Here are two different bullet types, seated to the same CBTO length, but different COAL. Note the shiny scratches on the bullets made by the comparator tool which indicates a point on the bullet ogive near where the ogive will engage the rifling.
Effects Of Cartridge Over All Length (COAL) And Cartridge Base To Ogive (CBTO) – Part 2 by Bryan Litz forBerger Bullets. Part One of this series focused on the importance of COAL in terms of SAAMI standards, magazine lengths, seating depths, and pressure levels. Another measure of length for loaded ammunition is highly important to precision, namely Cartridge Base to Bullet Ogive Length (CBTO).
Figure 2. Chamber throat geometry showing the bullet jump to the rifling or lands.
Look at Figure 2. Suppose the bullet was seated out of the case to the point where the base of the bullet’s nose (ogive) just contacted the beginning of the riflings (the lands) when the bolt was closed. This bullet seating configuration is referred to as touching the lands, or touching the riflings and is a very important measurement to understand for precision hand-loading. Due to the complex dynamics of internal ballistics which happen in the blink of an eye, the distance a bullet moves out of the case before it engages the riflings is highly critical to precision potential. Therefore, in order to systematically optimize the precision of his handloads, it’s critically important that the precision hand-loader understands how to alter bullet seating depth in relation to the barrel rifling. Part of the required knowledge is understanding how to accurately and repeatably measure the Cartridge Base To Ogive (CBTO) dimension. This is explained in the FULL ARTICLE.
Bryan Litz offers an extended discussion on how to measure CBTO using different tools and methods, including the Hornady OAL gauge. You can read this discussion in the full article found on the Berger Bullets website. CLICK HERE to Read Full Article.
Why Not Use CBTO as a SAAMI Standard?
If CBTO is so important to rifle accuracy, you might ask, “Why is it not listed as the SAAMI spec standard in addition to COAL?” There is one primary reason why it is not listed in the standard. This is the lack of uniformity in bullet nose shapes and measuring devices used to determine CBTO.
Benefits of Having a Uniform CBTO
There is another aspect to knowing your CBTO when checking your COAL as it pertains to performance. With good bullets, tooling, and carefully-prepared cases you can easily achieve a CBTO that varies less than +/- .001″ but your COAL can vary as much as .025″ extreme spread (or more with other brands). This is not necessarily bad and it is much better than the other way around. If you have a CBTO dimension that varies but your COAL dimension is tight (within +/- .002″) then it is most likely that your bullet is bottoming out inside the seater cone on the bullet tip. This is very bad and is to be avoided. It is normal for bullets to have precisely the same nose shape and it is also normal for these same bullets to have nose lengths that can vary as much as .025″.
Summary of Cartridge Base To Ogive (CBTO) Discussion
Here are four important considerations regarding bullet seating depth as it relates to CBTO:
1. CBTO is a critical measurement to understand for handloaders because it’s directly related to precision potential, and you control it by simply setting bullet seating depth.
2. Tools and methods for measuring CBTO vary. Most of the measurement techniques have pitfalls (which may give rise to inconsistent results) that you should understand before starting out.
3. A CBTO that produces the best precision in your rifle may not produce the best precision in someone else’s rifle. Even if you have the same rifle, same bullets, same model of comparator gauges, etc. It’s possible that the gauges are not actually the same, and measurements from one don’t translate to the same dimension for another.
4. Once you find the CBTO that produces the best precision in your rifle, it’s important to allow minimal variation in that dimension when producing quality handloads. This is achieved by using quality bullets, tooling, and properly preparing case mouths and necks for consistent seating.
Applied Ballistics (AB) has published an update to its Bullet Library, which can be accessed from all AB-enabled devices, including the AB Quantum App. The library updates are based on testing with Doppler radar. The bullet updates are based on averaging of multiple Doppler Radar tests at long range (through transonic). All of the bullets that were recently updated have been tested multiple times from various different barrels and twist rates to find the average performance. These updates to the bullet library are FREE to those who have subscribed to AB Quantum.
