Written by Sierra Bullets Ballistic Technician Duane Siercks
One of the first things new reloaders notice is that load data varies between reloading manuals. The Sierra Bullets Technicians frequently get inquiries asking us to explain why the load data appears to be inconsistent. This article explains five key factors that can influence published load data.
Example of load data variances for two 168 grain bullets:
Here are five reasons why the load data varies:
The Bullet
Basically, the similarities in the .30 caliber 168 grain Match bullets (for example) end with weight and diameter. The bullets likely have dimensional differences such as bearing surface length. Bearing surface has a large effect on pressure and velocity. There are also differences in boat tail, flat base, ogive and over-all lengths, which each help determine the cartridge over-all-length (COAL). With different COAL’s, we can expect changes in pressure and velocity also. In some calibers there are differences in bullet diameter with different bullet manufacturers.
It is also worth noting that bullet manufacturers do not all use the same copper alloy for their jackets. This produces more or less friction that results in load pressures and velocities. The solid copper bullets also vary quite a bit in comparison to a lead core and copper jacketed bullet.
The Gun
Each gun is unique, even if you are using the same make, model, and caliber. Special consideration should be used to consider that not all firearm chambers are the same either, creating more variables that need consideration. There can be drastic differences in the throat length. This controls the amount of “jump” that a bullet experiences when the cartridge is fired.
The Powder
Within normal manufacturing tolerances, you can see some variation in a given powders burn rate between different lots of the same powder. So naturally when two different Manuals are produced, it would be doubtful that the same lots would be tested.
The Cartridge Cases
New cases are almost always near minimum specs in dimension. A load fired in a new case would likely have slightly more pressure that when fired in a re-sized case. This would certainly be true if we were loading into fire-formed cases that have had minimal re-sizing done. Fired cases that are full length resized most of the time be slightly larger than the new unfired cases. This gives you differences in case capacity. The same powder charge placed within a new case and a full length resized case will produce different pressure levels and probably different velocities.
Conditions
Temperature can cause pressure increases or decreases. Hot temperatures tend to cause pressures to increase, while cold temperatures will usually do the opposite. Humidity and altitude can impact pressures and velocities likewise.
Conclusion
As you can see, an amazing number of variables effect any load combination. With the differences in the manuals, you’re just seeing firsthand examples of what took place when the data was collected with that particular set of components and firearm. Think of a reloading manual as a report. In essence, a reloading manual says, “We tried this particular component combination, and these are the results we obtained.”
Remember that you may or may not reach the same maximum load safely. There is no “one load fits all bullets.” The minimum load data offers a safe place to start. The maximum load data listed should always be regarded as a safety guideline and not necessarily a goal! Your gun should shoot accurately without breaching the maximum load data. The best advice is: always start low and work your load up!
If you have questions about variances in load data or other reloading questions, please call our ballistic technicians at 1-800-223-8799 or send us an email at sierra [at] sierrabullets.com.
In the past few years, the 6.5 Creedmoor cartridge has become the leading cartridge for tactical/practical gun games. It offers excellent ballistics, moderate recoil, and good accuracy with a variety of powder and bullet combos. Along with the 6.5×47 Lapua, the 6.5 Creedmoor has demonstrated that a .264-Caliber mid-sized caliber is truly a jack of all trades — it can be accurate on paper, win PRS matches, and also harvest game during hunting season. If you own a 6.5 Creedmoor (or plan to get one) and hand-load your ammo, this post should provide a good start. Sierra Bullets now offers 6.5 Creedmoor Load Data for bullets from 120 to 142 grains — the most popular weight range for this chambering.
Sierra Bullets has released very complete load data for the popular 6.5 Creedmoor cartridge. This medium-sized cartridge has become one of the most popular chamberings for tactical and PRS shooters. The 6.5 Creedmoor combines excellent accuracy, good mag-feeding, good barrel life, moderate recoil, and reasonable component cost. That’s why this cartridge has caught on quickly.
The Springfield M1A is now available in 6.5 Creedmoor. For Gas Guns like this, be sure to full-length-size your brass after every firing, with adequate shoulder bump.
Developed in 2007 by Dennis DeMille and Dave Emary, the 6.5 Creedmoor is a shortened and improved 30 TC cartridge case that was inspired by the .308 Winchester design. This short action design was created to maximize case capacity and a wide range of loading lengths, while still fitting in standard short action magazines. With the correct twist barrel, the versatile 6.5 Creedmoor can take advantage of the wide range of bullet weights available in 6.5 mm (i.e. .264 caliber). Reloaders should keep in mind that the 6.5 Creedmoor works best with medium to medium-slow powders such as H4350, Varget, Win 760, and RE-17. The light recoil and adaptability of the efficient 6.5 Creedmoor cartridge has already proven itself in high power, precision rifle series and benchrest competitions. Couple that with respectable barrel life and its intrinsic accuracy potential and you have a recipe for success which should insure its legacy for decades to come.
