For today’s Sunday Gunday Feature, we provide a selection of videos showcasing rifle and pistol cartridge types — from tiny .17 caliber cases to 30mm cases (and a few even bigger rounds). Two of the videos use advance computer animation to provide 3D views of dozens of cartridge types. Then there are some expert commentaries by Jerry Miculek and Ron Spomer discussing the characteristics and performance of various cartridge types. Finally, we provide two videos that discuss rimfire cartridges and show how .22 LR rounds are produced in a modern CCI factory.
90 Different Rifle Cartridge Types in Computer Animation
In this rifle ammunition comparison animation there are 90 different cartridge types, from very small (.22 Flobert) to very, very big (20mm Vulcan). This video employs sophisticated, 3D CAD animation to showcase 90 different rifle cartridges, one after the other, in sequence. It covers from .17 Caliber up to 20mm. Obviously a lot of time and effort went into this video, but it really is cool to see so many different cartridge types in one 3.5-minute video.
After the full line-up is complete at 1:41, the video then provides other smaller comparison, such as multiple large hunting cartridges (2:15) and .22 Caliber cartridges (2:45, see above). All the cartridge models are made using Autodesk Inventor software, and then the “line-up” animation was completed with Autodesk Showcase.
Cartridge Types Included (in Caliber Order, then Metric Order):
1) .17 HM2
2) .17 HMR
3) .204 Ruger
4) .218 Bee
5) .22 Flobert
6) .22 Hornet
7) .22 LR
8) .22 Magnum
9) .22 PPC
10) .22 Short
11) .220 Jaybird
12) .223 Rem/5.56x45mm
13) .223 WSSM
14) .224 Weatherby Magnum
15) .225 Winchester
16) .240 Weatherby Magnum
17) .243 Winchester
18) .25 Remington Auto
19) .250 Savage
20) .25-06 Remington
21) .256 Winchester Magnum
22) .257 Roberts
23) .260 Remington
24) .264 Winchester Magnum
25) .270 Weatherby Magnum
26) .270 Winchester
27) .280 British
28) .280 Remington
29) .284 Winchester
30) .30 Carbine
31) .300 H&H Magnum
32) .300 Rem Ultra Magnum
33) .300 Savage
34) .300 Winchester Magnum
35) .300 Win Short Mag (WSM)
36) .30-06 Springfield
37) .303 British
38) .30-30
39) .308 Norma Magnum
40) .308 Winchester
41) .32 Winchester Special
42) .325 WSM
43) .338 Lapua Magnum
44) .35 Whelen
45) .350 Remington Magnum
46) .375 H&H Magnum
47) .376 Steyr
48) .408 Cheyenne
49) .416 Remington Magnum
50) .416 Weatherby Magnum
51) .444 Marlin
52) .450 Marlin
53) .450 Nitro Express
54) .458 Win Magnum
55) .45×70
56) .460 Weatherby Magnum
57) .465 H&H Magnum
58) .470 Nitro Express
59) .50 BMG / 12.7×99 NATO
60) .500 jeffery
61) .505 Gibbs
62) .577 Nitro Express
63) .577 Tyrannosaur
64) .600 Nitro Express
65) .700 Nitro Express
66) .950 JDJ
67) 4.6×30 mm
68) 4.6x30mm
69) 5.6×50 Magnum
70) 5.7x28mm
71) 5mm/SMc
72) 6mm LEE
73) 6.5×55 Swedish
74) 6.5×6 mm Schuler
75) 6.8mm Remington SPC
76) 6mm PPC
77) 6×45 mm
78) 7mm Weatherby Magnum
79) 7mm Remington Magnum
80) 7mm Rem Ultra Magnum
81) 7.62×39 mm FMJ
82) 7.7×58 Arisaka
83) 7.95×57 Mauser
84) 8mm Remington Magnum
85) 9.3x62mm
86) 9.3×64 Brenneke
87) 14.5x114mm
88) 20mm Vulcan
89) 25mmx137mm
90) 30mmx173mm
Ammunition Size Line-Up — from Tiny to Massive
This animation video shows the size comparison of ammunition from a 2.34mm rimfire caliber to the massive 800mm caliber shell of the Schwerer Gustav railway cannon used by German forces in World War II. This video includes many common rifle and pistol cartridges/calibers, but also includes large artillery ammunition. This video has very good CGI Graphics. Below is part of the line-up from the .17 Remington Fireball (far left) to the famed .50 BMG (far right):
Ammunition Types Showcased in this video:
2.34mm rimfire
2.7mm Kolibri
3mm Kolibri
4.25 mm Liliput
.17 Hornady Mach 2
.17 Remington Fireball
.17 Hornady Magnum Rimfire
.22 Long Rifle
.22 Winchester Magnum Rimfire
HK 4.6×30mm
4.6×36 Loffelspitz
