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November 28th, 2009
 When using the Stoney Point type OAL gauge (now sold by Hornady), we sometimes get a bullet stuck in the rifling. This can also happen with a squib load or when extracting a round with the bullet seated hard in the lands. You can use a cleaning rod or a wood dowel to tap out the bullet, but a brass drop rod will do the job faster and easier, with less risk of nicking your crown.
You can make a drop rod yourself from brass or bronze rod. Just make sure to smooth over any burrs or rough spots on the ends. Or just order a set of brass bullet drop rods from Sinclair Int’l. You drop the Sinclair Rods (item 52-500) down the barrel from the muzzle end with the rifle standing upright. Sinclair Bullet Drop Rods are made of brass so they will not harm the rifling in your barrel. Each $11.95 set consists of two Drop Rods — a 3/16″ diameter rod for 20 caliber through 25 caliber bores, and 1/4″ diameter rod for 6.5 through 416 caliber bores.
Remember, for safety sake:
Drop Rods are never to be used to dislodge live or loaded rounds! Always remove the Drop Rod from the barrel before chambering another round!
November 28th, 2009
As an extended “Black Friday” sales promotion, Brownells is offering 10% off all orders over $150. This promo, which started on November 27th, runs through midnight, on “Cyber-Monday”, November 30th. To qualify for the 10% discount, visit brownells.com and use Coupon Code CYB to get 10% off any order over $150. NOTE: There are also many specially-priced items on sale all weekend long. You can use the 10% discount (Code CYB) even on these special sale items.
Sinclair International is running a similar promotion through midnight on Monday November 30th. Again you can get 10% off any purchase. However, to qualify for the discount, your total order must exceed two hundred dollars ($200.00). To get your discount (on orders over $200) use Promotion Code SAVE10 during online check-out.
November 28th, 2009
A vehicle GPS Navigation system is great for the active shooter or hunter who regularly travels to distant ranges or hunting grounds. Prices for high-quality GPS systems have been dropping even while more features are being added. When we saw that the latest-generation Garmin nüvi 255W 4.3-Inch Widescreen Portable GPS went on sale for $119.99, we thought that was worth a mention in the Bulletin. Assistant Editor Jason Baney did a lot of research on vehicle GPS systems a few months back. He concluded that the Garmin 255W offered the best “bang for the buck.” And that was when a 255W cost about $160.00. Jason purchased a Garmin 255W and recommends it: “My Garmin 255W is easy to use, the screen is bright and easy to read, and the routing is usually very good.”
CLICK for Best Price on Garmin nüvi 255W 4.3″ Widescreen Portable GPS Navigator
CLICK HERE for more Garmin 255W Photos and Complete Specs.
This unit has some impressive features. Of course it provides spoken turn by turn directions. You can also search locations with your home computer and load them into the 255W — the unit can hold up to 1000 destinations or way points. The 255W has a large, bright touchscreen that makes it easy to enter directions. With so many GPS Nav units available, the 255W has become one of the most popular on the market. One nüvi 255W owner explains why: “I chose the 255W for several reasons… It uses some of the newest and best maps available. It has one of the more usable touch screens for entering destinations. It’s fast to acquire satellites. And Garmin almost always comes out on top in reviews — especially in routing. Ultimately, you buy a car GPS to get you from Point A to Point B as easily and efficiently as possible. And that’s what the 255W does best. If you’ve ever had a ‘Brand X’ GPS take you on some strange route that adds 20 minutes to your trip, has you turn the wrong way down a one way road, tells you to turn AFTER you’ve passed the street, frequently loses the satellite signal, or has old maps missing streets, you know how important this stuff is.”
No Lane Assist on 255W
We do wish the $120.00 Garmin 255W offered the “Lane Assist” feature found in the more expensive Garmins (but for $120 you can’t have everything). Lane Assist zooms in to show the lane you need when exiting freeways, or navigating through large interchanges. The Garmin 255W does tell you when and where to turn, it just doesn’t offer enhanced Lane Assist graphics. If you want a unit with Lane Assist, we recommend the Garmin nüvi 855. Along with Lane Assist the 855 model offers speech recognition — a nice feature that can simplify inputting new destinations or switching among GPS displays while driving.