The AB team explained that these updates will help provide the most accurate ballistic fire solutions available. Ongoing updates are planned as AB continues testing and compiling results.
“Many of our existing bullets were modeled after just one test, but after a few years of testing out of multiple guns, we have a much better assessment of the bullets’ average performance and those models replace the originals. Rest assured, when we update a bullet model, it does NOT affect an existing gun profile. It’s only new gun profiles that get built — they’ll pull the updated performance. So [there is] no need to worry about your established data changing within an existing gun profile.”
Updates to the Applied Ballistics Bullet Library are normally made whenever:
* AB tests new bullets
* AB Accumulates more test data on existing bullets
* AB runs tests to further ranges than previous tests
Typically, changes to assessed performance are small (under 2%) representing only about 1 or 2 clicks of difference at 1000 yards. But sometimes the shift is more substantial.
Bryan Litz added: “The updates don’t always change performance a lot, some are just small tweaks. Typically you would build a new gun profile from selecting the bullet in the library to get the new performance. But if you’re using BC, you can just transcribe the new one into your existing gun profile.”
Q: What’s more important — wind speed, or direction?
A: Obviously they both matter, but they do trade dominance based on direction. For example, a 10 mph wind between 2:30 and 3:30 is only changing its value from 9.7 to 10 to 9.7 mph (bracket of 0.3 mph). However a 10 mph wind between 11:30 and 12:30 is changing its cross wind component value from 2.6 mph left to zero to 2.6 mph right (bracket of 5.2 mph). There is the same 30° change in direction, but this results in a massively different bracket.
Point being, in this case, a direction change is far more critical if it’s near 6 or 12 o’clock. A small direction change when it’s close to 3 or 9 o’clock is negligible.
On the contrary, a change in wind SPEED when it’s near 3 or 9 affects your crosswind component directly. But for a near head or tail wind, a fluctuation in wind speed only causes a small fraction of a change to the crosswind component.
SUMMARY: If you’re in a near full-value wind, pay more attention to wind SPEED. If you’re closer to a head- or tail-wind, nailing the exact DIRECTION will be more important.
Get More Tips on Bryan Litz Ballistics Facebook Page
This post is from the new Bryan Litz Ballistics Facebook Page. FB users should check that page regularly for more tips from Bryan, American’s leading ballistics expert and founder of Applied Ballistics LLC.
Are you curious about bullet stabilization? Do you understand why bullets can tumble or become unstable if the velocity gets too low or if the twist rate is inadequate. Here is an excellent video from Gunwerks that explains Bullet Stabilization.
This animated video starts by showing the design/shape differences between an older-style rifle bullet and a newer VLD-style bullet with higher BCs (Ballistic Coefficients). Generally speaking, the longer a bullet gets relative to diameter, the more RPM is required for stability. And to achieve that higher RPM you need more barrel twist and/or more RPM. The video illustrates where the Center of Gravity and the Center of Pressure are located. These are farther apart (in relative terms) for a VLD or Hybrid-style, long-nose bullet.
When the bullet is in flight there is an angle of attack. This is exaggerated in the animation for illustration purposes, but it is important to understand the the attack angle affect stability. The rotation rate (Revolutions Per Minute) is a function of bullet velocity as it leaves the muzzle and the twist rate of the barrel. Since long VLD-style bullets need more stability, the barrel twist rate needs to be higher than with shorter, fatter bullets. This is pretty much try for all calibers.
