“The overturning moment MW tends to rotate the bullet about an axis, which goes through the CG (center of gravity) and which is perpendicular to the plane of drag….
Ruprecht Nennstiel, a forensic ballistics expert from Wiesbaden, Germany, has authored a great resource about bullet behavior in flight. Nennstiel’s comprehensive article, How Do Bullets Fly, explains all the forces which affect bullet flight including gravity, wind, gyroscopic effects, aerodynamic drag, and lift. Nennstiel even explains the rather arcane Magnus Force and Coriolis Effect which come into play at long ranges. Nennstiel’s remarkable resource contains many useful illustrations plus new experimental observations of bullets fired from small arms, both at short and at long ranges.
Shadowgraph of .308 Winchester Bullet
A convenient index is provided so you can study each particular force in sequence. Writing with clear, precise prose, Nennstiel explains each key factor that affects external ballistics. For starters, we all know that bullets spin when launched from a rifled barrel. But Nennstiel explains in greater detail how this spinning creates gyroscopic stability:
“The overturning moment MW tends to rotate the bullet about an axis, which goes through the CG (center of gravity) and which is perpendicular to the plane of drag, the plane, formed by the velocity vector ‘v’ and the longitudinal axis of the bullet. In the absence of spin, the yaw angle ‘δ’ would grow and the bullet would tumble.
If the bullet has sufficient spin, saying if it rotates fast enough about its axis of form, the gyroscopic effect takes place: the bullet’s longitudinal axis moves into the direction of the overturning moment, perpendicular to the plane of drag. This axis shift however alters the plane of drag, which then rotates about the velocity vector. This movement is called precession or slow mode oscillation.”
Raise Your Ballistic IQ
Though comprehensible to the average reader with some grounding in basic physics, Nennstiel’s work is really the equivalent of a Ph.D thesis in external ballistics. You could easily spend hours reading (and re-reading) all the primary material as well as the detailed FAQ section. But we think it’s worth plowing into How Do Bullets Fly from start to finish. We suggest you bookmark the page for future reference. You can also download the complete article for future reference and offline reading.
Today — September 28, 2024 — is National Hunting and Fishing Day (NHFD). We’re proud to recognize how important hunting is for millions of Americans — as a source of food for families and as an important connection with nature and the outdoors. The NFHD website has helpful resources for hunters, and in this article we provide links for Where to Hunt, How to get Hunting Licenses, and Hunter Education.
NHFD was first established by President Nixon in 1972. According to NationalToday.com, NHFD’s “roots go back more than 100 years to President Theodore Roosevelt, who introduced the first laws regulating the hunting of wildlife in the United States.”
This month we hope some of our readers can take new shooters afield and introduce them to hunting. Many hunters receive their first introduction to hunting from family or friends as a tradition passed down from generation to generation. There are over 9.2 million hunters in the United States.
To have a successful hunt you must first get to areas where game thrives. Finding the right places to hunt is essential. The NSSF offers a nationwide Where-to-Hunt database of hunting areas. You can click on a particular state, then specify the specicies you wish to hunt. This is a very useful resource.
In most states, when hunting game animals, you’ll need a hunting license and/or zone permit. The Federal Fish & Wildlife Service has state-by-state listing for hunting licenses on FWS.gov. Click the box below to learn how to get hunting licenses in your region.
For all hunters, whether they have mentors to guide them or not, the most important first step into the woods begins with a state-certified hunter education course. Click the box below to see hunting education opportunities around the nation.
Game Resources — To learn more about different game species, click these NSSF links:
To help you prepare for a fall hunt, here is a free, printable Deer Practice target. Hone your skills on a trio of bucks with a red bullseye centered on the animals. You can print the targets in black and white, but they look best in color. Right-click the image below to download a FREE printable target PDF file.
Tomorrow, September 28th, is National Hunting and Fishing Day, held each year on the fourth Saturday of September. To help the avid hunters among our readers, here are Twenty Tips that can help ensure a safe and successful hunt. These tips have been compiled from our AccurateShooter Hunting Forum, with help from Hunting Editor Colton Reid (who has already been out hunting this month). Some items are preparatory — such as working with maps, sighting in the rifle, and improving physical fitness. We also talk about equipment — having the right gear, from proper boots to a GPS for multi-day hunts.
