape/design. The shape and bearing surface of the bullet will affect the pressure generated inside the barrel. This is part of the USAMU’s Handloading Hump Day series, published on the USAMU Facebook page.
Beginning Handloading, Part 13:
Extrapolating Beyond Your Data, or … “I Don’t Know, What I Don’t Know!”
We continue our Handloading Safety theme, focusing on not inadvertently exceeding the boundaries of known, safe data. Bullet manufacturers’ loading manuals often display three, four, or more similar-weight bullets grouped together with one set of load recipes. The manufacturer has tested these bullets and developed safe data for that group. However, seeing data in this format can tempt loaders — especially new ones — to think that ALL bullets of a given weight and caliber can interchangeably use the same load data. Actually, not so much.
The researchers ensure their data is safe with the bullet yielding the highest pressure. Thus, all others in that group should produce equal or less pressure, and they are safe using this data.
However, bullet designs include many variables such as different bearing surface lengths, hardness, and even slight variations in diameter. These can occasionally range up to 0.001″ by design. Thus, choosing untested bullets of the same weight and caliber, and using them with data not developed for them can yield excess pressures.
This is only one of the countless reasons not to begin at or very near the highest pressure loads during load development. Always begin at the starting load and look for pressure signs as one increases powder charges.
Bullet bearing surface length (BSL) is often overlooked when considering maximum safe powder charges and pressures. In photo 1 (at top), note the differences in the bullets’ appearance. All three are 7mm, and their maximum weight difference is just five grains. Yet, the traditional round nose, flat base design on the left appears to have much more BSL than the sleeker match bullets. All things being equal, based on appearance, the RN/FB bullet seems likely to reach maximum pressure with significantly less powder than the other two designs.
Bearing Surface Measurement Considerations
Some might be tempted to use a bullet ogive comparator (or two) to measure bullets’ true BSL for comparison’s sake. Unfortunately, comparators don’t typically measure maximum bullet diameter and this approach can be deceiving.
Photo 2: The Perils of Measuring Bearing Surface Length with Comparators
In Photo 2, two 7mm comparators have been installed on a dial caliper in an attempt to measure BSL. Using this approach, the BSLs differed sharply from the original [measurements]. The comparator-measured Bullet 1 BSL was 0.694” vs. 0.324” (original), Bullet 2 was 0.601” (comparator) vs. 0.430” (original), and Bullet 3 (shown in Photo 2) was 0.602” (comparator) vs. 0.463” (original). [Editor’s comment — Note the very large difference for Bullet 1, masking the fact that the true full diameter on this bullet starts very far back.]
Gunsmith Darrell Holland sells a priming tool that upgrades the RCBS Auto Bench Priming Tool with key features — including primer seating depth control. If your hand starts to hurt after priming dozens of cases with a hand-held, squeeze-type priming tool, you may want to consider Holland’s invention, which he calls the “Perfect Primer Seater” (PPS).
Holland basically has modified the RCBS lever, adding a precise crush control and a means of measuring depth with a gauge. He claims this gives “an EXACT primer seating depth based on primer pocket depth and primer thickness”. With Holland’s PPS, primer seating depth is controlled with a rotating wheel that limits lever travel in precise gradations. You can buy the complete priming system for $215.00, or, if you already own the RCBS Auto Prime tool, you can purchase an adapter kit (with base, arm, adjuster, and gauge etc.) for $120.00. To order, visit Hollandguns.com. Click on “Reloading Equipment”, and look for the Perfect Primer Seater. Scroll down to the bottom of the page to add items to the shopping cart.
User Review by Tommy Todd
Sierra Bullets’ Chief Ballistician Tommy Todd acquired the Holland Perfect Primer Seater, and gave it a positive review. Todd writes: “This cartridge case priming system allows you to measure the primer pocket depth and adjust the seating tool to match the primer seating depth for a contact fit with a measured lot of primers to the cases you are working with. Mr. Darrell Holland has taken a standard RCBS automatic bench-mounted priming tool and modified it to a new level of precision. The modifications allow you to measure the primer pocket depth, primer height, and with the addition of an adjustable stop on the priming tool achieve precision primer seating, rather than how the primer ‘feels'[.]
If you are already utilizing the RCBS priming tool, Mr. Holland offers an adapter kit to upgrade your equipment. If you are looking for a new priming unit, I suggest giving this product a try. Increasing consistency when seating primers should result in smaller groups[.]”
Western Powders (which sells Accurate, Ramshot, and Norma powders) has published an article on case inspection and preparation. There are many tips in this article that can be useful to precision hand-loaders. For example, every time you open a new box of cartridge brass (particularly from domestic makers), you should inspect each case for flaws.
TIP ONE: Visual Inspection — Finding Flaws
Cases are mass-produced items and malformed ones are relatively common. Inspect each case carefully looking for obvious defects. A bench-mounted magnifying glass with light is a real help for the over-40 crowd. The main defects will be cracks in the neck or case body, crushed shoulders or deep creases in the neck. Next check the primer pocket. It is also fairly common to find flash holes that are damaged or, more rarely, not concentric to the primer pocket.
Imperfections like small dings in the case body, or necks that are not completely symmetrical do not have to be eliminated at this step. Damage of this sort is usually from loose packaging and usually has not seriously damaged the brass. [Running an expander mandrel in the neck] and fire-forming will iron out these largely cosmetic issues.
The Western Powder article also talks about primer pocket uniforming. We do NOT normally uniform the pockets for Lapua or RWS brass from the start. However, pocket uniforming can be beneficial with some other brands of brass, including Lake City, Remington, and Winchester. If you shoot milsurp brass, set time aside for pocket uniforming.
TIP TWO: Primer Pocket Uniforming Like flash holes, primer pockets are mass-produced and prone to small dimensional changes. A uniforming tool is used to make the depth of each primer pocket consistent. In turn this allows similar firing pin strike depths on the primer which creates more consistent ignition characteristics.
A good uniforming tool should have a shoulder, or another positive stop, that sets the cutter’s depth. Its use is pretty straightforward. The cutter is inserted into the pocket and turned clockwise several times until the stop in flush with the case head and no more brass is removed from the juncture of the pocket’s base and sidewall. This a job best done by hand. You will feel when the cutting is finished by a change in how smoothly the cutter turns in the pocket. Very little material is actually removed; usually just enough to square the radius at the bottom of the pocket.
TIP ONE — Adjusting Tension
TIP TWO — Polish and Tune for Easy Case Removal
User Review by Tommy Todd
Like flash holes, primer pockets are mass-produced and prone to small dimensional changes. A uniforming tool is used to make the depth of each primer pocket consistent. In turn this allows similar firing pin strike depths on the primer which creates more consistent ignition characteristics.