5.45mmx18 MPTs
5.7×28mm SS190
.280 British 7×43
.297/230 Morris Short
.297/230 Morris Long
.30 Pedersen 7.65×20mm
7.92×33mm Kurz
.300 Winchester Short Magnum
8×50mmR Mannlicher
.499 LWR
.577/450 Martini–Henry
.600 Nitro Express
.470 Nitro Express
.50 Beowulf
.50 BMG
20×102 M55A3
25×137 M793
Popular Cartridges/Calibers for Self-Defense and Hunting
This video focuses on popular calibers/cartridges used for self-defense and hunting. It provides a quick but informative overview of the capabilities (and intended uses) of many types of pistol, rifle, and shotgun ammunition. The video discusses the pros/cons of various cartridge types and explains how you would select ammo for a particular purposes (e.g. skeet loads vs. defense shotshells). If you are considering buying a carry pistol and are undecided about caliber choice, this is a good video to watch.
Flattest-Shooting Cartridges by Caliber (Ron Spomer)
In this 15-minute video, hunting expert Ron Spomer examines a variety of standard and wildcat cartridges from .17 caliber all the way to .338 caliber. For each caliber, Ron picks a flat-shooting “winner” and provides some ballistics comparison tables. This video is quite popular, with over 550,000 views on YouTube.
Ammo Types and Calibers — Jerry Miculek Explains the Basics
In this video, legendary shooter Jerry Miculek talks about popular types of pistol and rifle ammunition and the various bullet options used for plinking, competition, and self-defense. Jerry, one of the greatest pistol shooters on the planet, provides useful insights on cartridge selection and bullet choices. Jerry notes: “There are a TON of different types of ammunition” so he explains the basics. And Jerry answers common questions such as: “What is the difference between ball and hollow-point bullets?” and “What type of gun takes rimmed cartridge versus rimless?”.
.22 Caliber Rimfire Cartridges — Some Key Facts Revealed
We recommend all .22 rimfire shooters watch this video from Old English Outfitters. It explains some important facts and clarifies some common misconceptions about to .22 caliber ammunition. To learn more about modern .22 LR rimfire ammo, we also recommend the video below, which shows how CCI .22 LR ammunition is manufactured, start to finish.
BONUS Video — How .22 LR Ammunition Is Made
YouTube host 22Plinkster toured the CCI/Speer production facility in Lewiston, Idaho. While touring the plant, 22Plinkster was allowed to capture video showing the creation of .22 LR rounds from start to finish. This is a fascinating video, well worth watching.
This revealing video shows all phases of .22 LR ammo production including cupping, drawing, annealing, washing, drying, head-stamping, priming, powder charging, bullet seating, crimping, waxing, inspection, and final packaging. If you’ve got ten minutes to spare, we really recommend you watch the video from start to finish. You’ll definitely learn some new things about rimfire ammo.
The text in this article is Copyright 2023 by AccurateShooter.com. No text shall be republished on any other site without authorization and payment of license fees.
Jessie Harrison is arguably the best female action pistol shooter in history. No other lady has amassed as many championships or set so many speed-shooting records. Over the past two decades Jessie Harrison (who has also competed with with married names Jessie Duff and Jessie Abbate) has earned dozens of major titles including twenty-two U.S. Practical Shooting Association (USPSA) Ladies Championships. Jessie won her 22nd USPSA title at the USPSA Race Gun Nationals in October 22–24, 2021 at the Talledega Marksmanship Park in Alabama.
This Saturday at the Movies feature showcases Jessie Harrison shooting in competition as well as Jessie offering shooting and firearms safety tips. You can see dozens more action pistol videos featuring Jessie on the Jessie Harrison YouTube Channel.
