This 50 Cal Days of Christmas video features some fantastic slow-motion footage of a Barrett .50 Caliber M82. This bad boy pumps out some serious muzzle flash. Watch carefully at the 1:05 mark and you can see the .50-caliber projectile exit the muzzle brake and spin through the ball of smoke and flame. For best viewing, you may want to change your video settings to 720p or 1080p High Definition and view full-screen (using the video controls).
The video carries “overkill” to the max, as the shooter uses his big Barrett to blast Christmas ornaments and a snow-globe. To top things off, at the 2:50 mark, the shooter fires the .50 cal at a pyro-equipped gingerbread house. (The gingerbread shot is taken from a standing hold no less!) The results (at 3:22) are impressive — gingerbread house becomes flaming gingerbread pudding.
Share the post ".50-Caliber Christmas — Busting Xmas Ornaments with a Barrett"
Tonight (12/7/2016), Shooting USA television features the Remington Bicentennial — celebrating 200 years of continuous production by one of America’s most legendary companies. The history of Remington Arms is a remarkable story. No large American enterprise — not Ford, not General Motors — can match the 200-year continuous history of Remington. The Remington enterprise is nearly as old as the United States. This story began in 1816, when a young man, Eliphalet Remington II, wanted a rifle…
According to historians, Eliphalet told his father he wanted a gun, so his father told him to build one himself (Eliphalet had been trained as a blacksmith). And so, in 1816, Eliphalet did just that, with the help of a hired gunsmith to bore and rifle his barrel. Eliphalet then took the finished flintlock to a local shooting match. “And his gun shot well,” says Remington Historian Richard Shepler. “So neighbors and friends asked, ‘Could you make me a barrel?’ Over time there was more and more demand.”
By 1828, Eliphalet moved into a factory in Illion, New York. In 1845, he jumped at the opportunity to secure the first of many government contracts. When the Civil War broke out, Remington stayed busy producing firearms. While later in the 1890s during peacetime, Remington manufactured cash registers, sewing machines, knives and even the first successful typewriter.
Whether fulfilling government contracts during wartime, or manufacturing cash registers and sewing machines during peacetime, Remington’s story continues today, arming sportsmen, hunters and armies around the world.
Shooting USA AIR TIMES BY TIME ZONE
Eastern Time: 9:00 PM, 12:30 AM (Wed); 4:00 AM (Thur)
Central Time: 8:00 PM, 11:30 PM (Wed); 3:00 AM (Thur)
Mountain Time: 7:00 PM, 10:30 PM (Wed); 2:00 AM (Thur)
Pacific Time: 6:00 PM, 9:30 PM (Wed); 1:00 AM (Thur)
Share the post "Remington Bicentennial Featured on Shooting USA TV Tonight"
Cerakote is an advanced, highly durable, heat-cured coating that offers excellent corrosion resistance when applied to firearms. Cerakote can be applied to both metals and plastics, and many top firearms manufacturers (and custom gun builders) now offer Cerakote finishes as an option on their shotguns, hunting rifles, and tactical arms.
While Cerakote is not difficult to use, application of Cerakote is not just a simple “spray and bake” process. Best results are achieved when firearms are carefully degreased and surface-prepped prior to application. The video below, produced by NIC Industries, the manufacturer of Cerakote, shows the application process from start to finish. If you watch the video you’ll learn the importance of careful, step-by-step product prep. Metals should be surface-blasted prior to coating, and curing times need to be adjusted to the material type (polymer vs. fiberglass vs. metal). Cerakote is offered in a wide variety of colors. Multi-color finishes, including camouflage, can be applied by a skilled operator.
The video above shows a professional technician applying Cerakote finish to rifles and pistols. All gunsmiths who plan to offer Cerokote finishes should definitely watch this video. NOTE: Cerakote Firearms Coatings are designed for professionals and should be applied by an NIC-trained application specialist or a coating professional with proper training and equipment. NIC Industries stresses that “it is critical to follow all these instructions”.
Story tip by EdLongrange. We welcome reader submissions.
Share the post "Cerakote Gun Finishing — From Start to Finish"
Rimfire shooting is one of the fastest-growing firearm sports in the USA. One of the most important rimfire events of 2016 was the NSSF Rimfire Challenge World Championship held October 14-16 at the Cavern Cove rimfire facility in Woodville, Alabama (near Huntsville). Hundreds of shooters of all ages attended this fun event.
