33XC — Popular ELR Cartridge
Paul Phillips is a past King of 2 Miles (K02M) winner. The founder of the Global Precision Group, Paul is one of the top ELR marksmen on the planet. He has also been a team-mate of past K02M winners.
In 2019, Paul had this rifle built for the 25-lb max, .338 caliber-or-under ELR Class. This is chambered for the 33XC, an efficient cartridge devised by 11-time National HP Champion David Tubb. With promising initial testing at 500 yards, it looks like Paul’s 33XC project is a success. The rifle’s first match was the NRA Extreme Long Range Championship held in 2019 at Camp Atterbury, Indiana.
Paul reports: “The 33XC is ready… I have tested loads from 3100-3450 FPS and and will settle on a load around 3250 FPS [which is] my most accurate load so far. The Peterson Cartridge brass is really working well.”
Paul states he would like to look for a higher node from 3300-3400 GPS: “Next stop is with the Applied Ballistics LLC mobile labratory and radar testing with a PDM.” Paul cautions: “I encourage everyone to start low and work up. Every chamber, barrel, and components are a little different.”
During initial testing, Paul’s 33XC put three shots in 0.27″ at 100. Then, at 500 yards, the rifle produced a 3-shot group around 1/3-MOA with just 1.22 inches of vertical. That’s pretty impressive for early testing. Paul will also be trying some Berger bullets soon. When he determines the most accurate load, Phillips will stretch the rifle’s legs, shooting out to 2500 yards and beyond.
Quote: “The Cutting Edge Bullets are not the highest BC but they are very stable and consistent at ELR (sub-sonic) ranges and that’s the most important factor in finding the best ELR bullet. I actually test all my bullets at sub-sonic speeds to make sure they are consistent and stable. Finding a good load at 500 yards is just the first part. The real test is shooting them at sub-sonic speeds and see how consistently they group. This is what gives you the highest percentage to impact at 2 miles and beyond.”
This rifle features a BAT action mated to a 34″ Bartlein barrel chambered for David Tubb’s new 33XC cartridge. Paul Phillips is currently running Cutting Edge 275gr Lazer solid bullets. Paul notes: “I also have a .338 Lapua Magnum barrel and 300gr Berger bullets for the restricted class in France.” Paul gave special thanks to Alex Wheeler for doing the metal work and Alex Sitman for doing the bedding.
Rifle Component List
Action: BAT Machine CTH dual-port action
Trigger: Bullet Central Bix’N Andy
Barrel: Bartlein 1:8″-twist barrel (34″)
Chambering: 33XC for Peterson brass
Stock: McMillan A6 Super Mag, Bedding Alex Sitman
Scope: Nightforce Optics 7-35x56mm F1 ATACR.
Bipod: Duplin Rifles
Paul Phillips notes: “Alex Sitman has been bedding rifles stocks for most of his life. I believe that [bedding] is a very important … to keep consistent accuracy and repeatable zeros after traveling all over the globe.”
Even with the TacomHQ Charlie Tarac scope prism in place, the rifle makes the 25-pound weight limit with Duplin Rifles bipod. Paul says: “I love it when a plan comes together!! I’m under by 2 ounces!”
About the 33XC (eXtra Capacity) Cartridge
David Tubb invented the 33XC cartridge because he thought the CheyTac cases were too much trouble — requiring a larger action, oversize presses, and ultra-expensive dies. The 33XC was designed to fit .338 Lapua Magnum-size actions and use normal reloading presses.
The 33XC (eXtra Capacity) has 137.5 grains of H2O capacity with over 125 grains of usable powder capacity while leaving the 0.393″ neck unfilled for bullet seating.
The 33XC has a .338 Lapua Magnum lineage. Think of it as a better, 35°-shoulder .338 LM. David explains: “The 33XC uses standard reloading dies along with a 7/8″ x 14 TPI reloading press. There is no fire-forming — all case ‘improving’ has already been done with a production case that has 20 grains more powder capacity, 35-degree shoulder, and longer neck compared to a .338 Lapua Magnum. This puts the various .338 Lapua wildcats and the Rem Ultra Mag Improved into the ‘also ran’ category. They simply can’t compete with the velocities attainable with the 33XC.”