Of course there are entire volumes written on hunting, but these 20 Tips can benefit all hunters. Follow these suggestions and you should have a safer hunting experience with greater likelihood of success. If you liked these pointers, you’ll find two dozen more helpful hints on the NSSF Website.
Preparations Before The Hunt
1. Map Your Hunt and Notify Others — Before your hunt, make a plan and notify friends and family members about WHERE you are going and your intended return date and time. Print out a Google Satellite map and locate landmarks and trailheads. Mark where you plan to park your vehicle and give a copy of this map to friend and/or family members. A hunter may injure himself by falling off a rock, or tumbling in a creek-bed. After that kind of injury the hunter may be confused or unable to walk. If you get stranded in the wilderness, you want trusted persons to know where you are. So, before you leave on a trip, provide a map to a friend or family member. Show them where you will leave your vehicle, and where you expect to be every day of your hunting adventure.
2. Licenses and Permits — Make sure you have a valid hunting licenses and all the necessary tags. Begin this process with ample time before your intended hunt(s). The NSSF adds: “If you are crossing state or national borders, find out about any special considerations you must take care of. Border crossings can mean knowing about firearm transport laws or Chronic Wasting Disease-related regulations.”
3. Work on Your Fitness — On a multi-day hunt you may be trekking many miles. You need to be in good shape. If you are out of shape you may be putting yourself in a precarious situation, particularly if you underestimate the terrain difficulty. As the NSSF says: “Not being able to handle the conditions lessens your chances of success, can turn a great experience into an agonizing one and can endanger your health.”
4. Do Your Homework — Study the area you will be hunting. Talk to other hunters. Look at satellite photos. Get a real sense of the walking and terrain challenges. For a multi-day hunt, MAKE a PLAN. The NSSF states: “Eliminate surprises. Learn as much about where you will be staying, the area you will be hunting, what the weather might be like and what you need to bring[.]”
5. Rifle and Ammo — Make sure your rifle is sighted-in and your ammo is tested. Sight-in your rifle with the ammo you plan to use on your hunt. CLICK HERE for 4-Shot Sight-in Method. After sighting-in from the bench, confirm your zero by shooting from typical hunting positions (kneeling and with forearm supported on a rock or post).
6. Shooting Positions — Practice the shooting positions you will use in the field. Practice sitting, kneeling, and prone positions. You should also practice with shooting sticks, using your day pack as a rest, and with a bipod. Try to have a rock-steady rest before taking your shot.
7. Back-Up Irons — If possible, select a rifle with back-up iron sights. While modern scopes are very durable, they can and do fail (glass can crack). If you’ve invested a lot of time and money in your hunt, back-up iron sights can keep you in the game even if your riflescope fails.
8. Communications and GPS — Bring a GPS if you are in a wilderness area far from civilization. It’s a good idea to bring a cell phone, but you may not have coverage if you’re quite a distance from populated areas. A smart-phone also doubles as a digital camera to record your trophies. For navigation and safety, consider getting Garmin inReach Explorer+. This high-tech handheld unit features interactive SOS, connecting you to the GEOS 24/7 search-and-rescue monitoring center. They also allow you to send and receive text messages, no matter where you are, via advanced inReach satellite technology. Yes you can communicate even if you are miles from the nearest cell tower.
9. Select Good Gear — Make sure you have GOOD BOOTS that are comfortable — you’ll spend a lot of time on your feet. You may want a pack with harness for your rifle so you have both hands free. On a multi-day trip, make sure you can carry enough water, and that you will stay warm enough at night. Good practices for backpacking apply to multi-day hunts.
10. Make a Gear Checklist — Create a complete checklist of the gear and supplies you need. That includes arms, ammunition, rangefinder, binoculars, proper clothing (including spare clothes), hunting accessories, sleeping gear (on multi-day hunts), toiletries, medications. Don’t forget a good first aid kit — lots of bad things can happen during any wilderness trip. You can cut a hand, break an ankle or worse.
During The Hunt
11. Have a Plan — know where you plan to go and when. Try to be where you want in the early morning and early evening hours when deer are likely most active.
12. Take Your Time — If you spot a deer and get too excited and don’t take your time you may spook him. Go slow and glass. If possible, wait for the animals to bed down and relax. Then work out the best way to approach your prey. Remember, “You get so few opportunities, don’t screw it up!”
