In this article, Bryan analyzes the design of long-range bullets, from .22 to .30 caliber. He notes that while 30-caliber bullets can have very high ballistic coefficients, 30-caliber bullets must be very heavy to match the BCs of the 6.5mm and 7mm projectiles. As the chart below shows, it takes a 240gr 30-caliber bullet to match the G7 BC of a 180gr 7mm VLD. But most 30-caliber shooters don’t use those ultra-heavy projectiles because the recoil is excessive and because it takes a monster cartridge burning lots of powder to drive 240-grainers to optimal velocities. Litz notes: “Heavy recoiling rifles are harder to shoot accurately. Even if a shooter overcomes the mental aspect of heavy recoil, the ‘system’ is more sensitive to minor imperfections in shot execution. This may be another reason that drives .30 cal shooters down to the ‘middleweight’ 190-grain class bullets instead of the proportionally heavy 220-240 grain bullets.”
Litz concludes that the heavy 7mm bullets are a better choice than the biggest 30-calibers (except in unlimited weight “heavy guns” where recoil is not a factor.) Bryan writes: “Even a moderate 7mm chambering is capable of delivering 2800 to 3000 fps with the heavy 7mm bullets, much faster with magnums. The heaviest .30 cal bullet requires a big magnum just to get to 2800 fps. So the first problem is: you can’t get the heavy .30 cal bullets going as fast as the heavy 7mm bullets! Even if you could get the same muzzle velocities from the heavy .30 cal bullets, it would take much more powder to do it, barrel life would suffer, and you’ve only achieved parity with the 7mm. The various negative effects of the incredible recoil are really just the ‘nail in the coffin’ for the heavy .30 caliber bullets.”
Bryan’s Updated Second Edition Ballistics Book
If you are interested in learning more about bullet design and ballistics, check out Bryan’s book, Applied Ballistics for Long Range Shooting. This highly-respected resource, now in its second edition, includes experimentally-measured Ballistic Coefficient (BC) data for over 236 long range bullets of various makes. The new edition of Applied Ballistics was upsized to 7″x10″ and Bryan added two new chapters, while updating the existing chapters. Bryan’s book comes complete with a CD containing Version 2.0 of the Point Mass Ballistics Solver. CLICK HERE to order Litz’s book and CD for $49.95.
OutdoorsTrader.com is a FREE alternative to Gunbroker.com and AuctionArms.com for selling firearms, magazines, optics, and hunting gear. Set up like a Craigslist for gun stuff, OutdoorsTrader.com lets you place free ads for buying, selling or trading guns, ammunition and parts. Conveniently, you can search ads by state, or even by zip code proximity.
Because OutdoorsTrader.com is relatively new, there are relatively few listings at present, but we expect that to grow. We clicked on “Oregon” and found a couple dozen listings, mostly handguns. A search for “Colorado” revealed a half-dozen listings, half rifle, half pistol. So OutdoorsTrader.com has a long way to go to challenge the big players such as Gunbroker.com and AuctionArms.com. But we’re glad OutdoorsTrader.com exists — it’s always a good thing for consumers to have more options.
OutdoorsTrader Charges No Fees, Unlike Gunbroker
We hope OutdoorsTrader.com becomes successful. Gunbroker.com is fairly expensive for the seller, who pays when the item sells (at auction). On an expensive rifle, Gunbroker.com fees can be significant. The cost to sell a $3500.00 rifle on Gunbroker.com is $56.88.
By contrast, OutdoorsTrader.com is free to join and entirely free to use. Once an account has been created, the user may post ads of his own and also leave replies on other posted ads. OutdoorsTrader.com has been around for a couple years. We hope it gains in popularity so it can provide more competition to Gunbroker.
Smallbore competitors — mark your calendars for July 15 through July 19. That’s when the 2011 NRA National Metric Smallbore Championships will be held at the Wa-Ke’-De Range in Bristol, Indiana. Practice Relays will be held on the 15th. With Position shooting scheduled for July 16-17 and Prone for July 18-19, this event is a great way to tune up your marksmanship skills prior to the Smallbore Championships at Camp Perry which kick off on July 21st.
The Second Annual NRA Metric Smallbore Championships are limited to the first 200 competitors. You can still register now by contacting H.Q. Moody at 703-267-1475 or HMoody@nrahq.org. Don’t procrastinate — anyone attempting to sign up after July 8th will have to do so at the Statistical Office at the Chief Wa-Ke’-De’ Range. The Jameson Inn in Elkhart, Indiana is the host hotel. Mention the National Metric Championships to receive a special rate.
Powder Valley Inc., one of our favorite vendors of powder, primers, and other reloading components, is offering a great Independence Day Deal. If you order online on the 4th of July, you will get 10% off the cost of your entire order. That’s right — 10% off everything you order. But note, this is a one-day deal only. Orders must be placed via the web on the 4th of July, between the hours of 12:00 AM and 11:59 PM Eastern Time.
Powder Valley 4th of July Sale
In celebration of our great nation and independence!!! 24 Hour Special Only — CLICK HERE
10% off entire order placed online on the 4th of July.
Order must be placed online between the hours of 12:00 AM and 11:59 PM EDT July 4, 2011. It is best to place your order using Internet Explorer. Only orders completed during these hours will receive a 10% discount. NO EXCEPTIONS! Note: this does not apply to Hazmat fees or shipping charges.