The 33XC is based off of a .580″ bolt head. Tubb states that “A fired case will extract with little effort when using a properly-polished chamber with a maximum powder charge after resizing with the Superior Shooting Systems FL sizing die.” Tubb’s 33XC die reaches the case head which is important for accuracy. Peterson Cartridge produces the 33XC brass for Superior Shooting Systems. This high-quality brass costs $260 for 100 cases (i.e. $2.60 per case), and can be purchased directly from Superior Shooting Systems.
Bonus Video — Global Precision Group Team Makes 4-Mile Hit
With a .416 Barrett rifle, Team GPG makes a 4-mile impact that is captured on video during team practice. James Devoglaer was shooting his GPG spec .416 Barrett with Team Captain Paul Phillips doing the ballistics and wind. Spotters were David Parrish and Derek Rodgers. Forward Observers were John Droelle and Mauro Del Mastro. Approximately 60 shots were taken before impact. There were four 3-shot groups that measured under 2 MOA at 4 miles. The .416 Barrett cartridges were loaded with 550gr Cutting Edge bullets and Vihtavuori powder.
Today’s Sunday GunDay story features Corbin Shell’s remarkable, record-setting .416 Barrett. With a 40″ Krieger barrel secured in a massive barrel block, this is definitely a big boomer!
Back in 2019, Forum member Corbin Shell set an Extreme Long Range (ELR) record. With no sighters or warm-up shots, Corbin put three (3) shots on a 36″ x 36″ steel plate at 2118 yards, establishing a Cold Bore ELR World Record (the best at the time). The range was verified with three rangefinders and the string was witnessed by 20+ shooters. In 2019 Applied Ballistics reported: “There is a new official ELR World Record. 2118 yards. 3 for 3 cold bore.” This was also recognized as a record by the FCSA (Fifty Caliber Shooting Association). NOTE: The ELR record has been bettered in more recent years, including a 2298-yard, 3-shot performance in 2020 by Randy Newton.*
This record was set at the ELR Southeast Shootout held at the Arena Training Facility in Blakely, Georgia, on March 2, 2019. The World Record attempt was made in compliance with all ELR Central Rules.
Corbin Shell (on right) stands next to Joe Burdick, match director. That’s three hits on 36″ x 36″ plate.
ELR Ain’t Cheap — $6.55 Cost per Shot
In 2019 Corbin told us: “Each round fired cost approximately $6.55. The breakdown is as follows: bullet $3.05, powder $0.80, primer $0.50, cartridge case $1.00 (based on five firings), barrel wear $1.20 per shot based on 1000 rounds of barrel life. Hitting steel at distance: PRICELESS!”
Editor’s NOTE: With the significant inflation we’ve seen in the past 5 years, with major increases in the cost of powder and primers, we bet today’s cost per shot would be closer to $9.00 per round fired with the same formula including barrel cost.
ELR Record .416 Barrett Rifle Components
Action: BAT .50 caliber EX, multi-flat, with hard coat finish, extra CheyTac bolt. Barrel: Krieger cut-rifled, .416 caliber, 40″ finish length, 1:9″ twist. Barrel Block: Doyle Anglin Dixie Gunworks, integral Picatinny rail. Muzzle Brake: Ryan Pierce 5-port magnum. Stock: Designed and fabricated by Doyle Anglin, Dixie Gunworks. Obeche laminate, Indian Blanket color scheme. 48″ long excluding butt hardware. Butt and Cheekpiece Hardware: Master Class/Alex Sitman, extended rods. Scope: Sightron SIII 6-24x50mm MOA reticle item #25127. 100 MOA elevation/windage. Bipod: Duplin Rifles by Clint Cooper. Weight: One pound, 2 ounces. Gunsmith: Rifle builder was Doyle Anglin, Dixie Gunworks, Winder, GA.
If you want to learn more about this record-setting rifle, Corbin has prepared a 6-page project history describing all the components and explaining how the rifle was constructed. This Build Document also contains a wealth of information about loading for the .416 Barrett cartridge.
Conditions During Record:
Corbin tells us: “This was shot in Blakely, Georgia at the Arena Training Facility in good Ole dense Southern air. Here are the atmospheric conditions when I shot: 70 degree temperature, 29.70-29.80 inches of mercury, 82% humidity, 1211 Density Altitude (DA).”