Here are three tables from the Sierra Bullets Reloading Manual (5th Edition). IMPORTANT — This is just a sample!! Sierra has load data for many other 6.5mm bullet types, including FB, Spitzer, SBT, HPBT, and Tipped MK from 85 grains to 142 grains. To view ALL 6.5 Creedmoor DATA, CLICK HERE.
INDICATES MAXIMUM LOAD – USE CAUTION
LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED.
INDICATES MAXIMUM LOAD – USE CAUTION
LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED.
INDICATES MAXIMUM LOAD – USE CAUTION
LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED.
Shown is the Redding Model 15-P Competition Piloted Inside Chamfering Tool with pilot rod that centers in the case flash hole. Also shown is a Forster 45° Rocket Tool.
There are a wide variety of reloading tools designed to cut a slight chamfer in case necks and deburr the edge of the case mouth. You don’t need to spend a lot of money for an effective tool. A basic “rocket-style” 45° chamfering tool, such as the Forster, actually does a pretty good job taking the sharp edge off case mouths, particularly if you use a little scotch-pad (or steel wool) to smooth the edge of the cut. The Forster chamfer tool, shown below, is a nicely-made product, with sharper cutting blades than you’ll find on most other 45° chamferers. It costs $17.99 at Brownells.com.
Redding sells a handy piloted chamfering tool with a 15° inside cutting angle and removable accessory handle. This Redding Model 15-P chamferer works really well, so long as you have consistent case OALs. The pilot rod (which indexes in the flash hole) is adjustable for different cartridge types (from very short to very long). This ensures the concentricity of the inside neck chamfer to the case mouth. This quality tool works with cases from .22 to .45 Caliber.
Sinclair International offers a 28° carbide chamferer with many handy features (and sharp blades). The $29.99 Sinclair Carbide VLD Case Mouth Chamfering Tool will chamfer cases from .14 through .45 caliber. This tool features a removable 28° carbide cutter mounted in the green plastic Sinclair handle. NOTE: A hex-shaft cutter head power adapter can be purchased separately for $14.99 (Sinclair item 749-002-488WS). This can be chucked in a power screwdriver or used with the Sinclair Case Prep Power Center when doing large volumes of cases.
Many folks feel they can get smoother bullet seating by using a tool that cuts at a steeper angle. We like the 22° cutter sold by Lyman. It has a comfortable handle, and costs just $10.75 at MidsouthShooterssupply.com. The Lyman tool is an excellent value, though we’ve seen examples that needed sharpening even when new. Blade-sharpening is easily done, however.
K&M makes a depth-adjustable, inside-neck chamferer (“Controlled Depth Tapered Reaper”) with ultra-sharp cutting flutes. The latest version, which costs $47.00 at KMShooting.com, features a central pin that indexes via the flash hole to keep the cutter centered. In addition, the tool has a newly-designed handle, improved depth-stop fingers, plus a new set-screw adjustment for precise cutter depth control. We caution, even with all the depth-control features, if you are not careful, it is easy to over-cut, slicing away too much brass and basically ruining your neck. We think that most reloaders will get better results using a more conventional chamfer tool, such as the Forster or Redding 15-P.
One last thing to note — tools like the K&M and the Sinclair chamferer are often described as VLD chamferers. That is really a misnomer, as bullets with long boat-tails actually seat easily with very minimal chamfering. In reality, these high-angle chamferers may be most valuable when preparing brass for flat-base bullets and bullets with pressure rings. Using a 22° or 28° chamferer can reduce the risk of cutting a jacket when using VLD bullets though — so long as you make a smooth cut.
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. Sportsmans Outdoor — T/C Rifle with Vortex Scope, $324.99
Here is a truly great package deal. Right now get a Thompson/Center Arms (T/C) Compass rifle with Vortex 4-12x40mm Diamondback scope for $399.99. But there’s more — this package qualifies for a $75 T/C factory rebate. That lowers your net cost to just $324.99, so you’re effectively getting the rifle for under $200.00! Available chamberings are: 22-250, 6.5 Creedmoor, 7mm-08, .308 Winchester, .30-06 Springfield, .300 Win Mag. If you don’t need a scope, you can also get the Thompson Center Compass for just $224.99 (after Rebate) in a variety of calibers. The Thompson/Center Arms Aim To Save Rebate program is valid from 1/1/2018 until 4/30/2018. REBATE TERMS HERE.