13. Glass More, Walk Less — Let your eyes do the walking — get good binoculars and use them. With their heightened senses of smell and hearing, deer/elk are able to spot you way better than you can spot them. If you are walking around a lot, chances are you are getting spotted by your prey.
14. Riflescopes Are Not Binoculars — Never use a riflescope as a substitute for binoculars. The temptation to do so is real, but when one does this, one is by definition pointing the muzzle of the gun at unknown targets. We like binoculars with built-in rangefinders. When glassing at long range, try supporting your binoculars on your pack.
15. Be Sure of Your Target before Shooting — Every year during whitetail season, farmers are forced to spray-paint their cattle or risk having them “harvested” by hunters who don’t bother confirming the species in their sights. Hunters with “buck fever” can make mistakes. When in doubt, don’t shoot.
16. Know When to Unload — When finished hunting, unload your firearm before returning to camp. You should also unload your gun before attempting to climb a steep bank or travel across slippery ground.
17. Bring Hearing Protection — While pursuing and stalking your prey you’ll want full sensory use of your ears. But when you’re finally ready to take the shot, slip in hearing protection. A shot from a large-caliber hunting rifle can exceed 170 decibels. Unprotected exposure to noise from a SINGLE 170+ dB shot can cause permanent hearing damage. (Source: ASHA.org). If you make a follow-up shot, you double that noise hazard. Therefore a hunter with a non-suppressed rifle should have hearing protection available.
You can keep a pair of easy-to-use quick-insert ear plugs on a cord around your neck. Or, get a lightweight neck band with earbuds, such as the Sellstrom Band, Peltor Band, or 3M Safety Band, all with a good 25 dB or better Noise Reduction Rating. You can keep these lightweight bands around your neck for quick deployment before you shoot.
“Once a hunter is successful, the REAL work begins.” — Colton Reid
18. Harvesting the Animal — When dressing your animal, be careful with the meat. You’ll want very sharp knives. Some hunters prefer knives with replaceable, razor-sharp blades. Don’t rush the task. Make sure you don’t get moisture or dirt on meat. The three spoilers of meat are heat, moisture, and dirt.
19. Pace Yourself When Packing Out — If you DO succeed, and bring down a big buck, will you be able to dress the animal and carry out the meat? Always be prepared to hike out with extra weight. If you are successful, make sure not to waste the meat you worked so hard for. Choose a pack that can help you carry a heavy load. Remember, this is not an insignificant challenge — you may be carrying 60 to 100 extra pounds in addition to your other gear. Again, take your time. Rest as needed. Don’t hurt yourself.
20. Remember to Enjoy the Experience — Our Hunting Editor, Colton Reid, offers this sage advice to all hunters, but particularly to novices: “Have fun, and appreciate your hunt, whether you bag a buck or not. It is a privilege to experience the wilderness and to get away from the city. Enjoy it while you’re out there. And keep your spirits up. You may get tired, but remember that ‘comes with the territory’. At the end of the day, yes you may be exhausted. And you may want to quit and go home. But stay positive, stay focused. Be patient, the experience is worth it.”
CLICK HERE for Hunter Training/Mentoring Programs State-by-State.
Visit WhereToHunt.org
There’s a great online resource for hunters that will help you find game locations in your state and ensure you have all the proper permits and game tags. WheretoHunt.org features an interactive map of the country. For all 50 states, the NSSF has compiled information about hunting license and permits, where to hunt, hunter education classes, laws and regulations and more. For each state you’ll also find a link for required applications and license forms.
Hunting season is coming soon around the country. If you want to get hunting tips from experts, here is a great audio “infotainment” resource. Leupold offers podcasts, 40-75 minutes in length, on a variety of topics of interest to hunters and precision shooters. A podcast is like a radio show that’s available 24/7, at your convenience. When you want to “tune in”, via your home computer or mobile devices, just visit the Leupold Podcast Page.
Oregon-based optics-maker Leupold & Stevens (“Leupold) offers the “Core Insider” podcast series. These podcasts deliver hunting advice and recount successful hunting trips — such as Caribou hunting in Alaska. Other Leupold podcasts provide optics info, industry intel, and tech tips. Leupold’s Core Insider podcasts can also be accessed directly from Leupold.com. From the Leupold Podcast Home Page, you can stream the podcasts live or download for later listening.