Corbin noted that the unique barrel block with rail helps with ELR Optics: “This custom-made barrel block is drilled length wise to reduce weight. It incorporates an integral Picatinny rail which… facilitates mounting of … the Tacom Charlie/Delta TARAC prism system, without the need to bridge mount.” Charlie/Delta TARAC units effectively offset the view that comes into the scope, providing up to 625 MOA elevation.
ELR Cold Bore Shot Record Rules
Congratulations to Corbin Shell for setting an ELR World Record in 2019. This record was shot under a very specific set of rules established by ELR Central and industry leaders. For more ELR record information, go to ELR Central Facebook Page. There you will see more recent ELR Record rifles.
* Prior to Corbin Shell’s performance with his monster .416 Barrett, David Tubb shot a 2200-yard, 3-shot group that has been recognized as a FCSA record. However, because David had made a same-day attempt, within minutes, with a different rifle, this did not comply with the ELR Central Rules. So, officially Corbin Shell was recognized as the ELR Central World Record Holder.
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Magnified 8X view looking down-range at bison (American buffalo) target.
Could You Hit a Steel Bison at 2240 Yards (1.27 miles) … with Iron Sights?
Impossible as that may seem, that’s exactly what Ernie Jimenez did some years back at the North Springs Shooting Range in Price, Utah (elevation 5,627′). Shooting a milsurp Swiss K31 rifle chambered for the 7.5×55 Swiss round, Jimenez placed four hits on a three-foot-high, bison-shaped steel target placed a staggering 2240 yards from the firing line. Not bad for a rifle which Jimenez acquired many years ago for just $99.00. Of course he did have plenty of misses along the way (and Ernie even managed to hit the plate shielding his camera).
This video is set to start half-way through, when the shooter starts making hits:
The whole process was recorded on video and posted on YouTube. The Long-Range Shooters of Utah say this is an official Guinness World Record for longest shot with iron sights. We can’t confirm that, but it still is an impressive feat. Jimenez had to compensate for a huge amount of bullet drop. His K31’s long-range military sights helped but he still had to aim well over the pink bison. To see how far that target is, watch the video at 14:30 — a camera at the firing line zooms all the way back until the bison is nothing but a tiny dot. The photo below show the target at 8X magnification, but it’s still barely visible.
Here’s the unmagnified, “naked-eye” view from the firing line. Can you see a pink buffalo at all?
Bullet Dropped Over 400 Feet along its Trajectory
To roughly gauge the bullet drop, we took a 7.5x55mm Swiss load from the Hodgdon Reloading Center. With max “book” load of H4350, a 168gr Sierra HPBT has a muzzle velocity of 2524 FPS. According to JBM Ballistics, that bullet will drop over 400 feet during its flight. That’s lot of hold-over! Assuming a 100-yard zero, 59° temp, and 5,600′ altitude, JBM calculates that the drop to 2250 yards is a stunning 210.9 MOA — that’s 4969.9 inches, or 414.15 feet!
In the first part of the video, shooter Ernie Jimenez talks about his hand-loads and his K31 rifle. Here is an example of the distinctive straight-pull K31 (Karabiner Model 1931). Image courtesy AIM Surplus.
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A few seasons ago, Texas gunsmith Richard King built an impressive .50 BMG target rifle for a customer. Equipped with a beefy McMillan stock, this rig has delivered some very impressive accuracy. Check out that target shot during break-in. Using On Target software, we measured this 3-shot group at 0.476″ or 0.454 MOA. Not bad for a beast with VERY serious recoil. Do you think you could beat that 0.476″ with your AR15 shooting puny .223-caliber bullets?
Compare the dimensions of that massive 50-Cal action to a Rem 700 action in the middle. When you’re shooting a Fifty, size matters!
On Facebook, some folks were surprised a guy could wring that kind of accuracy out of a monster .50 BMG. One wag posted: “Yikes! He will need flinch therapy after shooting that beast.”
Another Facebooker joked: “When shooting a .50 BMG you say…In your best Crocodile Dundee voice…that’s not a gun, THIS is a gun!”
Richard King responded that this customer has quite a bit of experience with jumbo-caliber rifles: “Remember this is the guy that shot a .338 Lapua in a two-day F-Class match. Recoil might actually be easier on this 50, given the fact that it has more weight and a brake.”