Ruger Precision Rifle, 6.5 Creedmoor, $998.00 complete — what’s not to like? If you’ve been thinking of purchasing a Ruger Precision Rifle (RPR) chambered for the 6.5 Creedmoor cartridge, here’s the best deal we’ve found in recent months. Right now Gunprime.com is offering this poular tactical rig for under $1000.00, in the high-demand 6.5 Creedmoor chambering. Heck of a bargain boys — you can pay $1300 or more elsewhere for the same rifle. This is a good choice for the PRS production class, or you can take in to another level of performance with a Pre-Fit 26″ cut-rifled barrel from Krieger. This is the lastest RPR Gen 2 version with the upgraded handguards. NOTE: GunPrime also has the RPR in 6mm Creedmoor for $1018.45.
3. Amazon — Plano Tactical Rifle Case, $67.99
This Plano All-Weather Tactical Rifle Case is an Amazon Best Seller for good reason. It offers the functionality and durability of an SKB-type hard case for HALF the money. This is under $70.00, while the equivalent SKB is around $220.00, so you can buy three Planos for the price of one SKB. The 43″-long interior will fit most ARs and many hunting/varmint rifles (measure your own rifle to make sure). The handles are convenient and beefy and the wheels make this case easy to move through airports and parking lots. This is a very tough, roomy case for the money. Dimensions: 43″ X 13″ X 5″ (Interior); 46″ x 16″ x 5.5″ (Exterior).
Bushnell’s highly-regarded Elite 4500 Series scopes offer good performance and reliability for the price. Here’s a great deal on a Demo Bushnell 8-32x40mm Elite 4500 with Multi-X Reticle and 1″-diameter main tube. This would be a good choice for an F-Class or long-range varmint rifle. We’ve used this scope in a 600-yard Benchrest match and it worked well, though we would prefer a reticle with MOA-based hold-off marks. We do like the 1/8-MOA clicks for precision target work. NOTE: Natchez also has 6-24x40mm Bushnell 4500 Elite zoom scopes on sale now for just $329.99 (with Multi-X Reticle). That’s a crazy low price for an optic this good.
5. MidwayUSA — Pro Series Padded Shooting Mat, $29.99
Here’s a heck of a deal on a good shooting mat. MidwayUSA has slashed the price on its Pro Series Shooting Mat (in Olive Drab). Get this 73.5″ x 35.5″ padded mat for just $29.99. This Mat has nice features, such as a Bipod Pre-load Web, 0.35″ thick padding, multiple pockets, and 6 grommets for staking. It’s easy to transport, rolling up to about nine inches in diameter and fitted with a nice carry strap. Midway normally sells this Pro Series Mat for $59.99, so the current $29.99 price is a great deal. If you need a good basic shooting mat, check out this deal.
6. Midsouth — Nosler Factory Seconds, Save up to 30%
Nosler Factory Seconds are now available at Midsouth Shooters Supply. These bullets are completely functional (with correct weights and dimensions), with only minor cosmetic blemishes. You’ll find slight tip discolorations, water spots, and little else. The Accubond and Ballistic Tip bullets will work great for hunting — your prey won’t care about the water spots. Available bullets include popular calibers: 55gr 6mm Varmageddon, 140gr 6.5mm 140 tipped Accubond, 168gr and 175gr 7mm tipped Accubond, and 180 gr .308 caliber Spitzer Accubond. NOTE quantities are limited and these factory seconds blems always go fast. Once they are gone, they’re GONE!
7. Stocky’s Stocks — M50 Hunting Stock with AccuBlock, $219.00
Here’s a very new product from Stocky’s Stocks, at a very good price. This new M50 Monte Carlo-style hunting stock for Rem 700-type actions offers great features you won’t find on some other stock costing three times as much. The action is supported by a built-in Aluminum Accublock chassis. The comb is adjustable for height, and the stock comes with a nice “Softkick buttpad”. A variety of premium finishes are available. If you are thinking of re-stocking your Rem 700 rifle or building a new hunting rig with a Rem 700 clone, this is an excellent choice — an outstanding value.
8. Amazon — Jiallite Scope Bubble Level, $11.29
If you shoot long range, you need a scope level. This nicely designed Jiallite Scope Bubble Level is fully CNC-machined to close tolerances for a good fit. It features a 30mm milled inside diameter, plus an inner insert ring so it will also fit 1″-diameter main tubes — that dual-diameter versatility is a nice feature. We also like the way the unit is nicely radiused, and has a low profile in the middle. User reviews have been very positive. You could easily pay $35.00 or more for a 30mm scope level. Purchasers have praised this product: 89% of verified buyers rated this five stars.
9. Brownells — Save Money Codes plus Free Shipping
Planning to do some shopping on Brownells.com? You can save up to $60.00 on your purchase with these discount codes. Plus you get free shipping — can’t complain about that. For orders $200+ use code M2H to save $20. For orders 400+ use code M2J to get $40 off, and for orders $600+ use Code M2K to save $60. NOTE: Don’t dawdle if you want to take advantage of these savings. The discount codes expire 1/8/2018 at 11:59 pm CST.