Jessie with Team USA at 2022 IPSC World Shoot
American shooter Jessie Harrison was part of a victorious USA Team and took second in the Ladies Open Division at the IPSC Handgun World Shoot held in November, 2022 in Pattaya, Thailand. The IPSC World Shoot is considered by many to be the most prestigious action pistol competition in the world. “The IPSC Handgun World Championships are our equivalent to the Olympics, the pinnacle of matches,” said Harrison.
Blast From the Past — Young Jessie in Cowboy Action Mode
Early in her shooting career, Jessie enjoyed Cowboy Action Shooting. She honed her skills shooting revolvers and lever guns “on the clock” with steel targets. For this Single Action Shooting Society (SASS) sport, all competitors use an official “alias” at matches. Jessie’s SASS alias was “Jasmine Jessie”. Watch this video from 2009 to see a young Jessie in action with a slick shotgun-loading trick.
Jessie Harrison, Successful Huntress
Jessie also enjoys hunting. Back in 2019, the chance to bag a Muley buck drew action-shooting ace Jessie Harrison out to Wyoming’s Bighorn Mountains region. Jessie, who is probably the best lady action pistol shooter on the planet, had a successful hunt with Big Horn Outfitters. Jessie, Shooting Team Captain for Taurus USA, really enjoyed getting out into the Wyoming wilderness. And she got her buck!
CMP Guide to Target Shooting with Vintage Military Rifles
The Civilian Marksmanship Program (CMP) has released VMR: Target Shooting With Vintage Military Rifles, a detailed book by Gary Anderson, Director of Civilian Marksmanship Emeritus. Gary himself was a world-class marksman who earned two Olympic Gold medals in rifle shooting.
The CMP says this 284-page illustrated book is “likely the most comprehensive manuscript ever written about the methods of training and competing with popular American and foreign vintage military rifles.” Fans of vintage military rifles will likely find this 18-chapter book “to be the most complete coverage of the topic, from a competitor’s and historian’s point of view”, said Christie Sewell, CMP Programs Chief.
Anderson definitely has the credentials — he won Olympic Gold Medals in Tokyo and Mexico City in the 1960s. Gary also set multiple U.S. and international records. The originator of the CMP’s competitive vintage rifle program, Anderson set out to present a detailed manual covering all aspects of shooting vintage military rifles. The book covers 1903 Springfield, U.S. Krag, 1917 U.S. Enfield, M1 Garand, M1 Carbine and many more, including rifles from “across the pond.”
Target Shooting With Vintage Military Rifles Topics:
Origins and Fundamentals of Marksmanship
Operation, Cleaning, Loading & Unloading
Sight Adjustment, Zeroing & Fine Tuning
Highpower Rifle Match Procedures
Firing Rifles in Competition
Prone, Sitting and Standing Position Building
Using a Scorebook/Databook
Strategies for Improvement
Critical Value of the Sling
Rifle and Range Safety
Purchase Online at CMP E-Store
This excellent Gary Anderson book is sold through the CMP E-Store for $29.95. You can also print out and submit the CMP Publications order form (order item NLU # 792, $29.95). The CMP stores in Alabama and Ohio will also carry this Gary Anderson book.
On Wednesdays, the U.S. Army Marksmanship Unit often publishes a reloading “how-to” article on the USAMU Facebook page. One “Handloading Hump Day” post covered bore-cleaning, specifically the use of pull-through style bore-snakes. Visit the USAMU Facebook page each Wednesday for other helpful tips.
Today, we’ll shift from handloading to rifle bore cleaning and maintenance, with information courtesy of the USAMU’s Custom Firearms Shop. We recently had some inquiries about bore cleaning, and this seems a good opportunity to share. After all, even the best handloads won’t yield their full potential in a poorly-cleaned and maintained rifle.
NOTE: Hoppes claims a trademark on the term “BoreSnake” (one word, no hyphen). For this article, the USAMU has used the term in hyphenated form, two words. We believe the USAMU is referring to a Hoppes Brand Boresnake, not a different bore cleaning rope.
BORE-SNAKES: MIRACLE REPLACEMENT FOR THE CLEANING ROD?
The experiences of both our firearms test specialist and this writer have given no evidence that proper use of a clean bore-snake will damage a match barrel. Of course, one does not pull the bore-snake at an angle to the crown when removing it — pull it straight out, parallel to the bore’s direction, to prevent crown wear over time.
