Erik Cortina is one of America’s top F-Class competitors. He has won major matches and is a member of Team Lapua-Brux-Borden. Erik, who produces his own line of EC Barrel Tuners and Tuner Brakes, also has a popular Believe the Target YouTube Channel which features interviews with top shooters, parts makers, and gunsmiths. For this Saturday Movie showcase, we feature videos created by Erik for his channel.
Interview with Bryan Litz of Applied Ballistics
Bryan Litz, head honcho of Applied Ballistics LLC, is arguably the leading ballistics expert on planet earth. A talented shooter who has won major F-Class, ELR, and Palma matches, Bryan is a high-IQ scientist who has developed the ballistics software many of us now use in Kestrels and other devices to calculate scope clicks with extreme precision. In this interview, Bryan explains basic ballistics principles and also corrects some popular misconceptions. This is a great interview that has received much praise from viewers, one of whom has noted: “Bryan is a walking science lab. He puts out amazing data-based info[.]” With 87,000 views, this is Erik’s second-most popular video ever.
Interview with 6-Time Nat’l Long Range Champion John Whidden
CLICK HERE for full 81-minute interview with John Whidden.
John Whidden of Whidden Gunworks is one of the greatest American marksman in history. Shooting sling rifles, John has won the U.S. Long Range National Championship a remarkable six times. He has also won a Palma World Championship, and this summer John won the 2022 Smallbore Prone U.S. National Championship. While a humble individual, John has superb shooting skills and unrivaled mental toughness. In this interview, John talks about the challenges of competition and what motivates him to excel. John also talks about the products he has developed for Whidden Gunworks.
Interview with NBRSA 3-Gun and Tackdriver Champ Bart Sauter
Bullet-maker Bart Sauter is one of the world’s best benchrest shooters. He won the 2022 NBRSA 3-Gun National Championship this year, and he also has won the multi-class Tack Driver event two years in a row. Plus he has set small-group world record at 600 yards. In this very informative interview, Bart talks about bullets, equipment selection, match preparation, and shooting techniques. We think every benchrest shooter should watch this video.
Master at Work — Sauter in Action
If you want to see how a world-class bench shooter runs his rifle, check out this short video showing Bart Sauter in action. He runs five shots in about 9 seconds.
Interview with Tod Hendricks, 2021 F-Open National Champion
A member of Team Lapua/Brux/Borden, Tod Hendricks has been one of the most talented and consistent F-Open competitors for many years. He used his mental toughness and wind-reading skills to capture a National Championship in 2021. In this wide-ranging interview with his team-mate Erik Cortina, Tod reveals what it takes to win in F-Open these days, covering equipment, ammo quality, and match preparation.
Brux Barrels is a machine tool company located in Lodi, Wisconsin, specializing in premium, custom, cut-rifled barrels. Brux barrels have set some impressive benchrest records, and have won championships in multiple disciplines. In this video Erik Cortina interviews Ken Clemens of Brux. They discuss the production process at Brux, from the selection of top-quality steel blanks to the final hand-lapping procedures.
Interview with Lanny Bassham, Olympic Gold Medalist and Author
Erik Cortina recently interviewed noted author and Olympic Gold Medal-winning shooter Lanny Bassham. Erik asked Lanny about his book With Winning in Mind. Lanny discussed the “mental game” in the shooting sports and Lanny’s program for visualization of a winning performance. Lanny explains that after you have mastered your rifle skills, and learned to read the wind, it is important to adopt a winning mentality and to visualize success. Lanny should know. He won a shooting Gold Medal in the Olympics along with 22 world individual and team titles.
Interview with Lindsey Paul, Queen of 2 Miles
Lindsey Paul is the only women to win the King of Two Miles ELR competition, becoming the first-ever QUEEN of Two Miles, shooting a .375 CheyTac. In 2021, the talented lady Texan beat a field of top competitors, including past KO2M Champions, all guys. Lindsey had a truly outstanding performance, including 3 hits in 5 shots at the max distance, 2.0 miles (3520 yards). In this interview, Lindsey, who works in the law enforcement field, talks about the Extreme Long Range (ELR) game, and she also explains what it’s like to shoot the heavy-recoiling .375 CheyTac.