Vihtavuori offers free reloading data online, and through a free Mobile App. And now those resources are even better — Vihtavuori has completed a significant enhancement of its reloading information for hand-loaders. First, the Finnish powder company has added the new N565 powder to the data tables. But that’s just for starters.
A massive update has been completed with new bullets added for dozens of popular calibers: “We are happy to announce the addition of more than 130 lines of reloading data, with bullets by Barnes, Brenneke, Lapua, Berger, Sierra, Woodleigh, Hornady, Nosler and LOS”. The updated online information supplements the online Reloading Databases, which has dedicated sections for Rifle Cartridges, Pistol Cartridges, and Cowboy Action.
The U.S. Army Marksmanship Unit (USAMU) has published a great series of reloading “how-to” articles on its Facebook Page. This post covers key factors to consider when loading ammunition for Match Rifles and Service Rifles, with a particular focus on self-loading “gas guns”. Visit the USAMU Facebook Page each Wednesday for other, helpful “Handloading Hump-Day” tips.
We offer some “cardinal rules” to help new gas-gun handloaders with safety and efficiency. These address both Match Rifle and Service Rifle versions of the AR15, M1 Garand, M1A, and M110. However, they can also improve safe reloading for many other auto-loaders such as M1 Carbines, FALs, SIGs, etc. The author distilled these principles many years ago to help focus on the essential aspects of these rifles.
RULE ONE: Service Rifles Are Not Benchrest Rifles
Gas-guns require a relatively loose fit between ammunition and chamber (vs. bolt actions) for safe, smooth operation. Many techniques, such as neck sizing and keeping cartridge headspace quite tight, are popular in the extreme bolt gun accuracy realm. However, they are of little value with Service Rifles, and some could even be hazardous. Before adopting a specialized technique, seriously consider whether it is appropriate and beneficial in a gas-gun.
RULE TWO: Never Compromise Safety to Obtain Accuracy
Example: If choosing a brand of great, but ultra-sensitive match primers offers possibly better accuracy at the risk of slam-fires in your design of rifle, don’t do it! You are issued exactly two eyes and ten fingers (best-case scenario). Risking them trying to squeeze 0.25 MOA better accuracy out of an M1A, etc. simply isn’t worth it.
RULE THREE: Tailor the Precision to Your Individual Skill and Your Rifle’s Potential
This has been addressed here before, but bears repeating for newcomers. If you are struggling to break out of the Marksman Class, or using a CMP M1 “As-Issued,” then laboriously turning the necks of your 600-yard brass is a waste of time. Your scores will improve much faster by practicing or dry-firing. On the other hand, if the reigning champions anxiously check your scores each time you fire an event, a little neck-turning might not be so far-fetched.
Verifying Load Improvements — Accuracy hand-loading involves a wide variety of techniques, ranging from basic to rather precise. Carefully select those which offer a good return on investment for your time and labor. In doubt? Do a classic pilot study. Prepare ammo for at least three or four ten-shot groups with your new technique, vs. the same with your standard ammo. Then, pick a calm day and test the ammo as carefully as possible at its full distance (e.g. 200, 300, or 600 yards) to verify a significant improvement. A little testing can save much labor!
RULE FOUR: Be Your Own Efficiency Expert
Serious Service Rifle shooters generally think of ammunition in terms of thousands of rounds, not “boxes”, or even “hundreds”. Analyze, and WRITE DOWN each step in your reloading process. Count the number of times each case is handled. Then, see if any operations can be dropped or changed without reducing safety or accuracy. Eliminating just two operations saves 2000 steps per 1000 rounds loaded. Conversely, carefully consider any measurable benefits before adding a step to your routine.
RULE FIVE: In Searching for Greater Accuracy with Efficiency, Look for System Changes
For example, instead of marking your 300-yard rounds individually to differentiate them from your 200-yard ammo, would a simple change in primers work? If accuracy is maintained, using brass-colored primers for 200 and silver for 300 provides an indelible indicator and eliminates a step! Similarly, rather than spending hours selecting GI surplus brass for weight and neck uniformity, consider splurging on some known, high-quality imported match brass for your 600-yard loads. Results should be excellent, time is saved, and given limited shooting at 600 yards, brass life should be long.
RULE SIX: Check All Your Primers Before Packaging Your Loaded Ammo
This seems simple and even intuitive. However, many slam-fires (which were much more common when M1s and M1As were the standard) are due, at least in part, to “high” primers. Primers should be seated below flush with the case head. The USAMU has addressed this at length in a previous column, but each round should be checked for properly-seated primers before they are packaged for use.