You can also stream these podcasts via iTunes and Spotify.
The Leupold Core Insider Podcasts cover a wide variety of shooting and hunting topics. One early episode features Leupold team members Kyle Lamb and Buck Doyle discussing long-range shooting, while recent Episode 55 explains how Binoculars and Rangefinders function. There are now 96 Leupold Podcasts available online for FREE.
Deer hunting season is underway now across the country. If you plan a hunt in the days or weeks ahead, here are three important tips to follow if you want to successfully harvest a deer this fall. These tips come from an article by noted huntress Nikki Boxler for the Winchester Blog. CLICK HERE to read full article.
Mistake #1: Not Sighting-In Your Gun with the Ammunition You Plan to Hunt With
You want to make sure you test the actual ammo you will use in your deer rifle. Make sure you are sighted-in properly with THAT ammo. Nikki says: “I always make it a point to shoot a few days before the season opens with the exact ammo and equipment that I will use while in the woods. Nothing gives me more confidence then knowing those last shots are hitting their target[.]”
Mistake #2: Rushing the SHOT — Focusing on Taking the Shot, Rather Than on MAKING the Shot
Being in the right place at the right time is essential to getting a shot on a deer. If you can’t MAKE the shot, being in the right place at the right time doesn’t matter. I have been guilty of this. A buck walks in and the conditions are perfect. He’s not far, but instead of taking my time I rush the entire shot and the results are not as I desired.
Mistake #3: Sticking to the Same Tactics Day in and Day Out
Throughout the course of the season, deer switch up their tactics. So, why wouldn’t we? When I was younger all of my hunting setups always looked the same — I’d have a ladder stand on the edge of a field. This was my comfort zone. I always stuck to it until recent years. I’ve now made it a point to step out of my comfort zone and explore new areas. This has definitely paid off with the percentage of deer I harvest.
NSSF urges all gun owners, hunters, recreational target shooters and supporters of the Second Amendment to register to vote and then vote in the upcoming election. On Election Day, November 5th, be sure to vote or, alternatively, vote by mail in advance where that is an option. If you have not yet registered, you can get information on registering by visiting GunVote.org.
With just 46 days left until Election Day, several states are starting to send out vote-by-mail ballots and offering advanced in-person voting. NSSF’s #GUNVOTE voter education campaign seeks to ensure all gun owners and hunters are registered to vote and educated about where the candidates stand on the Second Amendment and gun rights.
The GunVote.org website conveniently lists all U.S. states with links to state websites where more details about registering to vote, early voting protocols and the entire process can be found. Gunvote.org also has information on polling places so that exercising the right to vote is as easy as possible.
“For millions of Americans who cherish their Second Amendment rights, this truly is the most critical election in history. Vice President Kamala Harris has clearly laid out her anti-gun agenda [which includes mandatory confiscation of AR15s]. It is abundantly clear she will continue the Biden-Harris attack on the Second Amendment and will restrict the rights of law-abiding Americans even more than she has over the past three and a half years,” said Lawrence G. Keane, NSSF Senior V.P. and General Counsel.
A Few Thousand Votes Can Make a Difference in Swing States
In 2020, the presidential election swung in just a few key states by margins of a few thousand votes. Reporting shows there are more than 10 million hunters and Second Amendment supporters who remain unregistered to vote ahead of the 2024 election. Make sure you’re registered. Check that your hunting and range buddies are registered too. Visit www.GunVote.org for all the information you need to get registered and to find your polling place to make sure you Don’t Risk Your Rights® on November 5th.”
Reports have show millions of American firearm owners still have yet to register to vote. That includes more than 515,277 in Pennsylvania and 370,000 each in Michigan and North Carolina. In addition, Georgia, Wisconsin, Missouri and Virginia all have more than half a million hunters and gun owners that remain unregistered and in Arizona – another state that could swing the election – that number totals approximately 133,000.
