Long range shooters have to practice, and they must have consistent ammo to practice. This cookie is set by GDPR Cookie Consent plugin. is both capable and popular, especially on the heavy-bodied game where bullet performance becomes critical. Travis Pike is a Marine infantry veteran, firearms enthusiast, and NRA certified instructor. Mach 2.0 (2,233 fps @ ICAO Standard Atmosphere) and Mach 1.75 (1,954 fps @ ICAO Standard Atmosphere) BC values are also available. RELATED: Heavey Gets Schooled in Long-Range Shooting at Gunsite Academy. It's often been compared to the 6.5 Creedmoor. It wasn't hard to choose a bullet diameter and weight and a cartridge through which to test it: America is still a .30 caliber nation; 180-grain projectiles typically offer excellent sectional density and ballistic efficiency; and the .300 Win. In this comparison, the 6.5mm 144 gr bullet has a G7 BC of 0.336, while the 30 cal 175 grain OTM has a G7 BC of 0.263. He is a well-known entrepreneur, having started many successful online brands, and lives in St George, Utah. A bullet's ballistic coefficient is calculated by a model based off its density and shape. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Conversely, it's not that difficult to produce a bullet that will hold together at close-range, high-impact velocities, but the heavy jackets, harder lead-alloy cores and bonding processes used to create such bullets can inhibit expansion when distances stretch and velocities drop. This aerodynamic tip enhances the bullets ability to resist gravity and wind, and it ultimately reduces flight times. Mag. Available Calibers: 6mm, 6.5mm, .277, 7mm, and .308. There are a few things you need to understand in order to make a valid comparison. The only homogeneous bullet included in this test, the, A unique crossover design featuring a solid copper base and a bonded, lead-core front half, the, One of three boattail, polymer-tipped, bonded bullets included in this test, the, Known for superb accuracy and dramatic on-game performance, the, A tougher, bonded version of Remington's much-loved Core-Lokt bullet, the, Second only to the Barnes TTSX at retaining weight, the, Offering higher-than-average BCs, even for boattailed, polymer-tipped bullets, coupled with heavy-jacketed, bonded construction, the. Getting consistent hits at extreme distances requires specialized rifles and optics. The definition according to Wikipedia is, "the ballistic coefficient (BC) of a body is a measure of its ability to overcome air resistance in flight.". presaged the 6.5mm frenzy. If more than one bullet shoots equally well, then choose the one with the higher BC. Not so long ago a Barrett or Cheytac was needed at a high price for shots out to a mile+. In the world of ballistic coefficients, a bigger number means that a bullet flies more efficiently. There are lots of ways to describe what ballistic coefficient is. Simply put, sectional density is the ratio of weight to the diameter of the bullet. bullets). Articles may contain affiliate links which enable us to share in the revenue of any purchases made. A list of pointed (spitzer type) hunting bullets considered a good bet for long range shooting in their respective calibers, with their ballistic coefficients, follows. Notify me of follow-up comments by email. Heck, few whitetails, antelope, mule deer and even average black bears measure much more than 12 inches broadside through the vitals. The higher the number the less drag, and the more efficiently the . google_ad_slot = "7610963244"; This cookie is used to keep track on user informations and reports it to Alexa analytics service. A bullet with a high ballistic coefficient is slippery and less subject to drag (slowing down) as it continues on its merry way. Spitzer, which means pointed, is a more efficient shape than a round nose or a flat point. This cookie can only be read from the domain they are set on and will not track any data while browsing through other sites. For example, consider a smaller caliber like a 6.5mm (.264 Caliber) 144 grain Long Range Hybrid Target thats relatively heavy for its caliber, compared to a larger caliber bullet like a .308 Caliber 175 grain OTM which is absolutely heavier, but is relatively light for its caliber. The cookie is set by crwdcntrl.net to collect statistical data such as the number of visits, average time spent on site, and what pages have been loaded, for targeted advertising. This is a much bigger problem with G1 BCs than G7, but there is always some velocity dependence involved in using BCs. The ELD-X (Extremely Low Drag - eXpanding) bullet is a technologically advanced, match accurate, ALL-RANGE hunting bullet featuring highest-in-class ballistic coefficients and consistent, controlled expansion at ALL practical hunting distances. Love your simple explanations. Inspired by Bob Beck, the host of the TV show Extreme Outer Limits, the Berger EOL was designed by noted ballistician and bench-rest shooter Bryan Litz. The higher the number, the less drag the projectile will experience. Ballistics Coefficients - Rifle 1450 .224 50 BlitzKing .142 .248 @ 3300 fps and above.243 between 2650 and 3300 fps .232 between 2050 and 2650 fps . The ACE Match is only available in one caliber, and you might be wondering why this bullet is even mentioned. /* GunData.org Ballistics */ All BCs (G1 and G7) advertised by Berger Bullets are averaged from 3000 fps to 1500 fps. Note that with bullets of the same weight and style, such as the 100 grain .243" and .257" bullets or the 150 grain .311" and .323" bullets, the smaller diameter bullet always has the superior BC due to its better sectional density. Hornady A-Tip. The goal was to be able to predict how far projectiles would travel, the arc of flight, and at what velocity they would impact targets. Another thing to keep in mind when comparing BCs is related to caliber. Both can be launched at the same speed, but an arrow will fly farther because it doesnt slow down as much due to wind resistance and therefore maintains its speed better. To illustrate the practical difference between these three styles of bullets, let's use Hornady's trajectory figures for the 100 grain 6mm bullets above. Making those long range shots past a 1000+ nice! The BC of a bullet is a ratio calculated by a mathematical model based off of its density and its particular shape. An interesting subject, this ballistic coefficient, and worth paying attention to when you select a bullet (or a caliber) for long range shooting. We hate SPAM and promise to keep your email address safe. These bullets have extremely high BCs. In actuality, the smaller caliber, lighter-weight bullet actually has a BC that's 28% higher than the larger caliber, heavier bullet. The cookie is used to store the user consent for the cookies in the category "Performance". @StLPro2A: Youre not geeking out. The pattern element in the name contains the unique identity number of the account or website it relates to. Before you get into all the calculations, answer this question: what do you want the bullet to do when it hits what you're shooting at? This difference in the two BCs for the same bullet is because an efficient bullets performance will be much better than the G1 model and only slightly better than the G7 model. Someday maybe Ill have the time and money to play in the long range sweepstakes game one friend is regulalry hitting his targets at 800 yards, and often at 1000 yds.. me, Im happy at present if I can hit at a couple hundred yards Need more range time. Hunters who choose a 195 Berger EOL hunting bullet compared to a 140gr Nosler Accubondeven if both bullets are shot at 2,800fps would see 6 less drop and 8 less wind drift at 500 yards. However, you may visit "Cookie Settings" to provide a controlled consent. The boat tail helps, but not nearly as much as the point on the front of the bullet. It delivers smaller BCs but is consistent throughout the velocity of the round, giving you a much more accurate representation of BC. BC is a number that can be used as an input for ballistic solvers to predict trajectories. The __gads cookie, set by Google, is stored under DoubleClick domain and tracks the number of times users see an advert, measures the success of the campaign and calculates its revenue. Hes a lifelong shooter who just happened to be mediocre enough with a gun and a keyboard to combine the two and write. All of the figures that follow are taken from the Speer Reloading Manual Number 13. RELATED: 10 Best Long-Range Hunting Cartridges. Beth Shimanski of Savage introduces their all new straight-pull rifle. Type your email address and well send All three of these bullets have a sectional density (which is the ratio of a bullet's diameter to its weight) of .242, because they are all .243" in diameter and weigh 100 grains. Subscriber Services. No math just brute force raining down pain. Weight Bullet Sectional Ballistic Coefficients # (inches) (grains) Type Density and Velocity Ranges Sierra The Bulletsmiths TM TM. 2023 Backfire LLC, a limited liability company headquartered in Utah, USA, 195gr Berger Extreme Outer Limits (EOL) Elite Hunter. But opting out of some of these cookies may affect your browsing experience. Simply, the faster one starts out, the more remaining velocity it will have at the target. Select what level shooter you are! Their Hybrid Target design incorporates two different shapes within its nose. There are actually several different standard projectiles with different measurements and they each measure drag in a different way. Mathematically, it is the ratio of a bullet's sectional density to its coefficient of form. Sign up to receive new product announcements, special offers, and the annual product catalog. For BC calculations, the shape of a bullet is compared to pre-determined drag models. The two most common drag models are G1 and G7. Thats where it started, and since then its gone from simple experiments all the way to engineers and scientists at places like Aberdeen Proving Ground working to improve ballistic calculations. Until now. A high BC bullet can maintain velocity better than a