Bore-snakes are very useful for some applications (primarily a hasty, interim wipe-down). In [my] experience they cannot replace a thorough cleaning with a proper rod and brushes. While the experiment cited here involves rimfire, it may help illustrate. Several years ago, the writer used his new, personal Anschutz to investigate the bore-snake issue. It had been fired ~350 rds with match ammo and had had 3 typical rod/brush cleanings.
Next, starting with a clean bore, the writer fired 300 more rounds without cleaning in order to build up a “worst-case” fouling condition. Afterwards, the writer examined the bore with a Hawkeye bore scope. There was a uniform, grey film down the entire barrel, with some small, intermittent lead build-up at and just forward of the throat.
Some bore-cleaning rope products feature separate, detachable bronze brush and bore mop segments. This allows more usage options (e.g. mop only), and makes it easier to clean the brush elements:
A new bore-snake was then wet with solvent and pulled through the bore. The Hawkeye revealed that the grey fouling was gone, and much of the visible fouling at the throat was reduced. However, nine more passes with the bore-snake, checking after each with the Hawkeye, revealed no further improvement in cleaning. The writer then cleaned with two wet patches, observed, then one stroke of a new, wet bronze brush, and one wet patch to clean out residue.
The Hawkeye showed a significant reduction in fouling at the throat; it was virtually gone. A second pass with a wet bronze brush and a wet patch removed the remaining fouling. Scrubbing the bore further, checking to see how much fouling was removed, revealed no significant improvement. The reason for this test was to learn what’s needed to get (and keep) this Anschutz clean with minimal cleaning rod use — and thus, minimal risk of bore damage/wear. Leaving fouling in the bore promotes corrosion over time.
Obviously, this applies to a nice, smooth rimfire match barrel, using good, well lubed ammo. It doesn’t apply directly to the use of copper-jacketed bullets, which leave a stubborn fouling all their own. However, it does suggest that while the bore-snake can be helpful and a useful field-expedient, to truly clean a rifle barrel one will still need a good quality rod, bronze brush and solvents. [Editor: Add a good-fitting cleaning rod bore guide.]
SO, WHAT ABOUT BORE SNAKES FOR BARREL BREAK-IN?
The goal of barrel break-in is to fire each shot through a clean barrel, preventing copper buildup and allowing the bullets their best chance at burnishing sharp edges. Thus, it seems this purpose would be best served by one’s usual rods, brushes and rod guides.
The 2023 Berger Southwest Nationals (SWN) will be held in Phoenix on February 15-19, 2023. After National Championships, this is the biggest event of the year for F-Class and Palma shooters. But the winds at the Ben Avery Range in Phoenix can be notoriously unpredictable this time of year. It can be calm and consistent one afternoon, then very breezy and switchy the next.
If you want to succeed at the Berger SWN event, you need to be a good wind-reader. One missed call could mean a 6 instead of a 10 and that can make a difference in final standings. The book featured here will help you improve your wind-reading skills. The Wind Book for Rifle Shooters is definitely a good investment for any serious long-range rifle competitor.
“The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.” — William Arthur Ward
Readers often ask us: “Is there a decent, easy-to-comprehend book that can help my wind-reading?” Many of our Forum members have recommended The Wind Book for Rifle Shooters by Linda Miller and Keith Cunningham.
Updated Edition Released in May 2020
A NEW hardback edition of The Wind Book for Rifle Shooters was released in May 2020. This 144-page book, first published in 2007, is a great resource. But you don’t have to take our word for it. If you click this link, you can read book excerpts and decide for yourself. When the Amazon page opens, click the book cover photo (labeled “Look Inside”) and another screen will appear. This lets you preview chapters from the first edition, and view some illustrations. Along with the new hardback edition ($22.99), Amazon offers a Kindle (eBook) edition for $14.99.
Other books cover wind reading in a broader discussion of ballistics or long-range shooting, such as Applied Ballistics for Long-Range Shooting by Bryan Litz. But the Miller & Cunningham book is ALL about wind reading from cover to cover, and that is its strength. The book focuses on real world skills that can help you accurately gauge wind angle, wind velocity, and wind cycles.