Interview with Frank Galli — Founder of Sniper’s Hide
The founder of the popular Sniper’s Hide Forum, Frank Galli is an online pioneer and living legend in the tactical shooting sports world. A former U.S. Marine Scout-Sniper, Frank (aka “Lowlight”) runs a very active Forum with over 180,000 members. Along with moderating his Forum, Frank runs training clinics and hosts regular podcasts. Frank is also the author of the book Precision Rifle Marksmanship: The Fundamentals, an excellent resource for PRS/NRL competitors as well as tactical marksmen.
BONUS Videos — Two Great Tech and Reloading Videos
How to Find Jam Point on your Barrel
Loading for F-Class
Erik Cortina produces his own line of EC Barrel Tuners and Tuner Brakes. These have been used successfully by many top shooters. View the full line of Cortina Precision products at: ShootSmallGroups.com.
Hunting season is underway in many parts of the country. Before you head out to the hunting fields, you may want to practice your shooting on specialty paper targets designed expressly for hunters. Here is a selection of game targets which can help you achieve success this hunting season.
Realistic Game Targets with Marked Vital Zones
Serious hunters may prefer to practice with photo-realistic game targets with animal profiles that look like the real thing. Champion offers realistic “X-Ray” game animal targets. These X-Ray targets display the bone structure and heart/lung position of game animals. These are popular with hunters, as are Champion’s Critter Targets Set with 5 different realistic animals in a 10-pack. CLICK HERE to view X-Ray Animal Targets and Critter Targets.
Unfortunately this large ELK X-Ray target has been discontinued, but you may still find it in some stores. CLICK HERE to view large version.
Allen Company offers a 23″ x 35″ Realistic Whitetail Deer Target that shows the vital Hit Zone. The EZ Aim® Paper Shooting Target has two Hit Zone points, plus ten other larger diameter white circle aiming points that can be used for zeroing your rifle or practicing your accuracy. A target twin-pack is $7.99 at Amazon.com.
FREE Printable Game Targets from the NRA
To help you prepare for your fall hunts, NRABlog.com has created a set of color practice hunting targets. Each target features three red bullseyes, centered on the animals. You can print the targets in black and white, but they look best in color. Click on each image below to download a FREE printable PDF file.
Right-Click Each Image to Download Printable PDF File:
Sometimes you’ll get a barrel that doesn’t stabilize bullets the way you’d anticipate, based on the stated (or presumed) twist rate. A barrel might have 1:10″ stamped on the side but it is, in truth, a 1:10.5″ twist or even a 1:9.5″. Cut-rifled barrels, such as Kriegers and Bartleins, normally hold very true to the specified twist rate. With buttoned barrels, due to the nature of the rifling process, there’s a greater chance of a small variation in twist rate. And yes, factory barrels can be slightly out of spec as well.
After buying a new barrel, you should determine the true twist rate BEFORE you start load development. You don’t want to invest in a large supply of expensive bullets only to find that that won’t stabilize because your “8 twist” barrel is really a 1:8.5″. Sinclair International provides a simple procedure for determining the actual twist rate of your barrel.
Sinclair’s Simple Twist Rate Measurement Method
If are unsure of the twist rate of the barrel, you can measure it yourself in a couple of minutes. You need a good cleaning rod with a rotating handle and a jag with a fairly tight fitting patch. Utilize a rod guide if you are accessing the barrel through the breech or a muzzle guide if you are going to come in from the muzzle end. Make sure the rod rotates freely in the handle under load. Start the patch into the barrel for a few inches and then stop. Put a piece of tape at the back of the rod by the handle (like a flag) or mark the rod in some way. Measure how much of the rod is still protruding from the rod guide. You can either measure from the rod guide or muzzle guide back to the flag or to a spot on the handle.