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 — Sightron 10-50x60mm SIII, as Low as $939.00
Need a high-magnification scope for long-range competition? Among quality scopes with 40+ power, we think the Sightron SIII 10-50x60mm scope is the best value on the market. These scopes are available through Amazon.com for under $940.00. That’s about half the price of a Leupold 7-42x56mm VX-6, and 40% of the cost of a Nightforce 15-55X competition model. The Sightron is a good product with a lifetime manufacturer’s warranty. And it works — at the 2017 IBS 600-yard Nationals, 4 of the Top 10 shooters (including the 2nd-place finisher) used Sightron 10-50X scopes. Though reasonably priced, this 10-50x60mm optic is definitely good enough to win long-range benchrest and F-Class matches.
MOA-2 Reticle
Target Dot Reticle
Fine X-Hair Reticle
Mil-Dot Reticle
NOTE: There are a variety of reticle options and both 1/4-MOA and 1/8-MOA click versions are offered. Read the product description carefully when ordering to be sure you’ve selected your preferred reticle type and click value.
2. Natchez — Special 5 Reloading Press Kit, $199.99
Looking for a great holiday gift for a family member getting started in metallic cartridge reloading? This RCBS Kit has everything a new reloader needs: single-stage press, powder measure, scale, powder trickler, priming tool, cartridge tray, “rocket” chamfer tool, case lube and more. This is an excellent entry-level reloading kit, on sale for just $199.99 at Natchez Shooters Supplies. We like the relatively compact Special 5 press for most reloading duties. Eventually you may want to add an additional, large heavy press, but this will get the job done. For the combined package, with all the tools one needs to hand-load quality ammo — this is a stunningly good deal at $199.99. This also qualifies for an RCBS Rebate (see next item).
3. RCBS — 2017 Buy Green Get Green Rebate Program
Act quickly — RCBS’s best rebate program of 2017 runs out at 11:59 pm on December 31st. The Holiday 2017 Buy Green Get Green promo is simple — buy ANY RCBS product over $49.99 and you qualify. There’s no restricted list of “qualifying” products. The more you spend, the more you get back — up to $175.00 total. If you are considering purchasing a single-stage press, electronic powder dispenser, progressive press, or a full reloading kit, save big with this promotion. It is good for purchases made through the end of the year, December 31, 2017. Download REBATE Form HERE.
4. PMA Tool — 10% Off Orders Plus Free Shipping
PMA Tool carries some of the very best products for precision reloaders. PMA offers Micro-Die Adjusters, superb case trimming tools, cleaning gear, as well as great products from Kelbly’s, Harrell’s Precision, and Lenzi. Right now you can save on a vast array of products PMA sells. The folks at PMA report: “The Christmas and New Year Holidays are here. Every once in a while it’s nice to give yourself a little something special. As a special thank you to you, our favorite customers, we are offering 10% off your entire order during the Holiday Season. Simply use the code YFVVB46UEWU upon checkout at pmatool.com to receive your 10% discount. We at PMA Tool are also offering FREE SHIPPING within the USA through the end of 2017.”
5. Brownells — Buy Revolver Get $100 Gift Card + $50 S&W Rebate
This is the best promo we’ve ever seen for premium S&W revolvers. First you get a $100 Brownells Gift Card. In addition, Smith & Wesson provides a $50 Rebate in the form of a prepaid Visa Card. That’s $150.00 in value. Wait — it gets even better! On Christmas Day (’til 11:59 pm CST), use Brownells checkout code “NBE” to get another $50 off orders over $500. That’s $200.00 in total savings! (Or use code NBD to get $30 off orders over $300 — details HERE). This promo applies to over 50 different S&W revolvers, not just the ones in the graphic. SEE ALL Revolvers HERE.
6. Amazon — Sig Kilo 1250 Laser Rangefinder, $222.21
Every outdoorsman can use a good laser rangefinder. If you don’t have a quality, compact Laser Rangefinder, here’s a great deal. The 6x20mm SIG Kilo 1250 Camo Rangefinder is now on sale for $222.21 with free shipping. This is a very accurate LRF, that ranges deer-sized targets at long distances quickly. The scan mode is very fast (4X per second) and this offers both line of sight (LOS) or angle modified range (AMR). The unit is compact and light — a bonus for hunters. There are more expensive Laser Rangefinder that can range farther, but this $222 Kilo 1250 will definitely do the job on a hunting trip for one-third the price.
7. Midsouth — 10% Off All Sierra Bullets
We’ve been impressed with recent offerings from Sierra Bullets. Many popular Sierra MatchKing bullet types now come “Pointed” from the factory. That pointing process uniforms the bullet tips, maintaining a more consistent Ballistic Coefficient (BC) among all the MatchKings in a box. That, in turn, can produce less vertical dispersion, because the bullet-to-bullet aerodynamic drag variance is signficantly reduced. We also like Sierra’s Varmint and Hunting bullets. Choose traditional bullets or tipped bullets — Sierra offers both types. Right now Midsouth is offering 10% off all Sierra rifle and pistol bullets in stock. Considering that Midsouth’s bullet prices were very competitive to begin with, this is a good deal.