Many shooters these days clean their cartridge brass ultrasonically, or wet-tumble their cases with stainless media (above). Both methods get brass clean and shiny, inside and out. However, when those wet-cleaning processes are completed, you’re left with a pile of soaking wet brass. How do you dry your brass quickly and efficiently, without unsightly water spots? Read on for some great answers…
In our Shooters’ Forum, Member Terry asked: “How do you dry your brass after Ultrasonic cleaning?” In a Reloading Forum Thread, many smart suggestions were posted. A dozen fellow members outlined a variety of effective case-drying procedures, which work equally well for both wet-tumbled brass and ultrasonically-cleaned cases. Here are the Top 10 brass-drying suggestions from our Forum members.
TOP TEN Ways to Dry Cartridge Brass After Wet Cleaning
1. Food Dehydrator — Shake the brass in towel to get the bulk of water off. Next leave in the food dehydrator for 45 minutes or until there are no signs of moisture inside the cases. — Lawrence97
2. Lyman 5-Level Case Dryer — Rinse off cleaning solution(s), then load brass by type into racks in Lyman Cyclone Case Dryer. This is easier to load/unload than food dehydrators and holds more cases.
3. Hot Water + Compressed Air — Rinse all your cases as a batch using scalding hot water from the kitchen sink. Hot water evaporates off of brass very very quickly. Then hit them with compressed air. Takes 10 minutes. Simple. — SG4247
4. Oven Dry in Pre-Heated Oven — After pre-heating to 200° or so, turn off oven and put brass inside on a tray. Most important! Tell your wife what you are doing so she doesn’t crank it up to 425 to heat pizza! — MClark
NOTE: Many other members suggested oven drying at 150-200°. We recommend turning OFF the oven so you don’t cook your brass if you forget to remove the cases.
5. Towel Dry then Warm with Heat Gun — Roll brass in a towel until no more water shakes out. Lay out on cardboard box top and blow off with Harbor Freight heat gun. $9.99 on coupon. Two minutes of heated air and about half hour of wait and they are good to go. This is with primers removed. — Shaggy357
6. Compressed Air, then Sun Dry Outside – I rinse the brass, then blow them out with compressed air. Then, dependent on the time of year, lay them on a towel in the sun. — HogPatrol
7. Dishwasher on Dry Cycle – In the winter, I drop my wet brass cases neck-down on the rack pegs in the dishwasher, then turn on the dry cycle. In the summer…well, I’m in Texas. They go to the porch for a bit. — Toolbreaker
8. Alcohol Rinse then Air or Oven Dry — Rinse in 90% Isopropyl alcohol and either let air dry or stick in 175° oven for half an hour. Alternatively, use a dehydrator. — Zipollini
9. Slow Air-Dry in Loading Blocks — I have a reloading block with holes drilled in it. I simply load the block up and let it air-dry in the cupboard for a couple of days. — JCS
10. Wipe with Towel Then Anneal Normally with FLAME Annealer — This thread is stirring my OCD side. Seems complicated for just drying — my brass dries just fine when I anneal it. This entire process can’t take an hour per batch. When finished, the brass is cleaned, annealed, and ready to size. — CHLuke
NOTE: This is NOT recommended for use with electronic AMP annealers. Use this ONLY with flame annealers.
Deprime, then tumble brass with stainless media, water, Lemishine, and dish detergent.
Shake them easily in a strainer to knock out most media then grab 4-5 pieces, shake them over the bucket for the last of the media then inside a towel.
Finally blow out the primer pockets and wipe with a towel, load in the Annealeez flame annealer.
Talented sharpshooter Kirsten Joy Weiss is featured in an episode of NRA All Access. The show covers Kirsten’s development as a competitive shooter, and her success as a trick-shot artist with her own popular YouTube channel. Here’s the All Access segment featuring many of Kirsten’s most famous trick shots.
During the video Kirsten also talks about her background in shooting and how she wants to be a good ambassador for the shooting sports, “spreading the positive reality of shooting”. Kirsten explains: “The fun challenge and joy of shooting is important to me because I really wanted to be a positive example. So when the media says the ‘guns are a bad thing and nobody does anything good with guns’, they can say ‘Well, what about her [Kirsten]’?”
Kirsten: “I think that it’s important for young girls to have somebody that they can look up to… I feel responsibility to show young shooters coming up, especially females, that you can respect yourself and shoot a gun as well.”