Families Enjoy Rimfire Fun at the NSSF Rimfire Challenge
At the 2016 NSSF Rimfire Challenge Championship in Alabama, Smith & Wesson was on hand with demo rifles and pistols. See the action in the S&W-produced video above. Competitive shooting is one activity in which entire families, both oldsters and youngsters, can come together in a supervised setting to enjoy the spirit and camaraderie of competition. At the October event, attendees were able to try out the Smith & Wesson® SW22 Victory pistol and the M&P 15-22 rifle.
In this video, our friend Julie Golob explains the features of Smith & Wesson’s AR-style M&P 15-22 rifle. We’ve shot the semi-auto M&P 15-22 and it’is a ton of fun. It offers familiar AR15-type ergonomics and balance, with excellent reliability, and the inherently low recoil of the .22 LR rimfire cartridge. All that combines for affordable fun for the whole family.
Share the post "NSSF Rimfire Challenge World Championship in Alabama"
This video from the U.S. Army Marksmanship Unit focuses on two key fundamentals of marksmanship: 1) Sight Alignment; and 2) Trigger Squeeze. This video can assist any Service Rifle or metallic sights shooter. The USAMU instructor explains: “You’ve probably heard a lot about fundamentals — Breathe, Relax, Aim, Squeeze… Well that gives a shooter a lot to think about. Here we teach two main firing tasks: 1) align the sights, and 2) squeeze the trigger without moving the rifle. This allows the shooter a much more simplified format.”
The following tips are transcribed from the video:
Task One: Sight Alignment
Sight alignment is the process of putting the tip of the front sight post, the rear aperture, and the shooter’s eyeball all on the same plane. It’s very important to maintain the tip of the front sight post centered in the rear aperture. Just .002″ of deviation can cause a miss at 300 meters. Allow your eye to do its job. While firing, the focus should remain on the tip of the front sight.
Task Two: Trigger Control
Your second firing task is [to] fire the rifle without moving it. This is done through proper trigger control. You’ve probably heard a lot of words about trigger control — “surprise break”, “snatch”, “pull”, “squeeze”… well we teach one thing here: “smooth”. No matter the speed at which I engage the trigger, it’s always going to be smooth. Imagine trying to pull the trigger straight through the rear of the buttstock, holding it to the rear while the gun recoils. It’s important to constantly engage the trigger, never letting your trigger finger disengage from the trigger while firing. This is achieved through natural trigger finger placement.
Share the post "Fundamentals — Sight Alignment and Trigger Control"
Do you enjoy shooting pistols for sport, or perhaps you carry a handgun for self-defense? If you’re like most of us, you might benefit from a “refresher course” on the fundamentals of handgun shooting. The NRA has created a useful Infographic that covers important basics of handgun marksmanship — key things such as Sight Alignment and Trigger Control. Here are the first two (2) lessons. Click the link below to see all SIX (6) training topics: Sight Alignment, Sight Focus, Trigger Control, Breath Control, Hold Control, and Follow-Through.
Video Shows Sight Alignment, Grip, Stance, Trigger Control and More
In this USAMU video, SGT Shane Coley talks about the basics of sight alignment and trigger control. But then SGT Coley talks about other important control factors such as grip, arm position, and body stance. For rapid-fire shooting, you need to have a good arm and body positioning to control recoil and get back on target quickly. This video is a valuable complement to the NRA Infographic because it demonstrates all the important pistol fundamentals during live fire, at the range.
Share the post "Pistol Fundamentals Explained — Infographic and Video"
As a holiday treat for our readers, we are reprising a video feature about hunting in Norway. After watching this video, you may want to head off to Vesterålen in northern Norway…
This is one of the finest shooting videos we’ve ever seen. Set in the scenic Vesterålen archipelago of northern Norway, this high-quality 15-minute video is part Nat Geo travelog, part ballistics lesson, part gear review. We wish we had the opportunity to join Ulf Lindroth and Thomas Haugland on their remarkable shooting adventure. This video was originally created for Great Britain’s Fieldsports TV Channel.
This is an outstanding video, recommended for anyone interested in long-range hunting.
Long range shooters Lindroth and Haugland traveled to the Arctic Circle to field test a new .338 LM Blaser R8 (in GRS stock) fitted with a Zeiss Victory V8 4.8-35x60mm scope. (Ammo is Norma-brand .338 Lapua Magnum). The video shows how they confirm the ballistics of the Norma factory ammo in the Blaser R8 rifle system.