All other factors being equal, it is your ability to read the wind that will make the most difference in your shooting accuracy. The better you understand the behavior of the wind, the better you will understand the behavior of your bullet. — The Wind Book for Rifle Shooters
The Wind Book for Rifle Shooters covers techniques and tactics used by expert wind-readers. There are numerous charts and illustrations. The authors show you how to put together a simple wind-reading “toolbox” for calculating wind speed, direction, deflection and drift. Then they explain how to use these tools to read flags and mirage, record and interpret your observations, and time your shots to compensate for wind.
I believe this is a must-have book if you are a long-range sport shooter. I compete in F-Class Open and when I first purchased this book and read it from cover to cover, it helped me understand wind reading and making accurate scope corrections. Buy this book, read it, put into practice what it tells you, you will not be disappointed. — P. Janzso
If you have one book for wind reading, this should be it. Whether you’re a novice or experienced wind shooter this book has something for you. It covers how to get wind speed and direction from flags, mirage, and natural phenomenon. In my opinion this is the best book for learning to read wind speed and direction. — Muddler
This article is copyright 2023 AccurateShooter.com. Publication on another site is a willful violation of copyright law.
The 2023 Western Hunting and Conservation EXPO opens today at the Salt Palace Convention Center in Salt Lake City, Utah. The Western Hunting and Conservation Expo is the largest hunting convention open to the public in the Western USA. The EXPO features daily seminars, waterfowl and elk calling championships, auctions, drawings and more. Exhibit halls open 10:00 AM to 7:00 PM, Thursday through Saturday and 10:00 AM to 4:00 PM on Sunday. A partnership between the Mule Deer Foundation, Sportsmen for Fish and Wildlife, and Utah Office of Tourism. With over 400 hunting and outdoor business vendors, this year’s event should attract over 55,000 attendees.
CLICK HERE to register for the EXPO. Various packages are offered. There is a basic 4-day Hall Pass, and other deluxe packages including banquets and entertainment.
New Elite Hunter Bullets from Berger Berger Bullets will attend the 2023 Western Hunting EXPO this year in Utah. Berger’s hunting bullets — VLD Hunting, Elite Hunter, and Classic Hunter –are designed for controlled expansion and extreme hydrostatic shock at both short- and long-range distances. These bullets are available for handloaders, and these bullet options are also offered used in quality factory ammo.
New for 2023, Berger has expanded its successful Elite Hunter ammunition with the following offerings: 6mm Creedmoor 108 Grain Elite Hunter, 6.5 Creedmoor 140 Grain Elite Hunter, 6.5 PRC 140 Grain Elite Hunter, and 300 PRC 245 Grain Elite Hunter.
This article, as published in AccurateShooter.com, contains copyrighted content. It shall not be republished in whole or in part without advanced permission in writing. The act of republishing constitutes legal consent to licensing fees.
Back by popular demand, Hornady is now running its 2023 Get Loaded® promotion. With this promo you can get up to 500 FREE BULLETS with qualifying purchases of Hornady reloading products.
The 2023 Get Loaded program begins on February 1, 2023 and continues through December 31, 2023. Customers who purchase from the qualifying Hornady lineup of reloading presses and reloading tools will receive free bullets after submitting official redemption forms. Depending on the products purchased, customers can get 500 or 100 free bullets, valued up to $234.33.
For centerfire rounds, consistent ignition (and low ES/SD) all begins with the primer in the base of the cartridge. When the firing pin strikes the primer, it sets off a small flame/spark which lights the powder in the case. Energy from that burning powder pushes the bullet out of the cartridge, down the barrel, and out to the target. It’s fair to say, then, that accurate shooting all begins with the primer.
When seating primers, consistency counts. You want to make sure the primer is fully seated in the primer pocket in the base of the case. You want to ensure a slight bit of crush (flattening) for proper seating, and it doesn’t hurt to have very consistent primer seating depths. That’s why guys use tools to uniform their primer pockets.
Here’s a tool that lets you measure the consistency of primer seating depths. Forum members have reported it works really well — measurements are quick and repeatable. Will this tool lower your ES/SD or improve accuracy? That’s hard to say. However, it will definitely help you detect when a primer in a loaded round is seated too high or too low — that’s important. In addition, it can give you precise measurements for comparison testing with different types of primers.