Next, continue to push the rod in until the mark or tape flag has made one complete revolution. Then re-measure the amount of rod that is left sticking out of the barrel. Use the same reference marks as you did on the first measurement. Next, subtract this measurement from the first measurement. This number is the twist rate. For example, if the rod has 24 inches remaining at the start and 16 inches remain after making one revolution, you have 8 inches of travel, thus a 1:8″-twist barrel.
Determining Barrel Twist Rate Empirically
Twist rate is defined as the distance in inches of barrel that the rifling takes to make one complete revolution. An example would be a 1:10″ twist rate. A 1:10″ barrel has rifling that makes one complete revolution in 10 inches of barrel length. Rifle manufacturers usually publish twist rates for their standard rifle offerings and custom barrels are always ordered by caliber, contour, and twist rate. If you are having a custom barrel chambered you can ask the gunsmith to mark the barrel with the twist rate.
The NRA has released a special-edition digital publication, What NRA Does for Women, celebrating NRA women members and spotlighting NRA programs for women. What NRA Does for Women highlights NRA programs and activities geared toward women: recreational and competitive shooting; hunting; Second Amendment advocacy; and today’s primary reason for firearm ownership by women—self-defense.
This eZine spotlights the roles played by women in the NRA’s 153-year history, featuring ladies who helped shape the NRA into the most influential gun rights organization in the world. The eZine highlights champion women shooters and prominent lady gun journalists and commentators.
Women are now the fastest-growing demographic of gun owners. And women were well-represented within the NRA even in its earliest days. While it would still be nearly 50 years after the NRA came into existence before full women’s suffrage in the U.S. was realized, women have always been essential in transforming the nation’s oldest civil rights organization into the world’s most influential gun-rights group.
Created by the women editors of NRA Media, What NRA Does for Women spotlights some of the major milestones and accomplishments of the pioneering women who forged the path for today’s lady gun owners. This special edition eZine also includes reviews of recommended firearms for ladies.
While the NRAWomen.com website regularly features news and information for women gun owners, this new digital eZine highlights the NRA’s many programs and activities geared toward women. There are stories on hunting, competition shooting, and training for self-defense.
Last Saturday, 9/28/24, was National Hunting and Fishing Day. Working on your wind reading skills can improve your odds of a successful hunt. Image from NHFDay.org.
Thomas Haugland, a Shooters’ Forum member from Norway, is a long-range target shooter and hunter. He has created an interesting video showing how to gauge wind velocities by watching trees, grass, and other natural vegetation. The video commentary is in English, but the units of wind speed (and distance) are metric. Haugland explains: “This is not a full tutorial, but rather a short heads-up to make you draw the lines between the dots yourself”. Here are some conversions that will help when watching the video:
.5 m/s = 1.1 mph | 1 m/s = 2.2 mph | 2 m/s = 4.5 mph
3 m/s = 6.7 mph | 4 m/s = 8.9 mph | 5 m/s =11.2 mph
How to Gauge Wind Speed and Hold Off Using Reticles
This field video shows how to observe natural indicators — trees and vegetation — to estimate wind velocity. Then it shows how to calculate hold-offs using the reticle hash-marks. Thomas shoots a fast-cycling Blaser R93 rifle with Norma 6XC ammunition.
At AccurateShooter.com, our primary focus is precision target shooting with rifles. But it’s definitely fun to shoot pistols too, and we bet most of our regular readers own handguns. Here are six tips for shooting safely and accurately with handguns. These pointers will help you advance your skills and have more fun with your pistols and revolvers. Top image courtesy Sanctuary Gun Club.
1. Make Sure Safety Is Number One
Whether you own one gun or one hundred, gun safety must always be your main priority. In this video, Smith & Wesson Team Captain Julie Golob covers the basics of gun safety.