Richard King showed us the monster 13-lb BAT action for this rifle at the 2018 Berger SWN. Honestly, the big BAT .50 BMG action was HUGE — with the bolt fully extended it was the size of your forearm (to the finger tips). Richard joked “This weighs almost as much as an F-TR rifle (before optic) all by itself”.
Specialty Tools for the Big .50 BMG
Yes, the .50 BMG is one huge cartridge. Thankfully, there are some special tools for loading the jumbo-size round. Giraud Tool produces a specialty comparator for the 50-Cal cartridge. The double-ended .50 BMG comparator is quite versatile. In one orientation you can measure base-to-ogive bullet length and also measure cartridge OAL from rim to bullet ogive. When reversed, you can use the comparator to measure cartridge headspace. Priced at $33.00, Giraud 50 BMG Comparator gauge is constructed of 303 stainless and fits most any vernier, dial, or digital caliper. CLICK HERE for more info.
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In the ELR game, particularly the King of 2 Miles (KO2M), it’s “go big or go home”. The top shooters run large-capacity cartridges that push large-caliber, ultra-high BC bullets at very high velocities. Bullets launched by cartridges such as the .416 Barrett can sustain supersonic velocities at Extreme Long Ranges — and that’s what it takes to win. The .416 Barrett can launch a 550-grain solid bullet at 3000+ FPS.
Photo from ELR Competitor Corbin Shell.
2018 and 2019 Kings of 2 Miles Loaded on RCBS Presses
So how do you load jumbo cartridges such as the .416 Barrett? It takes a big, heavy, super-strong reloading press. We’ve learned that two recent King of 2 Miles champions, Paul Phillips (2019) and Robert Brantley (2018) both loaded their KO2M ammo on RCBS AmmoMaster .50 BMG presses. Phillips loaded .416 Barrett ammo, while Brantley loaded a similar .416 MCS cartridge.
In 2018, Robert Brantley topped the field using his custom .416 MCS cartridge. Then in 2019, Paul Phillips won the K02M competition shooting a .416 Barrett, with Brantley a close second. Both Phillips and Brantley use the RCBS AmmoMaster .50 BMG single stage press kit and RCBS .416 Barrett dies to hand-load for extreme long-range. “My ammo has been much more consistent after switching to the RCBS press and dies,” remarked Phillips, who runs the Global Precision Group. Brantley said he uses RCBS products for most of his reloading needs — from the dies and AmmoMaster, to the ChargeMaster and Brass Boss. His custom .416 MCS loads launch a 550-grain bullet more than 3,100 fps.
Loading with RCBS AmmoMaster .50 BMG Press
This video shows reloading with the RCBS AmmoMaster .50 BMG press. While this video shows .50 BMG cases being loaded, the principles are the same for loading the .416 Barrett cartridge or other big rounds. Big cases need big presses!
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When we first ran this story a few seasons back, it proved immensely popular with our readers. In case you missed it the first time around, check out what can be done with a factory Savage 110 BA at extreme long range — 1760 yards (one mile). Shooter Mark Dalzell did a great job with the video, which features multiple camera views so you can see the shooter and the target at the same time. Enjoy!
This video by Mark Dalzell demonstrates the long-range capabilities of the Savage 110 BA chambered in .338 Lapua Magnum. Mark took his “BadAss” rig out to the southwest Nevada desert just north of Jean Dry Lakes. He placed a 2’x3′ target way, way out there — a full mile (1760 yards) away. At that range, flight time to target was 3.75 seconds! Sighting with a Nightforce 5-22x50mm NXS scope, Mark needed a few shots to get on target, but eventually made multiple hits, using 67 MOA of elevation and 2.25 MOA left windage. You can view the hits starting at 1:56 time-mark on the video. (Mark had a second camera set up closer to the target — this displays frame in frame in the video, and if you watch carefully you can see the strikes.) The ammo was HSM 250gr HPBT match with a 3.600″ COAL. The shooting was done at 8:13 in the morning, with clear conditions, very light winds. Temp was 57°, humidity 24.5, Density Altitude 3666. Video soundtrack is La Grange by ZZ Top.