Accuracy One Precision Primer Gauge
The Accuracy One Precision Primer Gauge will precisely measure primer pocket depth and the depth of seated primers in relationship to the face of the case head. The Precision Primer Gauge can also be used to measure the thickness of an unseated primer, allowing you to calculate the optimum seating depth for the particular primers and cases you are loading.
Precision Primer Gauge Features:
Digital Indicator with 0.01mm/0.0005″ resolution
Gauge Body is machined from 303 stainless steel
Small Primer Stem and Large Primer Stem
Both .223 Rem and .308 Win zeroing block
Magnum and .338 Lapua zeroing block
Case Compatibility: The Precision Primer Gauge works with 300 Win. Mag case head diameter (.532”) cartridges, .308 Win. case head diameter (.473”) cartridges, and .223 Rem case head diameter (.378”) cartridges using either large or small primers.
Precision Primer Gauge Pricing:
PPG Without Indicator: $150.00
PPG With Indicator: $210.00
PPG Main Body Only: $55.00
Gauge Stand: $55.00
Phone Orders: Call (814) 684-5322
How to Order the Precision Primer Gauge:
The Precision Primer Gauge can be ordered via phone, email, or postal mail. CLICK HERE for more info.
Assembly Tips: Nylon screw is provided for securing the gauge body to the indicator. The contact point of the indicator must be removed to provide proper function. Also, please note that the standard gauge body is not compatible with cartridges that share the .338 Lapua case head diameter unless the diameter of the magnum step is machined to .595” to accept the larger diameter case head. This modification of the gauge body is available upon request.
Product Tip from EdLongRange. We welcome reader submissions.
The Lapua Monarch Cup 2023 schedule has been finalized. The Lapua Monarch Cup (LMC) is a series of smallbore rifle silhouette matches held in Canada, the United States, and Mexico. Following an abbreviated schedule in 2022, this year’s LMC event features a competition in each country.
For the silhouette shooting community, we predict the Lapua Monarch Cup will be a highly popular event this year. Here are the locations and dates for 2023 Monarch Cup Matches:
1st Match – Canadian Metallic Silhouette National Championship
— Bull River Shooters Association, Cranbrook, British Columbia, Canada
— June 25-27, 2023
2nd Match – NRA Smallbore Rifle Silhouette National Championship
— NRA Whittington Center, Raton, NM, USA
— July 17-19, 2023
3rd Match – Lapua Monarch Cup
— Club De Tiro Saltillo Safari, Saltillo, Coahuila, Mexico
— Oct. 21-22, 2023
Competitors earn scores from each match within their respective classification (Master, AAA, AA, & A), giving all shooters an opportunity for $25,000 in cash prizes to be distributed within the three countries. The Monarch Cup has become one of the most prestigious smallbore silhouette match in the world. Monarch Cup Director Daniel Salazar Stated: “We are focused on taking this shooting sport to a new level, with new scoring system and new awarding system”.
Adam Braverman, V.P. Sales & Marketing with Capstone Precision Group added: “Lapua is very excited to see this match series take place in 2023. We are happy that we were able to include Canada in the 2023 version. The Lapua Monarch Cup is a world class match made even better with Canada’s inclusion.”
Lapua Monarch Cup Board Members are Erich Mietenkorte, Daniel Salazar, Jason Marsh, Alfredo (Pepe) Valdes, and newly appointed Chris Cawthorne. Adam Braverman serves as an advisor. For registration information and the full details on the Lapua Monarch Cup, visit www.lapuamonarchcup.com
For information on the newly created North American Silhouette Shooting Association (NASSA), visit nassasilhouette.org
About Capstone Precision Group
Capstone Precision Group produces Berger Bullets and Ammunition in Mesa, AZ, and is the exclusive distributor of Lapua Components and Ammunition, Vihtavuori Powders and SK Rimfire. Capstone Precision Group is a Part of Nammo Group. For more information, visit Capstonepg.com.
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.”
Bore-snakes are very useful for some applications (primarily a hasty, interim wipe-down). In [my] experience they cannot replace a thorough cleaning with a proper rod and brushes. While the experiment cited here involves rimfire, it may help illustrate. Several years ago, the writer used his new, personal Anschutz to investigate the bore-snake issue. It had been fired ~350 rds with match ammo and had had 3 typical rod/brush cleanings. 
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 