2. Start with a .22 LR Handgun
We strongly recommend that new pistol shooters start off with a .22 LR rimfire handgun. The .22 LR cartridge is accurate but has very low recoil, less “bark” than a centerfire, and very little smoke and muzzle flash. New shooters won’t have to fight muzzle flip, and won’t develop a flinch from the sharp recoil and muzzle blast common to larger calibers. With the .22 LR, the trainee can focus on sight alignment, breathing, and trigger pull. When he or she has mastered those skills, move on to a .38 Special or 9mm Luger (9x19mm).
What gun to use? We recommend the 10-shot Smith & Wesson Model 617. This is ideal for initial training, shooting single action, slow-fire. You want to focus on sight picture and holding steady. Shown above is the 4″-barrel Model 617 which balances well. There is also a 6″-barrel version. It has a longer sight radius, but is a little nose-heavy. Both are great choices. They are extremely accurate and they boast a very clean, precise trigger.
If you prefer a semi-auto .22 LR pistol, we recommend the Browning Buck Mark series. Buck Marks are very accurate and very reliable. This rimfire pistol is available in a variety of models starting at under $350.00. Like the S&W Model 617, a good Buck Mark will serve you for a lifetime.
3. Use Quality Targets with Multiple Aim Points
It’s common for new pistoleros to start shooting at cans or clay birds at a public range. That can be fun, but it’s better to start with proper targets, placed at eye level, at 7-10 yards. We like to use targets with large, brightly colored circles. Focus on putting 5 shots in a circle. We recommend targets that have multiple bullseyes or aiming points — that way you don’t have to constantly change your target. There are also special paper targets that can help you diagnose common shooting problems, such as anticipating recoil. EZ2C Targets offers many great target designs with bright, red-orange aim points. You can also use the bright orange Birchwood Casey stick-on Target Dots (right). These come in a variety of diameters. We like the 2″ dot at 10 yards.
4. Shoot Outdoors If You Can
We recommend that new pistol shooters begin their training at an outdoor range. There are many reasons. First, the light is better outdoors. Indoor ranges can be dark with lots of shadows, making it harder to see your target. Second, sound dissipates better outdoors. The sound of gunfire echoes and bounces off walls indoors. Third, an outdoor range is a more comfortable environment, particularly if you can get out on a weekday morning. Indoor ranges, at least in urban areas, tend to be crowded. Many also have poor ventilation. If you can make it to an outdoor range, you’ll be happy. Many outdoor ranges also have some steel pistol targets, which offer a fun alternative to paper. When shooting steel however, we recommend polymer encased or lead bullets to avoid ricochets.
Too many new pistol shooters try to move right to rapid fire drills. It’s better to start slow, practicing the basics, under the guidance of a good mentor. If you belong to a club, ask if there are certified instructors who will help out. This Editor learned pistol shooting from a seasoned bullseye shooter, who got me started with a .22 LR revolver and very close targets. Over the course of a few range sessions we progressed to farther targets and faster pace. But the fundamentals were never forgotten. When starting your pistol training, it’s wise to view some instructional videos. Top Shot Champion Chris Cheng hosts an excellent Handgun 101 Series produced by the NSSF. We’ve linked one of these Handgun 101 videos for Tip #6.
6. SLOW DOWN — This Is Not a Race
When you learned to ride a bicycle, you started slow — maybe even with training wheels. The same principle applies to pistol shooting. When you get started with handguns, we recommend you shoot slowly and deliberately. Start with the handgun unloaded — just work on your sight alignment and breathing. With snap caps in place, try some dry-firing drills. Then progress to live fire. But be deliberate and slow. With the target at 20 feet, see if you can get three successive shot-holes to touch. Believe it or not, many common pistols are capable of this kind of accuracy (but you won’t see many shooters at indoor ranges who pursue that kind of precision). Once you master your form and accuracy, then you can work on your speed.
For years the 6mm PPC (aka 6PPC) cartridge has dominated short-range group benchrest shooting, winning championships and setting records. Traditionally 6PPC cases were formed from Lapua 220 Russian brass. Now there is an exciting alternative — Alpha Munitions 6mm PPC cartridge brass. With a suitable chamber this is ready to load and shoot with no special fire-forming required. (If you have a tight-necked chamber, neck-turning would be needed first.)