8. CDNN Sports — HK 416 .22LR Rimfire Rifle, $389.88
If you are looking for an AR-type .22 LR rifle for cross-training and rimfire tactical matches, the HK 416 is a fine choice. Made by Walther under license, these HK 416 D145RS rimfire rifles are accurate and reliable. This is a good deal at $389.88. The HK 416 normally sells for $550.00 to $600.00. One purchaser writes: “Great .22. I have had this gun a couple of months and have put about 500 rounds of 5 different brands of ammo through it. Not one FTE. I have shot other brands that can’t get through one 30-round mag without a failure.” CLICK HERE for Product Details.
9. Grafs.com — Magnetospeed Sporter $178.99
If you have been waiting to get a Magnetospeed… wait no longer. Priced at just $178.99 at Grafs.com, the Magnetospeed Sporter model costs less than half as much as Magnetospeed’s V3 models. This chronograph attaches directly to your barrel so you don’t have to go downrange to position tripods and set up skyscreens. For most people the Sporter Model contains all the features they need. Using Magnetospeed’s XFR adapter (sold separately), data can be transferred easily from the display module to your mobile device. This is also available from Amazon for $179.00 with free shipping. READ Magnetospeed Sporter Review.
We like reactive targets. It’s fun to “ring steel” and see a target move instantly when hit. For just twenty bucks (including shipping), it’s hard to go wrong with this 8″ AR500 Steel Gong. The 8″-diameter size is big enough for zeroing at 200 yards, yet offers a nice challenge at 500 yards and beyond. There is also a 6″-diameter model for just $14.00.
Here’a useful article by Sierra Bullets Media Relations Manager Carroll Pilant. This story, which originally appeared in the Sierra Blog, covers some of the more common ammo problems that afflict hand-loaders. Some of those issues are: excessive OAL, high primers, and improperly sized cases. Here Mr. Pilant explains how to avoid these common problems that lead to “headaches at the range.
I had some gentlemen at my house last fall getting rifle zeros for an upcoming elk hunt. One was using one of the .300 short mags and every 3rd or 4th round would not chamber. Examination of the case showed a bulge right at the body/shoulder junction. These were new cases he had loaded for this trip. The seating die had been screwed down until it just touched the shoulder and then backed up just slightly. Some of the cases were apparently slightly longer from the base to the datum line and the shoulder was hitting inside the seating die and putting the bulge on the shoulder. I got to thinking about all the gun malfunctions that I see each week at matches and the biggest percentage stem from improper handloading techniques.
One: Utilize a Chamber Gage
Since I shoot a lot of 3-gun matches, I see a lot of AR problems which result in the shooter banging the butt stock on the ground or nearest solid object while pulling on the charging handle at the same time. I like my rifles too well to treat them that way (I cringe every time I see someone doing that). When I ask them if they ran the ammo through a chamber gage, I usually get the answer, “No, but I need to get one” or “I didn’t have time to do it” or other excuses. The few minutes it takes to check your ammo can mean the difference between a nightmare and a smooth running firearm.
A Chamber Gauge Quickly Reveals Long or Short Cases
Size Your Cases Properly
Another problem is caused sizing the case itself. If you will lube the inside of the neck, the expander ball will come out a lot easier. If you hear a squeak as the expander ball comes out of a case neck, that expander ball is trying to pull the case neck/shoulder up (sometimes several thousandths). That is enough that if you don’t put a bulge on the shoulder when seating the bullet, like we talked about above, it can still jam into the chamber like a big cork. If the rifle is set up correctly, the gun will not go into battery and won’t fire but the round is jammed into the chamber where it won’t extract and they are back to banging it on the ground again (with a loaded round stuck in the chamber). A chamber gage would have caught this also.
Oversizing cases also causes problems because the firing pin doesn’t have the length to reach the primer solid enough to ignite it 100% of the time. When you have one that is oversized, you usually have a bunch, since you usually do several cases at a time on that die setting. If the die isn’t readjusted, the problem will continue on the next batch of cases also. They will either not fire at all or you will have a lot of misfires. In a bolt action, a lot of time the extractor will hold the case against the face of the breech enough that it will fire. The case gets driven forward and the thinner part of the brass expands, holding to the chamber wall and the thicker part of the case doesn’t expand as much and stretches back to the bolt face. If it doesn’t separate that time, it will the next time. When it does separate, it leaves the front portion of the case in the chamber and pulls the case head off. Then when it tries to chamber the next round, you have a nasty jam. Quite often range brass is the culprit of this because you never know how many times it has been fired/sized and in what firearm.’Back to beating it on the ground again till you figure out that you have to get the forward part of the case out.