PLAY BUTTON
LISTEN TO MARK TALK about One Mile Shooting:
CLICK Play Button to hear Mark Dalzell TALK about his .338 LM Savage 110 BA and how he scored hits at 1760 yards.
Good Shooting Mark. That’s darn good for a factory rifle. You also had the elevation dialed in real close before the firing started! That shows a good knowledge of your ammo’s long-range ballistics. We also noticed how effective that muzzle brake was. Recoil looked about the same as an un-braked .308 Win.
.338 Lapua Magnum Cartridge Diagram
If you thought Mark’s 1760-yard shooting was impressive, Mark has produced another video that shows a session at even greater distances — out to 2300 yards. Watch Mark Dalzell Shoot at 2300 Yards.
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The Coriolis Effect comes into play with extreme long-range shots like this (2100 yards at Raton, New Mexico). The rotation of the earth actually moves the target a small distance (in space) during the long duration of the bullet’s flight.
When you’re out at the range, the Earth seems very stable. But it is actually a big sphere zooming through space while spinning around its axis, one complete turn every 24 hours. The rotation of the earth can create problems for extreme long-range shooters. During extended bullet flight times, the rotation of the planet causes an apparent deflection of the bullet path over very long distances. This is the ballistics manifestation of the Coriolis Effect.
Bryan Litz of Applied Ballistics discusses and explains the Coriolis Effect in his Ballistics Books and Seminars. Bryan notes that Coriolis is “a very subtle effect. People like to make more of it than it is because it seems mysterious.” In most common shooting situations inside 1K, Coriolis is not important. At 1000 yards, the Effect represents less than one click (for most cartridge types). Even well past 1000 yards, in windy conditions, the Coriolis Effect may well be “lost in the noise”. But in very calm conditions, when shooting at extreme ranges, Bryan says you can benefit from adjusting your ballistics solution for Coriolis.
Bryan explains: “The Coriolis Effect… has to do with the spin of the earth. You are basically shooting from one point to another on a rotating sphere, in an inertial reference frame. The consequence of that is that, if the flight time of the bullet gets significantly long, the bullet can have an apparent drift from its intended target. The amount [of apparent drift] is very small — it depends on your latitude and azimuth of fire on the planet.”
Coriolis is a very subtle effect. With typical bullet BCs and velocities, you must get to at least 1000 yards before Coriolis amounts to even one click. Accordingly, Bryan advises: “Coriolis Effect is NOT something to think about on moving targets, it is NOT something to think about in high, uncertain wind environments because there are variables that are dominating your uncertainty picture, and the Coriolis will distract you more than the correction is worth.”
“Where you could think about Coriolis, and have it be a major impact on your hit percentage, is if you are shooting at extended range, at relatively small targets, in low-wind conditions. Where you know your muzzle velocity and BC very well, [and there are] pristine conditions, that’s where you’re going to see Coriolis creep in. You’ll receive more refinement and accuracy in your ballistics solutions if you account for Coriolis on those types of shots. But in most practical long-range shooting situations, Coriolis is NOT important. What IS important is to understand is when you should think about it and when you shouldn’t, i.e. when applying it will matter and when it won’t.”
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This is one of the very best books ever published about Long Range shooting. Based on sophisticated testing and research, this 356-page hardcover from Applied Ballistics offers important insights you won’t find anywhere else. Modern Advancements in Long Range Shooting – Volume II, a major treatise from Bryan Litz, is chock full of information, much of it derived through sophisticated field testing. As Chief Ballistician for Berger Bullets (and a trained rocket scientist), author Bryan Litz is uniquely qualified. Bryan is also an ace sling shooter and a past F-TR National Champion. Moreover, Bryan’s company, Applied Ballistics, has been a leader in the Extreme Long Range (ELR) discipline.
AUDIO FILE: Bryan Litz Talks about Modern Advancements in Long Range Shooting, Volume 2. (Sound file loads when you click button).
Volume II of Modern Advancements in Long Range Shooting ($44.95) contains all-new content derived from research by Applied Ballistics. Author Bryan Litz along with contributing authors Nick Vitalbo and Cal Zant use the scientific method and careful testing to answer important questions faced by long range shooters. In particular, this volume explores the subject of bullet dispersion including group convergence. Advanced hand-loading subjects are covered such as: bullet pointing and trimming, powder measurement, flash hole deburring, neck tension, and fill ratio.