If you want to try the Alpha 6mm PPC brass, head over to Bruno Shooters Supply. Right now Bruno’s has a large quantity of Alpha 6mm PPC brass in stock and ready to ship. This brass comes in nice, protective plastic boxes with secure slots for each brass case. Order now at $159.95 for a 100ct box. NOTE: Discounts are offered for quantities of 500+.
On the Alpha Munitions website, you’ll find this information for Alpha 6mm PPC brass with Optimized Case Design OCD technology:
– 100 count boxes ship in custom Alpha Munitions plastic cases with perforated bi-layer foam for protection of cases and loaded ammunition
– Brass has a .060″ flash hole
– Do NOT small base size OCD brass
NOTE: If you shoot mid-range (600-yard) benchrest or F-Open matches, Alpha Munitions also produces 6mm BRA, 6mm Dasher, and 6mm GT brass. Unfortunately all three types are listed as currently out of stock on the Alpha Munitions website.
Photo by Forum member GAT. Chambered in 6-6.5×47 Lapua, this rifle features a Stiller TAC30 action, Krieger barrel, Harrells brake, Konohawk Stock, and Sightron SIII 6-24x50mm scope.
Ryan Cleckner has created many good shooting videos for the NSSF, such as his excellent Understanding MOA Video. Ryan is noted for his ability to explain complex topics in an easy-to-comprehend manner. This video, covering the fundamentals of shooting, has been viewed over 3.7 million times! It’s worth watching, particularly for guys getting started in PRS/practical competitions.
In this video, Ryan Cleckner reviews proper technique for rifle shooters. A stable platform, sight alignment, sight picture, and trigger control are key fundamentals to shooting properly. This is basic stuff, but Cleckner presents it in a clear, logical fashion. This is a good video for novice shooters.
Tip on Viewing Your Reticle:
Cleckner: “Sometimes it can be difficult to focus between the target and the reticle, even with the parallax adjusted properly. I recommend you focus only on the reticle. Just like the front sight on a rifle or a handgun, that reticle is what you can control, and it’s what matters. Focus on a crisp, clear reticle, in a stable platform, and all that’s left is trigger control.”
Tip on Trigger Control:
Cleckner: “Trigger control is pretty straightforward, as long as you think about it as a continuous process, and not just one thing that happens. I like to think about it as drawing a line in the dirt. I like to think about this constant pressure that I’m adding as I draw this line straight back, and then… continuing to draw that line even as the rifle goes off. That’s the good follow-through you’ll need.”
Long Range Shooting Handbook — A Good Resource
Cleckner has authored a book, the Long Range Shooting Handbook, which expands on the topics covered in the above video. You can view Sample Chapters from Ryan’s Book on Amazon.com.
Ryan Cleckner’s LR Shooting Handbook is designed as an intro to important fundamental concepts such as MOA vs. Mils, External Ballistics, and Environmental Effects. Included are personal tips and advice based on Cleckner’s years of experience as a sniper instructor and special operations sniper.
The Long Range Shooting Handbook is divided into three main categories: What It Is/How It Works, Fundamentals, and How to Use It. “What It Is/How It Works” covers equipment, terminology, and basic principles. “Fundamentals” covers the theory of long range shooting. “How to Use It” gives practical advice on implementing what you’ve learned, so you can progress as a skilled, long range shooter.
As a long-range shooting expert, Ryan Cleckner has impressive credentials. Cleckner was a special operations sniper (1/75 RGR) with multiple combat deployments, and he has served a U.S. Army sniper instructor. Currently he works as a firearms industry executive and attorney.
3PAR’s most popular category is the Sporter Class where air rifles may not cost more than $700 now and where the use of special clothing/accessories is generally prohibited. The rifle is a Crosman CH2021.