low BC bullet under the same conditions. guns & Ballistic coefficient (the measurement of how easily the bullet passes through air) is a critical part of the equation, as well. At the peak of the market-hunting era, waterfowlers We interviewed fourth-generation master flintlock rifle maker John From forcing cones to action bars, here's a Sign up for the Field & Stream newsletter and get the latest intelligence straight to your inbox. Richard Mann These variables, which well discuss in the next column, can change each time and location you shoot. The cookie is used to store the user consent for the cookies in the category "Other. Even their ammo is great. It details drop, time, energy, velocity, range, and does so in . This will support more accurate trajectory predictions, including wind and drop predictions. Variation in BC with Velocity (G1, G7, etc), Manufacturing Effects on: BC, Accuracy, and Precision. That boils down to more complex factors like shape, length, and weight distribution. If a bowling ball was used for the drag model, the BC would be very high because the bullet would be much more efficient as it flew through the air. The cookie stores information anonymously and assigns a randomly generated number to recognize unique visitors. Terminal Ascent will be available in a wide range of cartridgesincluding the 6.5 Creedmoor, 6.5 PRC, .270 Win, .270 WSM, .280 Ackley Improved, 28 Nosler, 7mm Rem. While factory .22 LR round-nose bullets have BCs in the 0.072 to 0.149 range for bullets of 26 to 40 grains started at typical low .22 LR velocities, the Cutting Edge bullets come in at only about 0.111 (G1 BC), according to the company's president, Dan Schmitko. Not really. This anonymous data helps us to better understand users' needs and customize the website accordingly. COURSES. To grossly abuse math and physics, bullets with high sectional density are long and skinny. It is accurate, has an excellent ballistic coefficient, and provides moderate recoil. Granted, for 80 percent or more of the game (whitetails) shot by Americans, bullets don't really need to hold together and penetrate particularly deeply to provide clean, humane kills. Google DoubleClick IDE cookies are used to store information about how the user uses the website to present them with relevant ads and according to the user profile. Absolutely not. Click below for a FREE LESSON! For this example, I am going to use a Hornady 30-06 Springfield load with a 125 grain SST projectile, found here. Adding more tin, the weight can go down to 545gr from the same mold. gear. So are barrel twist and length. Whats New And What Really Matters In Bullet Design, 8 On-Target Concealed Carry Insurance Options (2022), 10 Affordable Double-Barrel Shotgun Options (2023), Best AR-15 Options For Any Budget And Buyers Guide (2023), Best Concealed Carry Handguns For Women (2023). 600 Rounds Winchester 5.56 55Grain XM193 FMJ Stripper Clips & Tool $240.00 FREE S&H REBATE, AR-15 Barrel Length Does It Even Matter? Introduced in 1997, the .260 Rem. If you are looking to hit a target beyond 600 yards, your really need to learn and understand your rounds BC. Instead, the BC is best used as a comparative number between different bullets. Originally, those smart people who did a lot of testing on the range worked out predictive models for bullet flight based on that standard projectile shape. Drag slows a bullet down, and we dont want slow bullets. I do not know how I could have possibly left out Lapua bullets. As Hornady moves the industry to drag coefficient based trajectory calculations for these types of projectiles, the Ballistic Coefficient is becoming somewhat irrelevant. But a higher ballistic coefficient doesnt necessarily mean it is a better bullet. Heres what you need to know about drag models. Ballistic coefficient (BC) is a mathematical representation of how efficiently a bullet flies through the air. This Sierra Pro-Hunter is also a .308, 150-grain . Some of the data that are collected include the number of visitors, their source, and the pages they visit anonymously. In each pair, the first bullet has a flat base, and the second has a boat tail. This website uses cookies to improve your experience while you navigate through the website. gives us a very small window of the projectile/bullet's ability to overcome external factors such as wind and gravity. Learn more . Vimeo installs this cookie to collect tracking information by setting a unique ID to embed videos to the website. For example, a Hornady 100 grain round nose 6mm bullet has a BC of .216; a Hornady 100 grain spire point 6mm bullet has a BC of .357, and a Hornady 100 grain boat tail spire point 6mm bullet has a BC of .400. If a Mach number is unavailable, velocity can be used if the BCs are corrected to Standard Atmosphere which is fairly typical practice within the industry. I just returned from the range today and found out some interesting stuff about b.c. You do not pay USA -(Ammoland.com)-Heres why obscure [and some say boring] bullet ballistic concepts like ballistic coefficient and