Just a quick tip — To extract the partial case, an oversized brush on a cleaning rod [inserted] and then pulled backward will often remove the case. The bristles when pushed forward and then pulled back act like barbs inside the case. If you have a bunch of oversized case that have been fired, I would dispose of them to keep from having future problems. There are a few tricks you can use to salvage them if they haven’t been fired though. Once again, a case gage would have helped.
Two: Double Check Your Primers
Another thing I see fairly often is a high primer, backwards primer, or no primer at all. The high primers are bad because you can have either a slam fire or a misfire from the firing pin seating the primer but using up its energy doing so. So, as a precaution to make sure my rifle ammo will work 100% of the time, I check it in a case gage, then put it in an ammo box with the primer up and when the box is full, I run my finger across all the primers to make sure they are all seated to the correct depth and you can visually check to make sure none are in backwards or missing.
Three: Check Your Overall Cartridge Length
Trying to load the ammo as long as possible can cause problems also. Be sure to leave yourself enough clearance between the tip of the bullet and the front of the magazine where the rounds will feed up 100%. Several times over the years, I have heard of hunters getting their rifle ready for a hunt. When they would go to the range to sight in, they loaded each round single shot without putting any ammo in the magazine. On getting to elk or deer camp, they find out the ammo is to long to fit in the magazine. At least they have a single shot, it could be worse. I have had hunters that their buddies loaded the ammo for them and then met them in hunting camp only to find out the ammo wouldn’t chamber from either the bullet seated to long or the case sized improperly, then they just have a club.
Four: Confirm All Cases Contain Powder
No powder in the case doesn’t seem to happen as much in rifle cartridges as in handgun cartridges. This is probably due to more handgun ammo being loaded on progressive presses and usually in larger quantities. There are probably more rifle cartridges that don’t have powder in them than you realize though. Since the pistol case is so much smaller internal capacity, when you try to fire it without powder, it usually dislodges the bullet just enough to stick in the barrel. On a rifle, you have more internal capacity and usually a better grip on the bullet, since it is smaller diameter and longer bearing surface. Like on a .223, often a case without powder won’t dislodge the bullet out of the case and just gets ejected from the rifle, thinking it was a bad primer or some little quirk. For rifle cases loaded on a single stage press, I put them in a reloading block and always dump my powder in a certain order. Then I do a visual inspection and any case that the powder doesn’t look the same level as the rest, I pull it and the one I charged before and the one I charged after it. I inspect the one case to see if there is anything visual inside. Then I recharge all 3 cases. That way if a case had powder hang up and dump in the next case, you have corrected the problem.
On progressive presses, I try to use a powder that fills the case up to about the base of the bullet. That way you can usually see the powder as the shell rotates and if you might have dumped a partial or double charge, you will notice as you start to seat the bullet if not before. On a progressive, if I don’t load a cartridge in one smooth stroke (say a bullet tipped over sideways and I raised the ram slightly to reset it) Some presses actually back the charge back adding more powder if it has already dumped some so you have a full charge plus a partial charge. When I don’t complete the procedure with one stroke, I pull the case that just had powder dumped into it and check the powder charge or just dump the powder back into the measure and run the case thru later.
I could go on and on but hopefully this will help some of you that are having these problems cure them. A case gage really can do wonders. Stay tuned for Easy Easy Ways to Save Yourself Headaches at the Range Part 2!
NOTE: There are ten (10) shots in the group, but for simplicity we are only displaying five (5) shot circles. Adding more circles won’t change the measurement because the two most distant shots, which determine group size, ARE included.
What kind of 200-yard accuracy can you get in an enclosed, underground test range? Would you believe 0.162 MOA at 200 yards with a .338? Have a look at these test targets from Sierra Bullets. Like most bullet manufacturers, Sierra does live-fire bullet testing to ensure that Sierra projectiles perform as promised, with repeatable accuracy. Sierra tests bullets in its own underground test complex. Sierra’s 300-meter test range is the longest, privately-owned underground bullet test facility in the world. Sierra offers free tours of the test tunnel as part of Sierra’s Factory Tour Program.
Day in and day out, various bullet types are tested using a big collection of barreled actions. These barreled actions are clamped in stout, return-to-battery test fixtures. These big, heavy test fixtures provide near-perfect repeatability (with no human-induced holding or aiming errors).
Sierra Bullets 10-Shot Groups at 200 yards
Check out these 10-shot test groups shot at the Sierra Test Range at 200 yards. Note that the numbers listed on each sample are actual measurements in inches. To convert to MOA, cut those numbers in half (to be more precise, divide by 2.094, which is 1 MOA at 200 yards). For example, the 0.340″ middle group works out to 0.162 MOA at 200 yards.