Each topic is explored with extensive live fire testing, and the resulting information helps to guide hand loaders in a deliberate path to success. The current bullet library of measured G1 and G7 ballistic coefficients is included as an appendix. This library currently has data on 533 bullets in common use by long range shooters.
Bryan tells us that one purpose of this book is to dispel myths and correct commonly-held misconceptions: “Modern Advancements in Long Range Shooting aims to end the misinformation which is so prevalent in long range shooting. By applying the scientific method and taking a Myth Buster approach, the state of the art is advanced….”
Bullet Dispersion and Group Convergence
Part 1 of this Volume is focused on the details of rifle bullet dispersion. Chapter 1 builds a discussion of dispersion and precision that every shooter will benefit from in terms of understanding how it impacts their particular shooting application. How many shots should you shoot in a group? What kind of 5-shot 100 yard groups correlate to average or winning precision levels in 1000 yard F-Class shooting?
Chapter 2 presents a very detailed investigation of the mysterious concept of group convergence, which is the common idea that some guns can shoot smaller (MOA) groups at longer ranges. This concept is thoroughly tested with extensive live fire, and the results answer a very important question that has baffled shooters for many generations.
Part 2 of this Volume is focused on various aspects of advanced hand-loading. Modern Advancements (Vol. II) employs live fire testing to answer the important questions that precision hand loaders are asking. What are the best ways to achieve MVs with low ES and SD? Do flash hole deburring, neck tension, primer selection, and fill ratio and powder scales sensitivity make a difference and how much? All of these questions are explored in detail with a clear explanation of test results.
One of the important chapters of Part 2 examines bullet pointing and trimming. Applied Ballistics tested 39 different bullet types from .224 through .338 caliber. Ten samples of each bullet were tested for BC in each of the following configurations: original out of the box, pointed, trimmed, pointed and trimmed. The effect on the average BC as well as the uniformity in BC was measured and tabulated, revealing what works best.
Part 3 covers a variety of general research topics. Contributing author Nick Vitalbo, a laser technology expert, tested 22 different laser rangefinders. Nick’s material on rangefinder performance is a landmark piece of work. Nick shows how shooters can determine the performance of a rangefinder under various lighting conditions, target sizes, and reflectivities.
Chapter 9 is a thorough analysis of rimfire ammunition. Ballistic Performance of Rifle Bullets, 2nd Edition presented live fire data on 95 different types of .22 rimfire ammunition, each tested in five different barrels having various lengths and twist rates. Where that book just presented the data, Chapter 9 of this book offers detailed analysis of all the test results and shows what properties of rimfire ammunition are favorable, and how the BCs, muzzle velocities and consistency of the ammo are affected by the different barrels.
Chapter 10 is a discussion of aerodynamic drag as it relates to ballistic trajectory modeling. You will learn from the ground up: what an aerodynamic drag model is, how it’s measure and used to predict trajectories. Analysis is presented which shows how the best trajectory models compare to actual measured drop in the real world.
Finally, contributing author Cal Zant of the Precision Rifle Blog presents a study of modern carbon fiber-wrapped barrels in Chapter 11. The science and technology of these modern rifle barrels is discussed, and then everything from point of impact shift to group sizes are compared for several samples of each type of barrel including standard steel barrels.
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NOTE: The .375 CheyTac is a proprietary cartridge of CheyTac USA. CheyTac® is a registered trademark. CheyTac® bullets, brass, and ammunition are offered by CheyTac USA, which also produces a variety of high-quality firearms for civilian and military use. See all CheyTac® products at CheyTac.com.
This Extreme Long Range (“ELR”) rifle features a massive BAT “L” Round Action, McMillan Beast Stock, 38″ Bartlein 1:7″-twist Barrel, T5 Terminator Muzzle Brake, R.A.D. Recoil Reduction unit, and a customized Cheek Riser. The “Beast” stock name is appropriate — this rifle weighs a massive 38 pounds. Including the T5 brake, the finished barrel, chambered in .375 CheyTac, is 44″ long! All the work was done by Hall-of-Fame shooter and gunsmith Thomas “Speedy” Gonzales, of S.G. Precision LLC in San Antonio, Texas. To see other rifles crafted by Speedy, visit his Facebook page.