Ulf and Thomas initially test out the system confirming drop at multiple yardages, and then use the rifle for practical accuracy. Ulf says: “If you know your hunting will demand a long shot, and you want to push the limit but still be sure to make the first-shot kill… If you want to do an ethical hunt, if you want to push that limit, you have to do [this kind of testing].”
Ulf Lindroth (above) observed: “We shot [at 808 meters] observed the misses, clicked our way into the target, and now we have the true drop at that distance… in this air pressure, in this temperature. From there we can start working to find our TRUE trajectory. And when we have THAT… we can get serious about some target shooting.”
Share the post "Norway Adventure with .338 Lapua Magnum"
How is a modern, metal-chassis rifle built? This very cool video from Masterpiece Arms answers that question. The nicely-edited video shows the creation of a Masterpiece Arms tactical rifle from start to finish. All aspects of the manufacturing process are illustrated: 3D CAD modeling, CNC milling of the chassis, barrel threading/contouring, chamber-reaming, barrel lapping, laser engraving, and stock coating. If you love to see machines at work, you will enjoy this video…
Share the post "Genesis of a Tactical Rifle — The Process of Creation"
In this article, three great champions reveal their wind-calling secrets in video interviews. We first published this “Three Champions” story a few years ago. If you are a competitive shooter, and you want to learn more about reading the wind, you should watch all three of these interviews. These guys are among the best shooters to ever shoulder a rifle, and they have much wisdom to share.
At the 2010 SHOT Show, we had the unique opportunity to corner three “superstars” of High Power shooting, and solicit their wind-reading secrets. In the three videos below (in alphabetical order), Carl Bernosky (10-Time Nat’l High Power Champion), David Tubb (11-time Nat’l High Power Champion and 7-time Nat’l Long-Range Champion), and John Whidden (4-Time Nat’l High Power Long-Range Champion) shared some of the wind-doping strategies that have carried them to victory in the nation’s most competitive shooting matches. This is GOLD folks… no matter what your discipline — be it short-range Benchrest or Long-Range High Power — watch these videos for valuable insights that can help you shoot more accurately, and post higher scores, in all wind conditions.
We were very fortunate to have these three extraordinarily gifted champions reveal their “winning ways”. These guys REALLY know their stuff. I thought to myself: “Wow, this is how a baseball fan might feel if he could assemble Babe Ruth, Hank Aaron, and Ted Williams in the same room, and have them each reveal their hitting secrets.” Editor’s Note: These interviews were conducted before Bernosky and Tubb won their most recent National Championships so the introductions may list a lower number of titles won.
Top photo courtesy Rifleman’s Journal.
Share the post "Three Champs — Bernosky, Tubb, Whidden — Talk Wind Reading"
This helpful video from our friend Kirsten Joy Weiss explains how to avoid “scope bite”. This can occur when the scope, on recoil, moves back to contact your forehead, brow, or eye socket area. That’s not fun. While common sense tells us to avoid “scope bite” — sooner or later this happens to most shooters. One viewer noted: “I have come close. I had a Win Model 70 in .375 H & H Mag and I was shooting over a large rock in a strange position. The scope hit my eye glasses hard enough to bend the wire frames and cause a little pain on the bridge of the nose from the nose piece. [That] made a believer out of me.”
Kirsten offers a good basic principle — she suggests that you mount your rifle-scope so that the ocular (eyepiece) of the scope is positioned at least three inches or more from your eyeball when you hold the rifle in your normal shooting position. From a technical standpoint, optical eye relief is a property of the scope, so you want to purchase an optic that offers sufficient optical eye relief (meaning that it allows you to see the full circle of light with your head at least three inches from the eyepiece). Then you need to position the optic optimally for your head/eye position when shooting the rifle — with at least three inches of eyeball-to-scope separation (i.e. physical eye relief).
NOTE: You should mount the scope to provide adequate eyeball-to-scope separation for the actual position(s) you will be shooting most of the time. For an F-TR rig, this will be prone. For a hunting rifle, your most common position could be sitting or standing. Your head position will vary based on the position. You can’t assume the scope placement is correct just because it seems OK when you are testing or zeroing the gun from the bench. When shooting from a prone or kneeling position you may find your eye considerably closer to the eyepiece.