A gifted “natural” shooter, Kirsten started shooting fairly late — at age 16. Despite her relatively late start, she learned very quickly, and managed to earn a place on the University of Nebraska shooting team. That literally opened up a new world for Kirsten: “During the course of my career, I’ve had a lot of success. I’ve gone to World Cups… in Zagreb, Croatia, in Munich, Germany. I’ve won National Championships, and got on to the U.S. Olympic short list, so it’s been a good career.”
Proper Cheek Weld
No matter what your discipline — smallbore, silhouette, High Power, F-Class, or even PRS — it’s vital to have a consistent cheek weld for every shot. You want your head to be in the same position on the stock each time. This helps ensure proper eye-to-sights/optic alignment and consistent rifle balance.
In this video, Kirsten explains how to find the best position for your head on the stock, which may require adjusting the cheekpiece and/or length of pull. Then Kirsten demonstrates how to maintain consistent cheek weld shot after shot.
Kirsten tells us: “A lot of people don’t think of shooting as a sport, but it absolutely is, and I would even go so far as to say that it is an art form.” We don’t know if this is art, sport, or magic, but very few shooters have the skill or flexibility to make this upside-down shot…
Our friend Robert Whitley of ARX Enterprises LLC has learned, through careful measurement and testing, that some barrels threaded 5/8″ x 24 TPI at the muzzle may not deliver optimal accuracy. The reason is that the end of the barrel can bell out slightly, like a trombone, because too much steel has been removed. This is particularly true with .30-caliber barrels, but it can also be a problem with smaller caliber barrels (even 6mm). Robert demonstrates this phenomenon in the video below. All gunsmiths, and anyone considering threading a barrel, should watch the video. At 1:00 – 1:30 Robert gauges a 5/8″ x 24-threaded .30-Caliber barrel. You can see the belling effect clear as day.
“When setting up a commercial barrel in the lathe, we noticed that the maximum-sized bushing that would fit in the bore at the chamber end was almost .0015” smaller [than what would fit] at the muzzle. That precipitated my pin-gauging of a number of different commercial barrels that were threaded for 5/8” x 24 TPI. What I found is what’s shown on the video.” – R. Whitley
Solve Problem with a Larger Thread Diameter
If 5/8″ x 24 threading is potentially harmful to accuracy, is there a solution? Yes, you simply need to leave a little more steel on the barrel. (See Video starting at 02:40.) Frank Green of Bartlein barrels states: “We get these questions all the time. I say run the largest thread diameter that is possible.” Robert Whitley has found that a 3/4″ x 28 TPI threading does not cause the “belling effect”. Accordingly Robert recommends 3/4″ x 28 if you need to thread your barrel for a muzzle brake or suppressor. Robert explains: “We only make 3/4” x 28 TPI muzzle brakes and that’s what we recommend to customers.”
“See how much meatier the 3/4″ threading is vs. the 5/8″. The 3/4″ threading offers a lot more metal around the bore. There’s a lot less opportunity for the bore to become bell-mouthed…” – Robert Whitley
Barrel Threading Diameter — What’s Important to Know
By Robert Whitley
In truth, the 5/8″ x 24 TPI threading never came out of any accuracy-based think tank or set-up, it’s a military .30-Cal threading for barrels that someone has to carry around (they needed to keep the barrel weight down so it was smaller in diameter and the threading had to work with that situation). People have somehow assumed because the military uses that threading for certain things that it must mean that it’s also fine for a highly accurate rifle too, but that’s not really correct.
I don’t think there is any better and realistic option than the 3/4″ muzzle threading, and we also do it so there is no relief cut behind the threads on the barrel (i.e. put the relief cut on the brake or jam nut, don’t chop down on the muzzle of the barrel). For some reason many have a hard time grasping that the metal at the muzzle end of a rifle is “sacred” and you should not cut it down any more than absolutely necessary. A little threaded pencil diameter nub on the end of a barrel is not ideal for accuracy especially if it’s threaded and you need to torque on it. I cringe when I see a barrel with something like an MTU or Heavy Varmint contour, only to have an itty-bitty pencil thin threaded nub right at the muzzle so someone can “screw on a can” or a muzzle brake.