The importance of adequate barrel twist rates for bullet stabilization is further discussed in this next video featuring Bryan Litz of Applied Ballistics:
Bullet Stability and Twist Rates
In this video, Bryan Litz talks about bullet in-flight stability and how to calculate barrel twist-rate requirements for long-range bullets. Bryan explains that bullet stability (for conventional projectiles) is basically provided by the spinning of the bullet. But this spin rate is a function of BOTH the nominal twist rate of the barrel AND the velocity of the projectile. Thus, when shooting the same bullet, a very high-speed cartridge may work with a slower barrel twist rate than is required for a lower-speed (less powerful) cartridge. For match bullets, shot at ranges to 1000 yards and beyond, Bryan recommends a twist rate that offers good stability.
Here’s a smart tip from Bryan Litz, explaining how damage to a bullet jacket can harm the projectile’s Ballistic Coefficient (BC). This tip is posted on Bryan’s new Bryan Litz Ballistics Facebook page. We recommend you subscribe to that page to access Bryan’s latest informative posts.
Bryan notes: “If the case mouth scratches the bullet when you seat it, the damage can cause the BC to be inconsistent, which shows up as vertical dispersion at long range.”
We see this sometimes when running Doppler Radar for competitors at Applied Ballistics Mobile Lab events. If someone is shooting a bullet that typically has a very consistent BC (1% or less) but they’re seeing a higher BC variation, it can be due to the bullets being damaged in the loading process.”
The lead photo above shows the badly-scratched jacket of a bullet seated in a rough-mouthed case. To prevent such jacket damage, one should chamfer, deburr, and smooth case mouths after trimming.
Below is a recorded Doppler radar result showing excessive BC variation. Such variation can increase vertical dispersion at long range. This can result in larger group sizes and lower scores.
“Shoot Like a Champion”. Bryan Litz, author of Applied Ballistics for Long-Range Shooting, says he often sees notes like this tucked in shooter’s gear (or taped to an ammo box) at matches. What “marksmanship mantras” do you use? Do you have a favorite quote that you keep in mind during competition?
On the Applied Ballistics Facebook Page, Bryan invited other shooters to post the motivating words (and little reminders) they use in competition. Here are some of the best responses:
“Shoot 10s and No One Can Catch You…” — James Crofts
“You Can’t Miss Fast Enough to Win.” — G. Smith
“Forget the last shot. Shoot what you see!” — P. Kelley
“Breathe, relax, you’ve got this, just don’t [mess] up.” — S. Wolf
“It ain’t over ’til the fat lady sings.” — J. McEwen
“Keep calm and shoot V-Bull.” — R. Fortier
“Be still and know that I am God[.]” (PS 46:10) — D.J. Meyer
“Work Hard, Stay Humble.” — J. Snyder
“Shoot with your mind.” — K. Skarphedinsson
“The flags are lying.” — R. Cumbus
“Relax and Breathe.” — T. Fox
“Zero Excuses.” — M. Johnson
“SLOW DOWN!” — T. Shelton
“Aim Small.” — K. Buster
“Don’t Forget the Ammo!” (Taped on Gun Case) — Anonymous
PARTING SHOT: It’s not really a mantra, but Rick Jensen said his favorite quote was by gunsmith Stick Starks: “Them boys drove a long ways to suck”. Rick adds: “I don’t want to be that guy”, i.e. the subject of that remark.
Right now the 2025 Southwest Nationals 1000-yard individual competition is underway at the Ben Avery range outside Phoenix. Along with the F-Class matches (for F-TR and F-Open), there is a “hard-hold” division with competitors shooting rifles with sling in prone position. At the SWN this sling division has two sub-classes: “A” for “Any Rifle, Any Sight” and “P” for Palma rifles. These Palma rifles must shoot with iron sights, and they are limited to two chamberings: .223 Remington (5.56×45) and .308 Winchester (7.62×51). These Palma rifles typically feature long barrels for enhanced velocity, and a sophisticated stock that offers multiple adjustments.
Palma rifle division shooter at the Southwest Nationals a few seasons back.
Today’s Saturday showcase we features six videos showing key features of modern Palma rifles. In addition, we offer insight into loading the .308 Win cartridge for long-range accuracy. Even with iron sights, modern top-tier Palma rifles are capable of shooting exceptional scores at 600 to 1000 yards.