Share the post "How to Avoid ‘Scope Bite’ (Scope Placement Tips)"
Trimming and chamfering brass are tasks hand-loaders grow to hate. Those chores are time-consuming and tiresome. Thankfully there are faster, better alternatives to manual trimming/chamfering. In this article, Forum member Erik Cortina shows how to use the Giraud tool which trims and chamfers in one operation. Erik has his own YouTube Channel dedicated to precision reloading and accurizing. Here we feature Erik’s video about the “mother of all brass trimmers”, the Giraud powered case trimmer. Erik says: “If you do volume reloading… this is the only trimmer to get. It not only trims to length but it also chamfers your case mouth inside and out.” In his video, Erik offers some very clever and useful tips that will help you get the most from your Giraud.
This is a manufacturer’s photo showing an older model.
The Giraud trimmer is very precise. When set up correctly, it can trim brass with amazing consistency. In the video, Erik trims five pieces of brass in 15 seconds (6:32 mark). He then measures all five with precision calipers (7:00-8:08). All lengths are exact within .0005 (half a thousandth). Erik notes that the Giraud trimmer indexes off the case shoulder. As long as you have fire-formed brass with consistent base-to-shoulder dimensions, you should get very consistent trim lengths.
The secret to the system is a 3-way cutting head. This cutter can be swapped in and out in a couple minutes with wrenches provided with the kit. Erik has three different heads; one each for 6.5mm, 7mm, and .30 caliber. The video shows how to adjust the cutting heads to match caliber diameter (and to get the desired amount of inside/outside chamfer).
To trim and chamfer cases, you simply insert them nose-first into the cartridge-specific case-holder. Erik offers a smart tip — He uses a die locking ring to position the cartridge holder (3:15). This can be locked in place. Erik says die locking rings work much better than the hex-nuts provided by Giraud (with the hex-nut, one must re-set cut length each time you change case-holders.)
The Giraud can be used in either horizontal or vertical modes. Erik prefers to have the trimmer aligned vertically, allowing him to push cases down on the trimmer head. But the trimming unit has twin sets of rubber feet, allowing horizontal or vertical orientation.
Improved Case-Holder Made with Chamber Reamer:
For his .284 Shehane, Erik had to create his own case-holder (Giraud does not make one for that wildcat cartridge). Erik used his chamber reamer. To his surprise, Erik found that the brass was easier to trim in the custom case holder (compared to the Giraud-made spring-loaded holders). With a perfect fit, trimming and case extraction went more smoothly and the process was easier on his hands. (See 9:00-10:00). Based on Erik’s experience, you may want to create your own custom case-holder.
Trim Bullet Meplats Also
With a special bullet-holder fitting and meplat cutter head, the Giraud power trimmer can be used to trim bullet meplats. Trimming meplats can help make the Ballistic Coefficents of a batch of bullets more consistent. Uniforming meplats is also often done as a first step in the process of “tipping” bullets to improve BC.
Share the post "Cortina’s Corner: Using the Giraud Power Trimmer"
Here’s one of the most popular videos from the Daily Bulletin archives. If you’ve ever wondered how a top-flight, custom rifle is built, watch carefully….
This video, produced for the folks at S&S Precision in Denton, Texas, shows a full custom 6.5×47 bench rifle being crafted from start to finish. It is a fantastic video, one of the best precision rifles video you’ll find on YouTube. It shows every aspect of the job — action bedding, chambering, barrel-fitting, muzzle crowning, and stock finishing.
You’ll be amazed at the paint job on this rig — complete with flames and four playing cards: the 6, 5, 4, and 7 of spades. Everyone should take the time to watch this 13-minute video from start to finish, particularly if you are interested in stock painting or precision gunsmithing. And the video has a “happy ending”. This custom 6.5×47 proves to be a real tack-driver, shooting a 0.274″ three-shot group at 400 yards to win “small group” in its first fun match. NOTE: If you have a fast internet connection, we recommend you watch this video in 720p HD.
We’re told that the founder of S&S Precision, the inimitable “Stick” Starks, is retiring from full-time gunsmithing duties. This video is a nice tribute to Stick’s dedication to his craft for so many decades.
Share the post "Great Video Shows Custom 6.5×47 Lapua Rifle Build by S&S"
In this video, Anette Wachter (the 30CalGal) offers tips for shooting from bipod.
Our friend Anette Wachter, aka “30CalGal”, stars in a smart video from NRAWomen.TV. In this episode of Tips & Tactics, Anette talks about the “mental game” in competition. Specifically she explains how to “visualize success”:
I have found that a lot of my success in competition has come through what I call a ‘mental rehearsal’. I actually visualize every stage of the match and I visualize the success of the match and winning the match.