November 27th, 2009
 One of our readers asked “What effect does altitude have on the flight of a bullet?” The simplistic answer is that, at higher altitudes, the air is thinner (lower density), so there is less drag on the bullet. This means that the amount of bullet drop is less at any given flight distance from the muzzle. Since the force of gravity is essentially constant on the earth’s surface (for practical purposes), the bullet’s downward acceleration doesn’t change, but a bullet launched at a higher altitude is able to fly slightly farther (in the thinner air) for every increment of downward movement. Effectively, the bullet behaves as if it has a higher ballistic coefficient.
Forum members Milanuk explain that the key factor is not altitude, but rather air pressure. Milanuk writes:
“In basic terms, as your altitude increases, the density of the air the bullet must travel through decreases, thereby reducing the drag on the bullet. Generally, the higher the altitude, the less the bullet will drop. For example, I shoot at a couple ranges here in the Pacific Northwest. Both are at 1000′ ASL or less. I’ll need about 29-30 MOA to get from 100 yard to 1000 yards with a Berger 155gr VLD @ 2960fps. By contrast, in Raton, NM, located at 6600′ ASL, I’ll only need about 24-25 MOA to do the same. That’s a significant difference.
One thing to remember — it is the barometric pressure that really matters, not simply the nominal altitude. The barometric pressure will indicate the reduced pressure from a higher altitude, but it will also show you the pressure changes as a front moves in, etc. which can play havoc w/ your calculated come-ups. Most altimeters are simply barometers that read in feet instead of inches of mercury.”
As Milanuk states, it is NOT altitude per se, but the LOCAL barometric pressure (sometimes called “station pressure”) that is key. The two atmospheric conditions that most effect bullet flight are air temperature, and barometric pressure. Normally, humidity has a negligible effect.
One important thing to remember is that the barometric pressure reported on the radio (or internet) may be stated as a sea level equivalency. So in Denver (at 6,000 feet amsl), if the local pressure is 24″, the radio will report the barometric pressure to be 30″. If you do high altitude shooting at long range, bring along a Kestral, or remember to mentally correct the radio station’s pressure, by 1″ per 1,000 feet.”
You can do your own experimental calculations using the JBM Online Ballistics Program (free to use). Here are two printouts, one showing bullet trajectory at sea level (0′ altitude) and one at 20,000 feet. For demonstration sake, we assigned a low 0.2 BC to the bullet, with a velocity of 3000 fps.
Trajectory of Bullet fired at Sea Level
Trajectory of Bullet fired at 20,000 feet
Here’s a useful resource on External Ballistics if you want to learn more about the effects of altitude and barometric pressure on bullet flight.
November 27th, 2009
It’s Black Friday, the busiest shopping day of the year. That means there are some spectacular deals available out there on name brand electronics and optics. You can fight the crowds at the malls, or shop online from the comfort of your home. Here are some great deals we found on Amazon.com.
Canon SX20-IS Digital Camera, $349.00
The Canon SX20-IS is an amazing still and video camera for the price. It takes still images up to 12.1 megapixels, using a 20X optical zoom. As you’d expect from Canon, it offers built-in image stabilization and outstanding color and contrast. But here’s what makes this camera special — it shoots HD movies in 16:9 (wide) format, plus SD movies in standard 4:3 format. And the movies are stored to an SDHC memory card, which you can easily transfer to your computer. Heck of a camera for $349.00 with FREE Shipping on Amazon.com. |
Canon PowerShot SX20IS 12.1MP Digital Camera with 20x Wide Angle Optical Image Stabilized Zoom and 2.5-inch Articulating LCD |
Samsung 10″ Netbook computer, $339.99 (Windows XP)
This is the netbook used by your Editor. It has a very sharp screen and a battery rated for 9 hours. I’ve been able to get about 7.5 hours run-time from the battery. I really like this unit because it has a great keyboard (probably the best in class) and a rubberized shell that adds to durability. The built-in networking is excellent (it automatically logs on to nearby Wi-Fi hubs), and this computer isn’t stuffed with useless “bloatware” you have to remove. Note, if you want/need Windows 7, look for another brand, such as the latest Toshiba. |
Samsung GO N310-13GB 10.1-Inch Midnight Blue Netbook – 9 Hour Battery Life |
Manfrotto 410 Geared Head, $196.99