Speedy milled vents in the fore-end. He told us: “when you’re burning 150+ grains of powder you need all the ventilation you can get to help reduce the barrel heat.”
There are many good brakes out there, then there’s the “TERMINATOR”! — Speedy
The Phoenix Bipod employs a lowering modification.
About the .375 CheyTac Cartridge
Some of the most successful ELR cartridges are based on the CheyTac family, including the .375 CheyTac (9.5×77) and .408 CheyTac (10.36 x 77). This .375 CheyTac cartridge has proven to be tough and accurate. And it is capable of winning — our friend Derek Rodgers won the 2017 King of 2 Miles (K02M) event shooting a .375 CheyTac (9.5×77).
Derek Rodgers was the 2017 King of 2 Miles. He was also the first-ever human to ever hit the maximum distance target target at 3368 yards (1.91 miles). His cartridge choice? The .375 CheyTac. Derek ran Cutting Edge Bullets in Peterson brass with Hodgdon H50BMG powder.
Q: Why did you choose the .375 CheyTac cartridge?
Derek: When I was asked to join the Applied Ballistics Team, I needed to get an ELR rifle built in a short period of time. I was under a very tight time schedule to get the project complete. In an effort to eliminate variables, I decided to keep things standard and as simple as possible. I chose the .375 CheyTac for the ease of getting components. The larger rifles are more difficult to get components quickly and I felt like the .375 CheyTac had enough attributes to be competitive at ELR distances.
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Emil Praslick III is widely recognized as one of the greatest wind wizards on the planet — a master at identifying wind value and direction, and predicting wind cycles. As coach of the USAMU and top civilian teams, Emil has helped win many high-level championships. In the three videos we feature today, Emil, who works with Capstone Precision Group (Berger, Lapua, SK, Vihtavuori) and Team Applied Ballistics, explains how to determine wind direction and velocity using a variety of indicators. Praslick, now retired from the U.S. Army, was an 18-time National and 2-time World Champion coach with the USAMU.
Video ONE: Wind Theory Basics — Understanding “Wind Values”
In this video from UltimateReloader.com, Emil explains the basics of modern wind theory. To properly understand the effect of the wind you need to know both the velocity of the wind and its angle. The combination of those variables translates to the wind value. Emil also explains that the wind value may not be constant — it can cycle both in speed and velocity. Emil also explains some of the environmental conditions such as mirage that can reveal wind conditions.
Video TWO: Determining the Direction of the Wind
Key Point in Video — Find the Boil
Emil explains how to determine wind direction using optic. The method is to use spotting scope, riflescope, or binoculars to look for the “Boil” — the condition in mirage when the light waves rising straight up. The wind will generate that straight-up, vertical boil in your optics when it is blowing directly at you, or directly from your rear. To identify this, traverse your scope or optics until you see the boil running straight up. When you see that vertical boil, the direction your optic is pointing is aligned with the wind flow (either blowing towards you or from directly behind you).
Video THREE: The No Wind Zero Setting
In this second video, Emil defines the “No-Wind Zero”, and explains why competitive shooters must understand the no-wind zero and have their sights or optics set for a no-wind zero starting point before heading to a match. In order to hit your target, after determining wind speed and direction, says Emil, “you have to have your scope setting dialed to ‘no wind zero’ first.”
Coach of Champions — Emil Praslick III
SFC Emil Praslick III, (U.S. Army, retired) works with Berger Bullets and Applied Ballistics. Emil served as the Head Coach of the U.S. National Long Range Rifle Team and Head Coach of the USAMU for several years. Teams coached by Emil have won 33 Inter-Service Rifle Championships. On top of that, teams he coached set 18 National records and 2 World Records. Overall, in the role of coach, Praslick can be credited with the most team wins of any coach in U.S. Military history.
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The Coriolis Effect comes into play with extreme long-range shots like this (2100 yards at Raton, New Mexico). The rotation of the earth actually moves the target a small distance (in space) during the long duration of the bullet’s flight.