I actually visualize that round going downrange into the target, and the target coming up with a dead-center ‘X’. I visualize this over and over. If you visualize success you will achieve success.
Visualization is a process of mental preparation that is done before you get to the range. Many of the greatest shooting champions have used this technique to get ready for big matches, and to optimize their performance during record fire. If you want to enhance your “mental game” through pre-match visualization, we strongly recommend Lanny Bassham’s book, With Winning in Mind.
As a competitive smallbore 3P shooter, Bassham developed a mental management system. Using this system, Lanny Bassham won 22 world individual and team titles, set four world records, and captured an Olympic Gold Medal in Montreal in 1976. His techniques have been embraced by professional and Olympic athletes in many sports. With Winning in Mind covers a complete system of “mental management” techniques used by Olympians and elite champions.
About 30CalGal Life is short. Go Shoot! — Anette Wachter
Along with being a talented competitive shooter, Anette has her own Gun Blog, 30CalGal.com, and she writes for several gun publications including GunUp Magazine, Shooting Sports USA, Sure Shots Magazine, and Wide Open Spaces. She also designs and crafts custom jewelry items, sold through her AW Collections webstore.
Share the post "Competition Tips: 30CalGal Talks about ‘The Mental Game’"
Commonly, hunters won’t have the ability to fire one or two fouling shots before heading out on a hunt. Therefore it’s important that a hunter understands how his rifle shoots with a “cold bore shot”. Both the point of impact (and possibly velocity), may be different with a cold bore than with a barrel that has been warmed and fouled with a series of shots. In this video from the U.S. Army Marksmanship Unit (USAMU), you’ll learn how to determine your cold bore point of impact (POI) for a rifle that just been cleaned, as well as the cold bore POI with a barrel that has already been “fouled in”.
SGT Joe Hein of the USAMU shows how to plot cold bore POI with both a clean bore and a fouled bore. Note that the “cold bore” shot from a fouled barrel was closer to the follow-up shots than the cold bore shot from a clean barrel. This is typical of many factory barrels. SGT Hein provides a simple way to understand your rifle’s cold bore performance. Hein’s advice can keep you from missing that long range shot at that big buck on opening day. A little time spent on the range before that critical first shot will help ensure you have meat in the freezer this season.
Share the post "Hunting Tip: How to Plot Your Cold Bore Point of Impact"
Sinclair International has a helpful, three-part video series on Full-Length Sizing. The full-length sizing die performs multiple important functions: it resizes the case body, resizes the neck, and adjusts the headspace relative to the chamber (it can also eject the spent primer if that was not done previously).
While neck-sizing-only can work with moderate loads (for a couple firings), after repeated firings the case can stretch, becoming too tight to chamber easily. If you shoot cases with high-pressure, near-max loads, you will probably benefit from full-length sizing your cases each reloading cycle. When full-length sizing, you will want to move the shoulder back (i.e. “bump” the shoulder) to provide proper clearance in the chamber. A case that has grown too much will exhibit stiff bolt lift after firing and be hard to chamber if it is not FL-sized during the reloading process.
Sinclair recommends bumping cases .001-.002″ (one to two thousandths) for cases used in bolt-action target-shooting rifles, or .003-.005″ (three to five thousandths) for hunting rifles or semi-auto rifles. To move the shoulder back you screw the FL-sizing die downwards in the press once you’ve determined “just touching” on the shoulder. You don’t have to screw the die down very far! With a normal 14-pitch die, 1/8th turn (45° rotation) yields approximately 0.009″ of downward movement. So it doesn’t take much to add a few thousandths of bump.
Case Sizing Part One — Why We Full-Length Resize
Case Sizing Part Two — How to Set Up Your Sizing Die
Case Sizing Part Three — How to Use a Bump Gauge
NOTE: These FLASH videos may not display on some mobile devices.
Share the post "How to Set Up Full-Length Sizing Dies and Control Shoulder Bump"
The NRA (with help from Smith & Wesson) has created a compelling video explaining how and why women use firearms for hunting, sport, and self-defense.