If you have an expensive spotting scope, this geared head is well worth the money. It permits you to make precise elevation or tracking (horizontal) adjustments without getting way off target. With most tripod heads you have to fiddle with a bunch of controls to move the scope, but then it usually goes too far and you have to start all over again. With the Manfrotto 410 head you can move the viewing point smoothly, in very small increments. Want to raise your view up 1 MOA at 1000 yards, without touching the horizontal position? No problem. Once you get one of these geared heads you’ll wonder how you lived without it. |
Manfrotto-bogen 410 Compact Geared Head with Quick Release – Supports 11.1 lbs
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November 26th, 2009
 In the USA, Thanksgiving is one of our most cherished holidays, a time families re-unite and spend “quality time” together. Increasingly, in our society, families are spread apart, with parents separated from children by thousands of miles. We hope that today, you have a chance to be with your loved ones. For our many overseas readers, you can celebrate Thanksgiving in spirit. Here at AccurateShooter.com, we have our own “family” of sorts–a community of sportsmen and women linked by a love of fine firearms and extreme accuracy. To all our readers (we have more than 50,000 “unique” site visitors every week), we wish you a Happy Thanksgiving, and we hope that, on this day, you can be with your family. For those who are traveling, we wish you a safe trip and godspeed.
“Call it a clan, call it a network, call it a tribe, call it a family. Whatever you call it, whoever you are, you need one.” — Jane Howard
“Other things may change us, but we start and end with family” — Anthony Brandt
November 26th, 2009
Tonight at 8:00 pm Eastern Time, the Science Channel features the amazing artillery of the World Punkin Chunkin Championship. This fun-filled event, held each year in November, draws up to 70,000 spectators, raising money for charity.
Since 1986, Sussex County, Delaware has been home to the annual Punkin Chunkin World Championships — a 3-day festival where hardcore engineers and backyard tinkerers trailer their gigantic, homebuilt contraptions with one common goal: to launch 8- to 10-pound pumpkins as far as mechanically possible. The competition is divided into seven categories defined by the type of machine — motorized, centrifugal spinners, and the mighty air cannons.
Tonight, the Science Channel airs an hour-long special on the Chunkin Championship — part science experiment, part genuine Americana. Hosted by comedian Brad Sherwood, this special documents the ingenuity of the biggest, loudest, greatest pumpkin hurling competition in the world. Sherwood follows select teams as they journey from machine design to testing their equipment to the competition’s climactic finale, where every team hopes to reach the one-mile mark. Inspired by the original Delaware event, lesser chunkin competitions have been started in other US states, and in the Netherlands, Switzerland, and Great Britain.
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If you can’t wait for tonight’s broadcast, visit the Science Channel website for Punkin Chunkin videos, Chunkin engineering analyses, Chunkin quizzes, and even online Chunkin’ jig-saw puzzles. There’s enough stuff online to keep you entertained for hours.
Chunkin Videos
Chunkin Quiz
Chunkin Puzzles |
Punkin Chunkin FAST FACTS:
- The world record for Adult Air Cannons is Young Glory III at 4,483 feet.
– The world record for Adult Torsion is Chucky II at 3,091 feet.
– The world record for Adult Catapult is Fibonacci at 2,862 feet.
– The world record for Adult Trebuchet is Yankee Siege at 1,894 feet.
– The world record for Adult Centrifugal is 2,770 feet.
November 25th, 2009
Writer David Fortier recently conducted an extensive torture test of AR15 magazines — both polymer and metal-bodied. Fortier’s test results, some of which may surprise you, are found in David’s article “Feeding Your AR”, published in the latest (November 20, 2009) edition of Shotgun News.
 Fortier tested a variety of popular AR mags including PMAG, Tango Down, CProducts SS, Brownells, Bravo Company, Lancer, MSAR, and Tapco. The “torture tests” included dropping the mags on their feedlips from 8.5 feet, driving a full-size army truck over the mags, jumping on the mags, and deliberately tilting the followers. The mags were also tested for fit and function with live-fire shooting. Results were a little surprising. When dropped from 8.5 feet on their feedlipgs, the Tango Down, PMAG and TAPCO all split down the spine. CLICK HERE for Test Photos.