Lessons Learned Over the Years
A number of years ago I did a 30BR rifle project with Craig Kostyshyn who was big in the 30BR game and he made some of the best 30BR rifle barrels for benchrest competition. When I did the project I wanted a medium-heavy Palma type contour barrel I could use and also have a muzzle turndown for a front sight band. When he found out I was going to have the muzzle turned down he said “whoa, I need to provide for that when I make the barrel because if you turn the front down later you’ll be shooting a trombone” (i.e. the muzzle bore dimension would open up).
What he did was rough contour the barrel with the turndown (about .010” oversize) before he lapped the barrel, then when he lapped the barrel he took it easy in the muzzle area and worked the back of the barrel more. I thought he was a little bit excessive in his concerns but the barrel shot great and I wasn’t going to argue with him, after all he was shooting groups in the ones. I kind of just filed that away and never thought about it until recently when I went to have Fred from Sabreco do some chamber re-work on a commercial .30-caliber barrel I had. When setting up the barrel in the lathe and indicating things Fred noticed that the maximum-sized bushing that would fit in the bore at the chamber end was almost .0015″ smaller [than what would fit] at the muzzle and he mentioned it to me. That precipitated my pin-gauging of a number of different commercial barrels I had that were threaded for 5/8” x 24 TPI. What I found is what’s shown on the video.
NOTE: This is a copyrighted article. Do not reproduce or re-link more than 75 words without written permission from AccurateShooter.com.
This can be very important — even life-saving. For example, with a hang fire, i.e. a round that does not fire immediately, it is vital to keep the gun pointed DOWN-RANGE. And with a squib load, which may have left a round inside the barrel, it is vital to UNLOAD and NOT take another shot! If you did, the gun could blow up in your hand when the second, full-charge bullet hits the trapped bullet.
The Five Topics Covered Are:
Misfeed (aka Tip-Up)
Double Feed
Stovepipe (Failure to Extract)
Misfire / Hangfire
Squib Load
1. Misfeed or Tip-Up: With any misfeed you should stop firing. With the muzzle pointed safely down-range, remove the magazine, then pull the slide back and remove the round that did not feed. Check the slide for dirt, debris, and check the round that did not feed. After re-inserting the magazine, make sure the mag is seated properly.
2. Double-Feed: This is a fairly common issue with some gun types with worn springs or cheap magazines. Again you want to remove the magazine. CTD states: “Remove the magazine and cycle the action until your double-fed rounds fall out — always keeping the muzzle pointed in a safe direction[.]”
3. Stove-Pipe: This occurs when the case of a fired round does not eject fully. There can be many causes — damaged extractor, low-pressure powder charge, dirty chamber, or greasy cartridge brass. In addition the issue is common with old, worn-out recoil springs. To avoid Stove-Pipes, replace the recoil spring every 4000 rounds, and make sure your chamber is clean and the extractor is not chipped or damaged.
4. Misfires and Hang-Fires: There are multiple causes for misfires (“click no bang”) and hang-fires (slow ignition). There can be a defective primer, the firing pin could be damaged, the powder many have been bad, or the case not filled properly. With a misfire, keep the gun pointed down-range at least one minute. If the case does not fire, eject it but leave it on the ground. With a hang-fire (delayed ignition after firing pin strike), keep the gun pointed down-range, then drop the magazine and eject the (new) unfired cartridge in the chamber and inspect the gun when completely empty.
5. Squib Load: A squib load is when the gun fires, but the actual case ignition is very light with little noise, smoke, or recoil. This can be because the case had a primer but no powder. Or it can be because the powder did not ignite. Squib loads can be very dangerous in rapid-fire situations. If you EVER get a squib load STOP immediately! Do NOT fire another round! This is because the squib may have left a bullet inside the barrel.
5. Towel Dry then Warm with Heat Gun — Roll brass in a towel until no more water shakes out. Lay out on cardboard box top and blow off with Harbor Freight heat gun. $9.99 on coupon. Two minutes of heated air and about half hour of wait and they are good to go. This is with primers removed. — Shaggy357
A gifted “natural” shooter, Kirsten started shooting fairly late — at age 16. Despite her relatively late start, she learned very quickly, and managed to earn a place on the University of Nebraska shooting team. That literally opened up a new world for Kirsten: “During the course of my career, I’ve had a lot of success. I’ve gone to World Cups… in Zagreb, Croatia, in Munich, Germany. I’ve won National Championships, and got on to the U.S. Olympic short list, so it’s been a good career.”