The video features many of our friends, including pistol champion Julie Golob and ace 3-Gun competitor Maggie Reese. The video spotlights women who value their Second Amendment rights, understanding that a firearm remains the “great equalizer”, allowing women to protect themselves and their families. The video challenges the anti-gun politicians and media “talking heads” who want to disarm women: “These authorities that I’ve never met, they’ll never know me, they’ll never know my circumstances, they’ll never know what I’m up against”, says Natalie Foster.
“So many things can change when we start losing our civil rights, and our most basic civil rights of self-defense.” — Julianna Crowder.
“I want to protect my child in any way that’s possible. And I want them to have that right to protect… our future. It’s not just about Washington… it’s about sharing your sport, sharing your passion, sharing your desire to protect yourself.” — Julie Golob
Share the post "NRA Video Focuses on Women’s Firearms Rights"
Take a close look at these illustrations which show the key differences between the four main powder types: extruded (stick) powder, ball (spherical) powder, flattened ball powder, and flake powder.
Burn Rate Basics
Widener’s Guide to Smokeless Powders also has a useful discussion of Burn Rate (a confusing topic for many hand-loaders). Wideners explains: “While a gun powder explosion in the cartridge seems instantaneous, if you slow it down you will actually find that each powder has a different ‘burn rate’, or speed at which it ignites.” This video shows powders with two very different burn rates. Watch closely.
Different burn rates suit different cartridge types notes Widener’s: “In general a fast-burning powder is used for light bullets and low-speed pistols and shotguns. Medium-rate powders are used for magnum pistols, while high-velocity, large bore rifle cartridges will need slow powders[.]
It should be noted that burn rate does not have a standardized unit of measurement. In fact, burn rate is really only discussed in comparison to other powders; there is no universal yardstick. Specifics will change by cartridge and bullet types[.]”
Share the post "Widener’s Guide to Smokeless Powders"
Gearlocker.nz, a New Zealand outdoor sports website, recently interviewed our friends Ed and Steve, aka the “6.5 Guys”. In this Gearlocker Video Interview, Ed and Steve cover many topics including Precision Rifle Series matches, gear selection, and effective hand-loading techniques. Kerry, the creator of Gearlocker.nz, writes: “The 6.5 Guys are Steve and Ed, two guys who decided to start documenting their progress in long-range practical precision shooting. They have built a dedicated following on YouTube and Facebook. Consistently putting out high-quality content [covering] their equipment choices and use, the 6.5 Guys have created a fantastic resource for anyone involved in shooting.”
Who are the 6.5 Guys? They are Steve (left) and Ed (right), a pair of avid shooters based in the Pacific Northwest. They have released dozens of helpful videos on the 6.5 Guys YouTube Channel.
You can check out the 6.5 Guys’ website at www.65Guys.com. Below is a sample from one of the 6.5 Guys’ best articles — Five Tips on getting started in practical/tactical matches.
We often meet people who are new to long range precision shooting, and want to improve their knowledge and skill level. However, they aren’t sure if they are ready to sign up to compete in a match. They often ask, “What knowledge or skills [and gear] are necessary to compete in a match?”
TIP ONE: Make Plans and Commit to Go
First you need to start by finding a match to attend. We recommend starting with any match that may be within a reasonable driving distance. This may likely be a local “club” match, many of which are held on a regular basis. Once you decide on the match you want to attend, do your homework. This means finding out if you need to pre-register or pre-pay the match fee. Commit to going by registering for the match and putting it on your schedule.
The Coriolis Effect comes into play with extreme long-range shots like this (2100 yards at Raton, NM). 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 has produced a short video that explains the Coriolis Effect. 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.”
The Coriolis Effect — General Physics
The Coriolis Effect is the apparent deflection of moving objects when the motion is described relative to a rotating reference frame. The Coriolis force acts in a direction perpendicular to the rotation axis and to the velocity of the body in the rotating frame and is proportional to the object’s speed in the rotating frame.
A commonly encountered rotating reference frame is the Earth. The Coriolis effect is caused by the rotation of the Earth and the inertia of the mass experiencing the effect. Because the Earth completes only one rotation per day, the Coriolis force is quite small, and its effects generally become noticeable only for motions occurring over large distances and long periods of time. This force causes moving objects on the surface of the Earth to be deflected to the right (with respect to the direction of travel) in the Northern Hemisphere and to the left in the Southern Hemisphere. The horizontal deflection effect is greater near the poles and smallest at the equator, since the rate of change in the diameter of the circles of latitude when travelling north or south, increases the closer the object is to the poles. (Source: Wikipedia)
Share the post "Extreme Long Range: Understanding the Coriolis Effect"
This important video shows what really happens when loaded ammunition burns. You will probably be surprised. Contrary to Hollywood notions, the ammo doesn’t ignite in a massive explosion. Far from it… basically the rounds “cook off” one by one, and the bullets release at relatively low velocity. We’ve featured this SAAMI research project before, but it is worth reprising for those who have not yet seen the burn tests.