About Palma Rifle Competition
The Palma discipline is a prone Iron Sight competition that originated in 1876, making it the second oldest continuing rifle match in the world. Except for a hiatus in the late 1900s, there is a nearly 150-year history of Palma matches. The Palma Course of Fire includes stages at 800, 900, and 1000 yards. At each yard-line you get two (2) sighting shots followed by 15 shots for record, for a grand total of 51 shots.
Under U.S.A. Palma rules the gun must be a rifle with metallic sights chambered for .308 Win (7.62×51) or .223 Rem (5.56×45). Most of the rifles featured in these videos are chambered for .308 Winchester, but we do have a video of John Whidden shooting his .223 Rem Palma gun — you’ll notice the significantly reduced recoil. CLICK HERE for more information on Palma Rules.
Here is Bryan Litz, creator of Applied Ballistics software, with his .308 win Palma rig.
Components of Modern Palma Rifle and Palma Competition Basics
We definitely recommend you watch this video. Hosted by SSG Robert Germanelo of the U.S. Marine Corps Shooting Team, this video explains the basic rules of Palma competition and covers the key features of a modern, tubegun-style Palma rifle. The featured rifle has a Eliseo Competition Machine stock, Krieger 30″ 1:13″-twist barrel, Defiance Machine single-shot Rem 700-compatible action, Jewell trigger, Warner Tool Aperture Rear Sight, and Stallings Machine “Right Sight” in the front.
John Whidden Shoots His Modern .223 Rem Palma Rifle
With the latest bullets, long barrels, and strong Lapua brass, the .223 Rem CAN compete successfully in modern Palma competition. Here we feature a .223 Rem Palma rig belonging to 5-time NRA Long Range Champion John Whidden. Watch video at 00:25 and you’ll see the recoil of Whidden’s .223 Rem Palma rifle is significantly less than a .308 Win Palma rig. John joked: “With the .223 Rem there is just a pop and a wiggle after the shot.” CLICK HERE for full 1200-word report on this rifle with many more photos.
Modern .308 Win Palma Rifle with Custom Anschutz-style Stock
Here a Palma competitor showcases his modern .308 Win Palma rifle built with an custom-made, Anschutz 1913 model-style stock with the main frame crafted by the host’s father. This rig has a 30″ barrel chambered for 155gr bullets. The video explains how the components were chosen, why the barrel is so long, and how the stock adjusts in numerous ways to fit the shooter’s particular prone style. Below is a diagram of the sight picture. This is covered at 1:56 in the video.
Palma Rifles Shooting 1000 Yards at Bisley in the UK
This UK-produced video features Palma matches at the Stickledown Range at Bisley. This video showcases the Inter-Counties match, where competitors use iron-sighted Palma rifles on targets at 1000 yards. This video provides a good introduction to the Palma discipline as practiced in Great Britain.
Canadian Palma Fun — Nova Scotia Shooters at 900 Yards
In this video, filmed at a beautiful range in Nova Scotia, two Canadian shooters compete at 900 yards with their iron sighted .308 Win Palma rifles. The video combines three different views into one frame, so you can simultaneously see downrange, see the shooters, and see the shot impact on the electronic target display. The shooters fired .308 Win cartridges loaded with Vihtavuori N140 powder and 155gr Sierra #2156 PALMA bullets.
Ballistics Guru Shoots Palma at 800 Yards
The talented Bryan Litz, head honcho of Applied Ballistics LLC, demonstrates his shooting skills in this video. Watch Byran complete the 800-yard phase of the Palma course shot at Camp Atterbury, Indiana in the summer of 2008.