When you’re out at the range, the Earth seems very stable. But it is actually a big sphere zooming through space while spinning around its axis, one complete turn every 24 hours. The rotation of the earth can create problems for extreme long-range shooters. During extended bullet flight times, the rotation of the planet causes an apparent deflection of the bullet path over very long distances. This is the ballistics manifestation of the Coriolis Effect.
Bryan Litz of Applied Ballistics discusses explains the Coriolis Effect in his Ballistics Books and Seminars. Bryan notes that Coriolis is “a very subtle effect. People like to make more of it than it is because it seems mysterious.” In most common shooting situations inside 1K, Coriolis is not important. At 1000 yards, the Effect represents less than one click (for most cartridge types). Even well past 1000 yards, in windy conditions, the Coriolis Effect may well be “lost in the noise”. But in very calm conditions, when shooting at extreme ranges, Bryan says you can benefit from adjusting your ballistics solution for Coriolis.
Bryan explains: “The Coriolis Effect… has to do with the spin of the earth. You are basically shooting from one point to another on a rotating sphere, in an inertial reference frame. The consequence of that is that, if the flight time of the bullet gets significantly long, the bullet can have an apparent drift from its intended target. The amount [of apparent drift] is very small — it depends on your latitude and azimuth of fire on the planet.”
Coriolis is a very subtle effect. With typical bullet BCs and velocities, you must get to at least 1000 yards before Coriolis amounts to even one click. Accordingly, Bryan advises: “Coriolis Effect is NOT something to think about on moving targets, it is NOT something to think about in high, uncertain wind environments because there are variables that are dominating your uncertainty picture, and the Coriolis will distract you more than the correction is worth.”
“Where you could think about Coriolis, and have it be a major impact on your hit percentage, is if you are shooting at extended range, at relatively small targets, in low-wind conditions. Where you know your muzzle velocity and BC very well, [and there are] pristine conditions, that’s where you’re going to see Coriolis creep in. You’ll receive more refinement and accuracy in your ballistics solutions if you account for Coriolis on those types of shots. But in most practical long-range shooting situations, Coriolis is NOT important. What IS important is to understand is when you should think about it and when you shouldn’t, i.e. when applying it will matter and when it won’t.”
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Magnified 8X view looking down-range at buffalo target.
Could You Hit a Steel Buffalo at 2240 Yards (1.27 miles) … with Iron Sights?
Impossible as that may seem, that’s exactly what Ernie Jimenez did some years back at the North Springs Shooting Range in Price, Utah (elevation 5,627′). Shooting a milsurp Swiss K31 rifle chambered for the 7.5×55 Swiss round, Jimenez placed four hits on a three-foot-high, bison-shaped steel target placed a staggering 2240 yards from the firing line. Not bad for a rifle which Jimenez acquired many years ago for just $99.00. Of course he did have plenty of misses along the way (and Ernie even managed to hit the plate shielding his camera).
This video is set to start half-way through, when the shooter starts making hits:
The whole process was recorded on video and posted on YouTube. The Long-Range Shooters of Utah say this is an official Guinness World Record for longest shot with iron sights. We can’t confirm that, but it still is an impressive feat. Jimenez had to compensate for a huge amount of bullet drop. His K31’s long-range military sights helped but he still had to aim well over the pink bison. To see how far that target is, watch the video at 14:30 — a camera at the firing line zooms all the way back until the bison is nothing but a tiny dot. The photo below show the target at 8X magnification, but it’s still barely visible.
Here’s the unmagnified, “naked-eye” view from the firing line. Can you see a pink buffalo at all?
Bullet Dropped Over 400 Feet along its Trajectory
To roughly gauge the bullet drop, we took a 7.5x55mm Swiss load from the Hodgdon Reloading Center. With max “book” load of H4350, a 168gr Sierra HPBT has a muzzle velocity of 2524 FPS. According to JBM Ballistics, that bullet will drop over 400 feet during its flight. That’s lot of hold-over! Assuming a 100-yard zero, 59° temp, and 5,600′ altitude, JBM calculates that the drop to 2250 yards is a stunning 210.9 MOA — that’s 4969.9 inches, or 414.15 feet!
In the first part of the video, shooter Ernie Jimenez talks about his hand-loads and his K31 rifle. Here is an example of the distinctive straight-pull K31 (Karabiner Model 1931). Image courtesy AIM Surplus.
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