USA Shooting is pleased to announce that 2008 Olympian Jamie Beyerle (Lebanon, Pa.) has qualified for a nomination to the 2012 U.S. Olympic Team pending approval by the United States Olympic Committee. Upon approval, Beyerle will be competing in her second consecutive Olympic Games in Women’s 50m Rifle Three Position. At the 2008 Olympic Games in Beijing, Beyerle finished fourth in Women’s 10m Air Rifle and fifth in Women’s 50m Rifle Three Position. Beyerle is currently the top-ranked Women’s 50m Rifle Three Position shooter in the world. In 2011, Beyerle won gold at ISSF World Cup events in Sydney, Australia and at her home range in Fort Benning, Georgia. In the ISSF video below, you can watch Jaimie’s winning performance in Sydney:
National Rifle Coach Major Dave Johnson said, “Jamie has continued her march to the top of our sport. In the last 12 months, Jamie has earned three gold medals in World Cups and placed in the top five in two more starts. Her performance has earned her a spot on the U.S. Olympic Team as one of the best in the world.” Jaime credits Johnson and the USAMU for much of her success: “It is an honor to be nominated to represent the United States in the 2012 Olympic Games. I would not have that honor without the support of USA Shooting and Coach Dave Johnson as well as the U.S. Army Marksmanship Unit and Coach Tom Tamas, who have all helped me to achieve my goals thus far.”
Readers in the Rockies region should head to the Colorado Rifle Club (CRC) range tomorrow July 2, 2011, from 9:00 am to 4:00 pm. There you can try out a variety of Savage rifles, and the ammo is FREE! Can’t beat that. This July 2 “rifle test-ride” at CRC is part of Savage’s innovative Arms Club Program, which provides sample rifles to clubs around the country. There, potential rifle buyers can try out target rifles, hunting rifles, both centerfire and rimfire at no cost.
Savage Arms provides the rifles, Nikon supplies the optics, and Hornady provides free ammo for testing. Caliber options include .17 HMR, .223 Rem, 6.5 Creedmoor, .308 Win, and .300 Win Mag. If you have not shot Savage’s F-T/R or Law Enforcement Series rifles, now is your chance. We also recommend Savage’s 93 R17, a .17 HMR rimfire with the look and feel of full-size centerfire rifle. The 93 R17 we tested last year was very accurate and we liked the look and feel of the matte-black tactical-style stock.
Directions: The Colorado Rifle Club range is located at 76099 East 96th Ave., Byers, CO 80103. Byers is 40 miles east of Denver on l-70 at exit 316. To get to the range, travel 8 miles east of Byers on U.S. 36, then about 9 miles north on Leader Road (52N), then one mile west on 96th Ave. to the range gate, then one mile north to the ranges. CLICK HERE for map to CRC range.
Latitude and Longitude: 39° 52′ 12.58″N, 104° 05′ 39.47″W
Editor’s Comment: Savage deserves praise for its new Arms Club Program. Bringing rifles to popular ranges is a great way to introduce new shooters to the sport. Letting range visitors sample an accurate target rifle (something they may not have tried before) can also help convert pistol shooters and shotgunners into avid rifleman.
Norma has updated and enhanced its website at www.norma.cc/en/ (the ‘en’ is for English version). Among the many new site features is Norma’s “Ammo Academy”, a technical resource that provides information on: Ballistics, Powder Storage, Barrel Wear, and Bullet Expansion. In addition, the Ammo Academy now links to Norma’s Reloading Data Center, where you’ll find loads for nearly 70 cartridge types including: .223 Rem, .22-250, 6mmBR Norma, 6XC, 260 Rem, 6.5-284, 6.5×55, 7mm-08, .270 Win, .284 Win, .308 Win, .30-06, 300 Win Mag, .338 Lapua Mag and dozens more.
The Ammo Academy’s Ballistics section contains some fascinating technical facts:
After the trigger is pulled, it takes around 0.005 seconds before the firing pin reaches the primer.
From the firing of the primer it takes 0.0015-0.002 seconds until the bullet exits the muzzle.
When the bullet leaves the muzzle, the hot gases surround and overtake the bullet, continuing the acceleration for a few centimeters.
Because the barrel is always angled slightly upwards, the bullet’s flight starts about 3-5 cm below the line of sight.
Norma also offers some good advice about Powder and Cartridge Storage:
To maintain the product quality for as long as possible, you have to keep the powder in a suitable place under suitable conditions. Where possible, store the powder at a constant temperature, ideally between 12 and 15°C (54°F to 59°F), and a relative humidity of 40–50%. If the air is too dry, it will dry out the powder, which will cause the pressure to be higher, thus affecting performance. Also make sure that you close the powder container properly afterwards. Cartridges should be stored under the same ambient conditions to maintain their quality.
Litz concludes that the heavy 7mm bullets are a better choice than the biggest 30-calibers (except in unlimited weight “heavy guns” where recoil is not a factor.) Bryan writes: “Even a moderate 7mm chambering is capable of delivering 2800 to 3000 fps with the heavy 7mm bullets, much faster with magnums. The heaviest .30 cal bullet requires a big magnum just to get to 2800 fps. So the first problem is: you can’t get the heavy .30 cal bullets going as fast as the heavy 7mm bullets! Even if you could get the same muzzle velocities from the heavy .30 cal bullets, it would take much more powder to do it, barrel life would suffer, and you’ve only achieved parity with the 7mm. The various negative effects of the incredible recoil are really just the ‘nail in the coffin’ for the heavy .30 caliber bullets.”
Powder Valley 4th of July Sale