The Lancer L5 model seemed to be the toughest magazine tested, and Fortier noted how the “old-fashioned” aluminum mags did surprisingly well. Lancer L5 magazines have “see-through” translucent polymer bodies (similar to Sig 55X series magazines). In addition, the Lancers feature teflon-coated, hardened steel feed lips, and a rubber-coated “bumper bottom”. Lancer L5s are offered in 20-round, 30-round, and 48-round capacities. The 48-rounder employs a special coupler to provide super-high capacity for 3-gun comps. Below is a Lancer-produced video showing the L5s being dropped from 5 feet (on both base and feed lips) without injury.
Fortier, posting on AR15.com concluded: “PMAGs are very good, but not as indestructible as some think. Aluminum mags are not as bad as some think. You should consider checking out Lancer’s mag…they surprised me. If MSARs mag dropped free they would be an interesting option. Dropping mags onto cement is A LOT tougher on them then running them over with a SUV…. but all those videos from the various mag companies sure did work wonders for advertising didn’t they?”
 Old Metal 20s — Still Best Match Mag?
Editor’s NOTE: I won’t speculate as to the best 30-round magazine for field and military use. But in all the ARs I’ve owned, and most of the AR target rifles I’ve shot, the best magazine for Bench use and High Power Match use was the old 20-round straight aluminum mag with silver-colored metal follower. These 45-year-old mags seem to work perfectly, even when the gray powder-coat has worn off in spots revealing a dull brass color underneath. The silver metal follower still works better than most of the new “no-tip” polymer followers.
There may be better 20-round polymer mags today, but match shooters won’t go wrong with the original metal-bodied straight 20s with metal followers. I’ve bought, sold, and traded many AR mags over the years — and my old GI metal 20s are the only ones I’ll never sell.
November 25th, 2009
Need a sturdy gun vise to hold your rifle for cleaning and work sessions? Cabelas.com has slashed prices on both its hardword and plastic gun vises. You can now save up to 50% on these handy work-stations.
Cabela’s simple but rock-solid hardwood gun vise (item 9IS-228063) is now marked down from $59.99 to just $29.99 — that’s 50% off the regular price. And — get this — the hardwood gun vise comes with a 31-piece screwdriver set, included in that $29.99 sale price. This hardwood vice measures 28″L x 8″W x 7.5″H and features four cut-outs for parts and small solvent bottles. The gun is secured in leather-padded cradles tensioned with a simple wood camming mechanism.
Cabela’s also has slashed the price of its polymer gun vise (item 9IS-227687). The polymer vise is now just $29.99, marked down from $49.99. That’s a great price for a versatile, light-weight (5-lb.) unit that can easily be moved around your shop. Cabela’s polymer gun vise features rubber padding at the front, rear, and under the pistol grip. The base has many small compartments and recesses for solvents and cleaning gear.
FREE Shipping on Orders over $99.00
In addition to the savings on these items, Cabela’s is currently offering FREE Shipping on all orders of $99.00 or more. This special savings is good through December 1, 2009. Use promo code 9CHRISTMAS at checkout.
November 25th, 2009
Free Recent Sample Issues to Review
Wolfe Publishing offers FREE, downloadable partial samples of the January 2010 issue of Rifle Magazine and the December 2009 issue of Handloader Magazine. (Note: these are fairly large, 4-5 megabyte .pdf files.) The Rifle magazine sample spotlights Volquartsen’s Evolution varminter. The Handloader sample issue has a nice story on Black Powder Cartridge Rifle (BPCR) Silhouette, plus a full feature on the unusual 22 Jet cartridge.
FREE Hard Copy Samples Also Offered
You can also order FREE sample hard-copy issues of Rifle Magazine, Handloader Magazine, and Successful Hunter magazine. You can request up to one (1) issue each. Just supply your name and address on the Hardcopy Sample Order Page. The full copies of recent issues are both worth a read. The latest issue of Rifle magazine has a good story on the Volquartesen Evolution varmint rifle. The Dec/Jan Handloader includes a fascinating “Cast Bullet Myth Busting” article, plus a guide to powders for the 220 Swift.
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