Palma Chambering and Bullet Weight Limits
There is, understandably, quite a bit of confusion concerning caliber limitations for Palma rifles and Palma competition. Some folks say you can shoot a .308 Winchester (or 7.62×51) with a bullet weight up to 156 grains. Others say you can shoot a .308 Win (or 7.62×51) with any bullet weight. Still others opine that you can shoot EITHER a .223 Rem (5.56×45) or a .308 Win (or 7.62 NATO).
So who is right? Well, all these viewpoints are correct in part. That’s because different rules apply in different venues. In most, but not all United States Palma competitions, you can shoot either a .223 Rem or .308 Win with no restriction on bullet weights. But in some U.S. Matches, most notably the Spirit of America, certain prizes are limited to .308s with 156gr max bullet weights OR .223s with 81gr max bullet weights. What’s the bottom line? In most USA Palma competitions you can shoot either a .308 or a .223 with no limit on bullet weight. In International Palma competitions you can shoot either a .308 or a .223 but the max bullet weight is limited.
The 2025 Southwest Nationals (SWN) start 2/12/2025 at the Ben Avery Range outside Phoenix, AZ. The big event starts with a 600-yard Mid-Range Match. Many of the nation’s most talented F-Class and sling shooters will be there. But no matter what your skill level, it is still possible to make major mistakes that can spoil the day and/or put you out of the running for the entire match. This article aims to help competitors avoid the big errors/oversights/failures, aka “train wrecks”, that can ruin a match.
Photo by Sherri Jo Gallagher.
In any shooting competition, you must try to avoid major screw-ups that can ruin your day (or your match). In this article, past F-TR National Mid-Range and Long Range Champion Bryan Litz talks about “Train Wrecks”, i.e. those big disasters (such as equipment failures) that can ruin a whole match. Bryan illustrates the types of “train wrecks” that commonly befall competitors, and he explains how to avoid these “unmitigated disasters”.
Urban Dictionary “Train Wreck” Definition: “A total @#$&! disaster … the kind that makes you want to shake your head.”
Success in long range competition depends on many things. Those who aspire to be competitive are usually detail-oriented, and focused on all the small things that might give them an edge. Unfortunately it’s common for shooters lose sight of the big picture — missing the forest for the trees, so to speak.
Consistency is one of the universal principles of successful shooting. The tournament champion is the shooter with the highest average performance over several days, often times not winning a single match. While you can win tournaments without an isolated stellar performance, you cannot win tournaments if you have a single train wreck performance. And this is why it’s important for the detail-oriented shooter to keep an eye out for potential “big picture” problems that can derail the train of success!
Train wrecks can be defined differently by shooters of various skill levels and categories. Anything from problems causing a miss, to problems causing a 3/4-MOA shift in wind zero can manifest as a train wreck, depending on the kind of shooting you’re doing.
Below is a list of common Shooting Match Train Wrecks, and suggestions for avoiding them.
1. Cross-Firing. The fastest and most common way to destroy your score (and any hopes of winning a tournament) is to cross-fire. The cure is obviously basic awareness of your target number on each shot, but you can stack the odds in your favor if you’re smart. For sling shooters, establish your Natural Point of Aim (NPA) and monitor that it doesn’t shift during your course of fire. If you’re doing this right, you’ll always come back on your target naturally, without deliberately checking each time. You should be doing this anyway, but avoiding cross-fires is another incentive for monitoring this important fundamental. In F-Class shooting, pay attention to how the rifle recoils, and where the crosshairs settle. If the crosshairs always settle to the right, either make an adjustment to your bipod, hold, or simply make sure to move back each shot. Also consider your scope. Running super high magnification can leave the number board out of the scope’s field view. That can really increase the risk of cross-firing.
2. Equipment Failure. There are a wide variety of equipment failures you may encounter at a match, from loose sight fasteners, to broken bipods, to high-round-count barrels that that suddenly “go south” (just to mention a few possibilities). Mechanical components can and do fail. The best policy is to put some thought into what the critical failure points are, monitor wear of these parts, and have spares ready. This is where an ounce of prevention can prevent a ton of train wreck. On this note, if you like running hot loads, consider whether that extra 20 fps is worth blowing up a bullet (10 points), sticking a bolt (DNF), or worse yet, causing injury to yourself or someone nearby.