sectional density are essential if you want to hit targets regularly when shooting at long-ranges. Sierra MatchKing bullets have a worldwide reputation for stellar accuracy and have probably won more target competitions than all other bullets combined. Get Our Top Shooting Drills and Zeroing Targets ($47 value - but FREE for a limited time). For the last several years, Hornady has developed some of the best long-range bullets on the market. The higher the BC, the less drag on the bullet. Technically, its the ratio of the weight to the surface area, but its easier to think in terms of diameter as thats how bullets are measured. How to choose one of the myriad premium bullets available today? During this time of overwhelming demand, our team is doing everything possible to produce more bullets and ammo than ever before. Ballistic Performance of Rifle Bullets, 3rd Edition, 6.5mm (.264 Caliber) 144 grain Long Range Hybrid Target. Save my name and email to use for future comments. Article No. Out of curiosity, how do you calculate the bc? Copyright 2001, 2013 by Chuck Hawks. The cookie is used to store the user consent for the cookies in the category "Analytics". Ballistic Coefficient is a bit of a new word when we look at the history of physics. Mag., .308 Win, .30-06, .300 Win. Mag., and .300 WSM.and as a component for handloaders. The G7 drag model, which is gaining popularity, is based off of a more aerodynamically shaped options with a boat-tail base (it tapers back). | This website uses cookies and third party services. G1 (flat base with two caliber (blunt) nose ogive), G5 (short 7.5 boat-tail, 6.19 calibers long tangent ogive), G6 (flat base, six calibers long secant ogive), G7 (long 7.5 boat-tail, ten calibers tangent ogive), G8 (flat base, ten calibers long secant ogive). Long range shooting absolutely fascinates me. Red Oak, White, or Chestnut for Deer Herd? Mag. It's like the humpty-dumpty or weeble of the .308 bullet world. The ability to know, in advance, how much a bullet will drop or drift in the wind at a certain distance allows you, the shooter, to make scope holdover adjustments that will increase the odds of you hitting your target. Ballistic Coefficient (BC) is basically a measure of how streamlined a bullet is; that is, how well it cuts through the air. We also use third-party cookies that help us analyze and understand how you use this website. BC is mostly used by rifle shooters. Almost any bullet can be made to expand at long range, but the thin jackets and soft cores that promote such expansion don't support bullet integrity when impact distances are close and velocities extremely high. There is a pretty big difference in trajectory between the round nose bullet and the two pointed bullets, making it obvious why it is folly to choose a round nose bullet for long range shooting with a high velocity rifle like a 6mm Remington or .243 Winchester. And stay in touch with newsletters of our best articles on techniques, guns, & gear. Its great for accurate target shooting. BC will help you determine the effective range of a projectile by taking drag into account. There is a large push among long-range experts to move the industry to the G7 projectile. Data are also found in the accompanying charts. shoots flat, hits hard, and fits in standard length actions. So for purposes of flying through the air efficiently, the bigger the BC number the better. In the end, the best way to understand the performance comparison between two bullets is to enter their details into a ballistic solver including the muzzle velocity, and see how the predicted drop and drift compare, all things considered. It starts as a secant ogive like their famous VLD bullet, but as you move toward the bearing surface, the bullet changes to a tangent ogive. It does not store any personal data. AccuBond Long Range bullets will hold up to extreme, high-velocity impacts at close range, and still deliver expansion and penetration at crazy long distances. As Hornady moved into production of these bullets, the BC value increased (a positive gain) due to the improvements in the manufacturing process from R&D to production machinery. How much a bullet slows down depends on the density (thickness) of the air and the efficiency of the bullet. BC stands for Ballistic Coefficient. A decent BC for a bullet based on the G1 drag model is in the 0.5-0.6 range, whereas the same bullets BC based on the G7 drag model will be in the 0.2-0.3 range. When entering this stuff into your Kestrel or ballistic smartphone app, be sure to use the right BC number with its corresponding drag model. e dont want slow bullets. I dont see how a BC can be constant for varible velocities over a given trajectory. Available Calibers: 6.5mm, .277, 7mm, .308, and .338. This is shown by the smaller difference in BC between the two pointed bullets, .357 for the flat base and .400 for the boat tail. A more efficient bullet will maintain its speed better, and its not affected as much by the environmental variables.
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