Scan-Verified 0.162 MOA Accuracy at 200 Yards
To verify the accuracy of Sierra’s measurements, we measured the middle (.338 caliber) 10-shot group with our On-Target Group Measurement software. We registered a group size reading of 0.339″ — within one-thousandth of the Sierra measurement. The calculated group size in MOA (Minute of Angle) is 0.162.
That’s amazingly good for ten rounds of big .338 caliber bullets. A FIVE-shot 0.162 MOA group at 200 would be considered excellent at any benchrest match. But remember this target has TEN shots. The current, one-target IBS world record for ten shots at 200 yards is 0.245″, set by Ed Watson in 1999.
Bevy of Barreled Actions for Bullet Testing
Sierra Bullets uses dozens of barreled actions for testing bullets in its enclosed, 200-yard test range. Each barrel has its own logbook to track the barrel’s usage.
Hodgdon has just introduced a versatile new Winchester-brand pistol powder with a clean formulation. WinClean 244 is a modern, Winchester-branded propellant “ideally suited to .38 Special, .45 Auto, and 9mm standard loads.” That means WinClean 244 is designed for moderate pressure target loads. That’s good news for hand-loaders who enjoy target shooting with these popular cartridges.
Hodgdon, which markets Winchester powders, says that new WinClean 244 is consistent, and clean burning with a low flash: “The WinClean formulation reduces copper fouling and residue, extending accuracy for longer shooting periods.” It will be interesting to see if this is noticeably cleaner-burning than other popular powders. In pistol barrels we are actually less concerned with copper fouling than with general “sootiness” and carbon.
With its clean-burning qualities, “shooters are really going to like loading handgun cartridges with this powder” said Tim Vaitekunas, vice president of product development at Hodgdon. WinClean 244 powder, in 1-, 4- and 8-pound canisters, should be in stores in January 2018. Load Data is now available right now on the Hodgdon Reloading Data Center.
This Editor used to compete in Action Pistol matches, so I’ve loaded thousands of rounds of pistol ammunition using a wide variety of pistol propellants. I tend to favor Vihtavuori N310/N320 for .45 ACP, and Alliant powders for 9mm Luger, but it will be interesting to see how WinClean 244 works for these chamberings. Many powders work well for .38 Special loads, but new 244’s low flash could be an advantage there too.
Pistol Showcase — Candidates for WinClean 244
The Sig P210 SuperTarget is a modern 9mm Luger pistol with exceptional accuracy and one of the best out-of-the-box triggers you’ll ever try. Winchester WinClean 244 is suitable for a variety of bullet weights in the 9x19mm (9mm Luger) cartridge.
The 8-shot Smith & Wesson Model 627 Pro is an exceptional revolver that balances well and can shoot 1″ groups at 25 yards with tuned handloads. On this particular Model 627, featured on YouTube, the owner added a Hogue Pau Ferro wood grip, Hogue Extended Cylinder Release, and Wilson Combat trigger spring kit. In this kind of wheelgun, you can shoot moderate .38 Special target rounds loaded with new WinClean 244 powder.
Developed in 2007 by Dennis DeMille and Dave Emary, the 6.5 Creedmoor is a shortened and improved 30 TC cartridge case that was inspired by the .308 Winchester design. This short action design was created to maximize case capacity and a wide range of loading lengths, while still fitting in standard short action magazines. With the correct twist barrel, the versatile 6.5 Creedmoor can take advantage of the wide range of bullet weights available in 6.5 mm (i.e. .264 caliber). Reloaders should keep in mind that the 6.5 Creedmoor works best with medium to medium-slow powders such as H4350, Varget, Win 760, and RE-17. The light recoil and adaptability of the efficient 6.5 Creedmoor cartridge has already proven itself in high power, precision rifle series and benchrest competitions. Couple that with respectable barrel life and its intrinsic accuracy potential and you have a recipe for success which should insure its legacy for decades to come.
Oversizing cases also causes problems because the firing pin doesn’t have the length to reach the primer solid enough to ignite it 100% of the time. When you have one that is oversized, you usually have a bunch, since you usually do several cases at a time on that die setting. If the die isn’t readjusted, the problem will continue on the next batch of cases also. They will either not fire at all or you will have a lot of misfires. In a bolt action, a lot of time the extractor will hold the case against the face of the breech enough that it will fire. The case gets driven forward and the thinner part of the brass expands, holding to the chamber wall and the thicker part of the case doesn’t expand as much and stretches back to the bolt face. If it doesn’t separate that time, it will the next time. When it does separate, it leaves the front portion of the case in the chamber and pulls the case head off. Then when it tries to chamber the next round, you have a nasty jam. Quite often range brass is the culprit of this because you never know how many times it has been fired/sized and in what firearm.’Back to beating it on the ground again till you figure out that you have to get the forward part of the case out.
Scan-Verified 0.162 MOA Accuracy at 200 Yards