3. Scoring/Pit Malfunction. Although not related to your shooting technique, doing things to insure you get at least fair treatment from your scorer and pit puller is a good idea. Try to meet the others on your target so they can associate a face with the shooter for whom they’re pulling. If you learn your scorer is a Democrat, it’s probably best not to tell Obama jokes before you go for record. If your pit puller is elderly, it may be unwise to shoot very rapidly and risk a shot being missed (by the pit worker), or having to call for a mark. Slowing down a second or two between shots might prevent a 5-minute delay and possibly an undeserved miss.
Photo by Sherri Jo Gallagher.
4. Wind Issues. Tricky winds derail many trains. A lot can be written about wind strategies, but here’s a simple tip about how to take the edge off a worse case scenario. You don’t have to start blazing away on the command of “Commence fire”. If the wind is blowing like a bastard when your time starts, just wait! You’re allotted 30 minutes to fire your string in long range slow fire. With average pit service, it might take you 10 minutes if you hustle, less in F-Class. Point being, you have about three times longer than you need. So let everyone else shoot through the storm and look for a window (or windows) of time which are not so adverse. Of course this is a risk, conditions might get worse if you wait. This is where judgment comes in. Just know you have options for managing time and keep an eye on the clock. Saving rounds in a slow fire match is a costly and embarrassing train wreck.
5. Mind Your Physical Health. While traveling for shooting matches, most shooters break their normal patterns of diet, sleep, alcohol consumption, etc. These disruptions to the norm can have detrimental effects on your body and your ability to shoot and even think clearly. If you’re used to an indoor job and eating salads in air-conditioned break rooms and you travel to a week-long rifle match which keeps you on your feet all day in 90-degree heat and high humidity, while eating greasy restaurant food, drinking beer and getting little sleep, then you might as well plan on daily train wrecks. If the match is four hours away, rather than leaving at 3:00 am and drinking five cups of coffee on the morning drive, arrive the night before and get a good night’s sleep.”
Keep focused on the important stuff. You never want to lose sight of the big picture. Keep the important, common sense things in mind as well as the minutia of meplat trimming, weighing powder to the kernel, and cleaning your barrel ’til it’s squeaky clean. Remember, all the little enhancements can’t make up for one big train wreck!
Have you recently purchased a new scope? Then you should verify the actual click value of the turrets before you use the optic in competition (or on a long-range hunt). While a scope may have listed click values of 1/4-MOA, 1/8-MOA or 0.1 Mils, the reality may be slightly different. Many scopes have actual click values that are slightly higher or lower than the value claimed by the manufacturer. The small variance adds up when you click through a wide range of elevation.
In this video, Bryan Litz of Applied Ballistics shows how to verify your true click values using a “Tall Target Test”. The idea is to start at the bottom end of a vertical line, and then click up 30 MOA or so. Multiply the number of clicked MOA by 1.047 to get the claimed value in inches. For example, at 100 yards, 30 MOA is exactly 31.41 inches. Then measure the difference in your actual point of impact. If, for example, your point of impact is 33 inches, then you are getting more than the stated MOA with each click (assuming the target is positioned at exactly 100 yards).
How to Perform the Tall Target Test
The objective of the tall target test is to insure that your scope is giving you the proper amount of adjustment. For example, when you dial 30 MOA, are you really getting 30 MOA, or are you getting 28.5 or 31.2 MOA? The only way to be sure is to verify, don’t take it for granted! Knowing your scopes true click values insures that you can accurately apply a ballistic solution. In fact, many perceived inaccuracies of long range ballistics solutions are actually caused by the scopes not applying the intended adjustment. In order to verify your scope’s true movement and calculate a correction factor, follow the steps in the Tall Target Worksheet. This worksheet takes you thru the ‘calibration process’ including measuring true range to target and actual POI shift for a given scope adjustment. The goal is to calculate a correction factor that you can apply to a ballistic solution which accounts for the tracking error of your scope. For example, if you find your scope moves 7% more than it should, then you have to apply 7% less than the ballistic solution calls for to hit your target.