Based on article By Gary Anderson, DCM Emeritus
Three-Position Air Rifle (3PAR) is the most popular junior rifle program in the USA with more than 2,000 high school JROTC programs, hundreds of 4-H Shooting Sports clubs, and several hundred junior rifle clubs. An estimated 250,000 to 300,000 American youths participate annually in 3PAR programs. The primary national governing body for this youth sports program is the National Three-Position Air Rifle Council [which] governs this discipline through its rulebook, the National Standard Three-Position Air Rifle Rules.
The newest version of official 3PAR rules, the 15th 2024-2026 Edition, has just been released. An electronic PDF version of the new rulebook is posted on the CMP website. And you can CLICK HERE for a “Summary of Changes in the 15th Edition 2024-2026 National Standard Three-Position Air Rifle Rules”. Printed copies of the new rulebook will be available in a few weeks.
Notable 3PAR Rule Changes
ISSF RULE COORDINATION
With many 3PAR precision class athletes also competing in USA Shooting competitions, which follow ISSF rules … the National Council has concluded that it must keep 3PAR Rules closely aligned with ISSF Rules. The new 3PAR Rules include several paragraphs that are adapted from recently revised ISSF rules. Recent ISSF rule changes regarding sight height, fore-end depth, and butt-plate measurements are included. An athlete’s visor can now touch the rear sight if it is made of “flexible material.” An ISSF change to the standing position rule is added.
POSITION FIRING ORDER
Recent 3PAR Rules offered the option of firing the positions in the original prone-standing-kneeling order or in the newer international standard kneeling-prone-standing order. The overwhelming share of 3PAR match sponsors are already using the kneeling-prone-standing order, so it made sense to bring 3PAR Rules in line with how the rest of the world is shooting three-position rifle competitions. The prone-standing-kneeling firing order has been deleted from the new rules.
JUNIOR EIC AWARD PROGRAM
This program is one of the most popular features of the entire 3PAR Program. It awards Junior Distinguished Badges and other distinctions to athletes who earn “EIC credit points” in EIC Cup Matches and National Championships. The provision allowing Virtual Cup Matches that could be conducted at multiple sites with electronic connections has been deleted. Virtual EIC Cup Matches were authorized during the COVID era when team travel was severely restricted.
PRINTED RULES AND DOWNLOADABLE SUPPORT DOCUMENTS
Previous editions of the 3PAR Rules included support documents that were not part of the rules. The following documents are no longer in the rulebook, but they are available on the CMP website: Summary of Rule Changes in the 2024-2026 Rulebook; Team Entry and Eligibility Declaration Form; Sanctioning Matches (Instructions and Forms); Range Officer Scripts.
Sporter Air Rifles and Implementation of Electronic Targets
Sporter Class Competition. The 3PAR Council seeks to make competition practical for as many schools, junior clubs, and individuals as possible by limiting rifle costs and not allowing expensive equipment such as pricey shooting jackets. The new rules raise the maximum air rifle cost from $650 to $700. A major 3PAR program advance has been the replacement of pneumatic, pump air rifles with compressed air sporter class air rifles. The new Crosman CH2021 (CA) now dominates Sporter Class competition.
Electronic Target Scoring. Visual Image (VIS, Orion) scoring has almost completely replaced manual scoring. The Council/CMP has sanctioned over 200 Cup/EIC matches so far in 2024; all those matches were either scored with Orion or were conducted on electronic targets. Scoring targets manually has become almost completely obsolete. Electronic targets are being installed in more and more 3PAR ranges. All 3PAR National Championships are now conducted on electronic targets on ranges at Camp Perry, Anniston, the CMP Mobile Range, or the Olympic Training Center. Scopos Athena targets have now been installed in 350 10-meter ranges in all parts of the USA.
Before you load that nice new cartridge brass for the first time, run an expander mandrel down the case necks. This will iron out dents and provide more uniform neck tension. Chose a mandrel diameter that provides appropriate neck tension.