A couple years back, SAAMI released an important video concerning ammo and fire. With professional fire-fighters standing by, over 400,000 rounds of ammo were incinerated in a series of eye-opening tests. If you haven’t had the chance to view this video yet, you should take the time to watch it now
The Sporting Arms and Ammunition Manufacturers’ Institute (SAAMI) has produced an amazing 25-minute video that shows what actually happens to sporting ammunition involved in a fire. This video shows the results of serious tests conducted with the assistance of professional fire crews. We strongly recommend you watch this video, all the way through. It dispels many myths, while demonstrating what really happens when ammunition is burned, dropped, or crushed.
Watch SAAMI Ammunition Testing Video
2:10 Impact Test (ignited outside firearm)
3:40 65-foot Drop Test
5:08 Bullet Impact (.308 Win firing)
7:55 Blasting Cap Attacks
9:55 Bulldozer and Forklift Tests
12:20 Boxed Ammo Bonfire
15:37 Bonfire without Packaging
17:21 Retail Store Simulation Burn
20:55 Truck Trailer Burn
Over 400,000 rounds of ammunition were used in the tests. Some of the footage is quite remarkable. Testers built a bonfire with 28,000 rounds of boxed ammo soaked in diesel fuel. Then the testers loaded five pallets of ammo (250,000 rounds) in the back of a semi-truck, and torched it all using wood and paper fire-starting materials doused with diesel fuel.
The video shows that, when ammo boxes are set on fire, and ammunition does discharge, the bullet normally exits at low speed and low pressure. SAAMI states: “Smokeless powders must be confined to propel a projectile at high velocity. When not in a firearm, projectile velocities are extremely low.” At distances of 10 meters, bullets launched from “cooked-off” ammo would not penetrate the normal “turn-out gear” worn by fire-fighters.
We are not suggesting you disregard the risks of ammo “cooking off” in a fire, but you will learn the realities of the situation by watching the video. There are some amazing demonstrations — including a simulated retail store fire with 115,000 rounds of ammo in boxes. As cartridges cook off, it sounds like a battery of machine-guns, but projectiles did not penetrate the “store” walls, or even two layers of sheet-rock. The fire crew puts out the “store fire” easily in under 20 seconds, just using water.
Additional Testing: Drop Test, Projectile Test, Crush Test, Blasting Cap Test
The video also offers interesting ammo-handling tests. Boxes of ammo were dropped from a height of 65 feet. Only a tiny fraction of the cartridges discharged, and there was no chain-fire. SAAMI concludes: “When dropped from extreme heights (65 feet), sporting ammunition is unlikely to ignite. If a cartridge ignites, it does not propagate.”
Rifle Fire Test
SAAMI’s testers even tried to blow up boxes of ammunition with rifle fire. Boxes of loaded ammo were shot with .308 Win rounds from 65 yards. The video includes fascinating slow-motion footage showing rounds penetrating boxes of rifle cartridges, pistol ammo, and shotgun shells. Individual cartridges that were penetrated were destroyed, but adjacent cartridges suffered little damage, other than some powder leakage. SAAMI observed: “Most of the ammunition did not ignite. When a cartridge did ignite, there was no chain reaction.”
Bulldozer Crush Test
The test team also did an amazing “crush-test” using a Bulldozer. First boxes of loaded ammo, then loose piles of ammo, were crushed under the treads of a Bulldozer. A handful of rounds fired off, but again there was no chain-fire, and no large explosion. SAAMI observed: “Even in the most extreme conditions of compression and friction, sporting ammunition is unlikely to ignite. [If it does ignite when crushed] it does not propagate.”
Blasting Cap Test
Perhaps most amazingly, the testers were not able to get ammunition to chain-fire (detonate all at once), even when using blasting caps affixed directly to live primers. In the SAAMI test, a blasting cap was placed on the primer of a round housed in a large box of ammo. One cartridge ignited but the rest of the boxed ammo was relatively undamaged and there was no propagation.
Share the post "Burn Baby Burn — The Great SAAMI Ammo FIRE TEST"