NOTE: When doing this test, don’t go for the maximum possible elevation. You don’t want to max out the elevation knob, running it to the top stop. Bryan Litz explains: “It’s good to avoid the extremes of adjustment when doing the tall target test.I don’t know how much different the clicks would be at the edges, but they’re not the same.”
Should You Perform a WIDE Target Test Too?
What about testing your windage clicks the same way, with a WIDE target test? Bryan Litz says that’s not really necessary: “The wide target test isn’t as important for a couple reasons. First, you typically don’t dial nearly as much wind as you do elevation. Second, your dialed windage is a guess to begin with; a moving average that’s different for every shot. Whereas you stand to gain a lot by nailing vertical down to the click, the same is not true of windage. If there’s a 5% error in your scope’s windage tracking, you’d never know it.”
Verifying Scope Level With Tall Target Test
Bryan says: “While setting up your Tall Target Test, you should also verify that your scope level is mounted and aligned properly. This is critical to insuring that you’ll have a long range horizontal zero when you dial on a bunch of elevation for long range shots. This is a requirement for all kinds of long range shooting. Without a properly-mounted scope level (verified on a Tall Target), you really can’t guarantee your horizontal zero at long range.”
NOTE: For ‘known-distance’ competition, this is the only mandatory part of the tall target test, since slight variations in elevation click-values are not that important once you’re centered “on target” at a known distance.
Bryan Litz and The Science of Accuracy Academy delivered a notable Podcast with vital information for all handloaders. This Podcast examines the effects of humidity variances on powder. Bryan notes: “If you want to know how much this can matter, we’re talking up to 200 fps difference for the same load of H4350 in 6.5 Creedmoor” at opposite extremes of humidity.
Bryan adds that “Most shooters don’t realize what a big deal this can be — it overshadows many of our efforts to make consistent velocity and hit targets. This can happen in loaded rounds not just for hand loading where you expose powder to ambient humidity. This is especially important for hunters considering the range of environments hunting ammo goes through.”
CLICK the above graphic to access first half of Podcast for free.
BONUS — Four More Science of Accuracy Podcasts
Here are four more of our favorite Podcasts from Bryan Litz’s Science of Accuracy Academy. Click on each item to hear the first half of each podcast for free.
Want More? Subscribe to The Science of Accuracy Academy
If you’d like to benefit from hearing ALL the full-length Science of Accuracy Academy Podcasts you can get a subscription to the Academy for just $9.95 per month. This grants you access to all Podcasts, exclusive videos, learning resources, and bullet data sheets.
Effects Of Cartridge Over All Length (COAL) And Cartridge Base To Ogive (CBTO) – Part 2
On his 
“Shoot Like a Champion”. Bryan Litz, author of 
Train Wrecks (and How to Avoid Them)
4. Wind Issues. Tricky winds derail many trains. A lot can be written about wind strategies, but here’s a simple tip about how to take the edge off a worse case scenario. You don’t have to start blazing away on the command of “Commence fire”. If the wind is blowing like a bastard when your time starts, just wait! You’re allotted 30 minutes to fire your string in long range slow fire. With average pit service, it might take you 10 minutes if you hustle, less in F-Class. Point being, you have about three times longer than you need. So let everyone else shoot through the storm and look for a window (or windows) of time which are not so adverse. Of course this is a risk, conditions might get worse if you wait. This is where judgment comes in. Just know you have options for managing time and keep an eye on the clock. Saving rounds in a slow fire match is a costly and embarrassing train wreck.
Verifying Scope Level With Tall Target Test