Lapua brass is so good that you’ll be tempted to just load and shoot, if you have a “no-turn” chamber. However, some minimal case prep will ensure more uniform neck tension. Keeping your neck tension very uniform allows more consistent bullet seating. That, in turn, usually yields better accuracy, and lower Extreme Spread and Standard Deviation (ES/SD). Lapua brass, particularly 6mmBR, 6.5×47, 6.5 Creedmoor, and .308 Win comes from the factory with tighter-than-optimal necks. Before you seat bullets, at a minimum, you should inside chamfer the case mouths, after running an expander mandrel down the necks. The expander mandrels from both Sinclair Int’l and K&M will both leave the necks with enough neck tension (more than .001″) so you can then seat bullets without another operation. We suggest putting a bit of lube on the mandrel before running it down the necks — but remove any lube that gets inside the necks before seating bullets.
Both Sinclair and K&M Tools make a die body specifically to hold expander mandrels. The Sinclair version, is shown above. This $45.99 unit fits caliber-specific expander mandrels ($10.99) which measure approximately .001″ less than bullet diameter for each caliber. This is an updated “Gen II” design that completely captures the mandrel within the die so the mandrel cannot pull out. It also has an O-ring in the die cap that allows the mandrel to self-center within the case neck. Brownells offers two sizes of Sinclair die bodies for expander mandrels: .17 -.338 Caliber (#749011715 $45.99); and .357 – .50 caliber (#749008843, $45.99). All Generation II dies are machined from stainless steel and the standard diameter 7/8-14 dies include the Sinclair Stainless Steel Split Lock Ring.
Once you run the Sinclair expander mandrel down the necks of Lapua brass, after you account for brass spring-back, you’ll have about .002″ neck tension*. This will make the process of seating bullets go much more smoothly, and you will also iron out any dents in the case mouths. Once the case mouths are all expanded, and uniformly round, then do your inside neck chamfering/deburring. The same expander mandrels can be used to “neck-up” smaller diameter brass, or prepare brass for neck-turning.
Forum member Mike Crawford adds: “These expanders can also reduce runout from offset seating. Prior to bullet seating, expand the sized necks to force thickness variance outward. With the Sinclair system, the necks will springback fine, and will not be pulled out of center. This leaves plenty of tension, and bullets seated more centered. I do this, even with turned necks, to get improved seating.”
Mandrels vs. Expander Balls on Decapping Rods
If you haven’t acquired an appropriate expander mandrel for your brass, but you DO have a full-length sizing die with an expander ball, this will also function to “iron out” the necks and reduce tension. However, using a die with an expander ball will work the necks more — since you first size them down, then the ball expands them up again. Typically (but not always), run-out is worse when using an expander ball vs. an expander mandrel.
* This .002″ tension is what we have observed with Lapua 6mmBR, 6.5×47, 6.5 Creedmoor, and .308 Win brass. This might vary with much smaller or larger cases, and of course a different brand of brass might yield different results. If you get too little tension with your current mandrel, you can get a smaller-diameter mandrel from 21st Century Shooting. 21st Century even offers low-friction Titanium Nitride-coated mandrels.
Sometimes you’ll get a barrel that doesn’t stabilize bullets the way you’d anticipate, based on the stated (or presumed) twist rate. A barrel might have 1:10″ stamped on the side but it is, in truth, a 1:10.5″ twist or even a 1:9.5″. Cut-rifled barrels, such as Kriegers and Bartleins, normally hold very true to the specified twist rate. With buttoned barrels, due to the nature of the rifling process, there’s a greater chance of a small variation in twist rate. And yes, factory barrels can be slightly out of spec as well.
It’s common for new pistoleros to start shooting at cans or clay birds at a public range. That can be fun, but it’s better to start with proper targets, placed at eye level, at 7-10 yards. We like to use targets with large, brightly colored circles. Focus on putting 5 shots in a circle. We recommend targets that have multiple bullseyes or aiming points — that way you don’t have to constantly change your target. There are also special paper targets that can help you diagnose common shooting problems, such as anticipating recoil. 
