You can, of course, calculate the ballistic coefficient yourself, but why bother when the manufacturer tells you? Long range shooters have to practice, and they must have consistent ammo to practice. Available Calibers: 6mm, .257, 6.5mm, .277, 7mm, .308, and .338. On such heavy-bodied game animals, which are challenging to hunt and rarely offer a perfect broadside presentation, I'm a believer in using premium, heavy-for-caliber bullets. If you chase this rabbit down the hole it will lead you around the internet and sometimes confuse you, anger you, and then all of a sudden youll have a breakthrough. This Sierra Pro-Hunter is also a .308, 150-grain . 270, 7mm,. Mach number is the velocity of the bullet divided by the speed of sound. 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. Best Long-Range Hunting Cartridges of 2023 | Field & Stream This anonymous data helps us to better understand users' needs and customize the website accordingly. Punching holes in a target? .243" 100 grain Round Nose (BC .216): -1.5" @ muzzle, +4.8" @ 100 yards, +6" @ 200 yards, 0 at 300 yards, -15.9" @ 400 yards, -46" @ 500 yards. Its great for accurate target shooting. Kimber's Hunter Pro Desolve Blak takes the firm's more affordable mountain rifle to new heights. After spending some time with this database you will most likely find the bullet that best meets your needs. 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. One of the hallmarks of a great big game bullet is its ability to offer good terminal performance from very close range to long range. 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. Some manufacturers offer BC values at different velocity ranges. It doesnt pass through the air, or the animal, easily. 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. And when practicing @ a firing range, you want to use bullets designed for what you want to do; the bullet that gives you the best score shooting @ targets & the one that is best for hunting any particular animal will probably be quite different. The cookie is used to store the user consent for the cookies in the category "Analytics". There are three variables that determine a bullets speed on its way to the target: We explored the first variable, the initial speed of the bullet, in the last column. Hand-Picked Daily GUN DEALS, and Exclusive Coupons Codes >>>. These cookies ensure basic functionalities and security features of the website, anonymously. It's often been compared to the 6.5 Creedmoor. 30 Cal .308 178 gr ELD-X - Hornady Manufacturing, Inc Youtube - Track the views of embedded videos. In this case, the Form Factor becomes 1.0 and the BC equals the Section Density.Read more , This But that one- mile-plus first shot GONG is addictive!!! Many shooters choose 7mm cartridges for the potential of incredibly high BC bullets. It details drop, time, energy, velocity, range, and does so in . In actuality, the smaller caliber, lighter-weight bullet actually has a BC thats 28% higher than the larger caliber, heavier bullet. Ballistic Coefficient & Bullet Math : Long-Range Shooting Science .257" (.25) 100 grain, BC .369.257" (.25) 100 grain BT, BC .393, .277" (.270) 130 grain, BC .408.277" (.270) 130 grain BT, BC .449, .308" (.30) 165 grain, BC .433.308" (.30) 165 grain BT, BC .477. Instead search for the bullet on the top left using the search box or browse by rifle, or pistol using the links from the main menu. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Introduced in 1997, the .260 Rem. Oh, and because our two example bullets above have the same weight and diameter, hence the same frontal surface area, the sectional density numbers are the same: .226. Ballistic Performance of Rifle Bullets, 3rd Edition, 6.5mm (.264 Caliber) 144 grain Long Range Hybrid Target. As Sectional Density is a key input to Ballistic Coefficient, well look at that first. 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. When entering this stuff into your Kestrel or ballistic smartphone app, be sure to use the right BC number with its corresponding drag model. The 7mm caliber offers some of the highest BC bullets on the market. Newly Published base of comparison. Ballistic Coefficient is essentially a measure of air drag. This means that the speed and energy will vary from cartridge manufacturer to manufacturer. 50 bmg ballistic coefficient - 3wge.com The ACE Match is only available in one caliber, and you might be wondering why this bullet is even mentioned. The BC-enhancing polymer tip initiates expansion, and the LRX deforms with four razor-sharp petals that create a large frontal diameter. But the more streamlined bullets have a higher ballistic coefficient. No 168 grain .308 caliber bullet will have a high BC, simply because it is an awkward shaped bullet. To do this, bullets should be compared at a given Mach number (e.g. Ballistic Coefficient (BC) values at Mach 2.25 (2512 fps @ ICAO Standard Atmosphere) should be used when comparing to other published BC values within the industry. When this happens dont leave! of all the other stuff like rifle, ammunition and even reloading. Simply put, sectional density is the ratio of weight to the diameter of the bullet. Ballistics Test: The Best Big Game Bullets - RifleShooter This means you have the option to read your magazine on most popular phones and tablets. The Sierra GameKing has been cleanly killing critters for many years. With that said, the number the manufacturer gives you is a rough estimate. @StLPro2A: Youre not geeking out. There are actually several different standard projectiles with different measurements and they each measure drag in a different way. These bullets also feed very well from the detachable magazines being used by most long-range semi-auto and bolt-action rifles. The Standard projectile is the base we establish to gauge ballistic coefficient. Back in the day, guys with lots of time on their hands fired boatloads of projectiles to figure out how they behaved in flight. This website uses cookies to improve your experience while you navigate through the website. A quarter flying this way makes a lousy bullet, right? Ballistics Basics: Bullet Efficiency And Ballistic Coefficients, Gun Review: Nighthawk Border Special 1911, Classic Guns: The Ithaca Model 37 Shotgun. We cover this subject further in our next article, Form Factors. A bullet's efficiency is measured by its ballistic coefficient (BC). Groups shrank as small as .328" @ 100yds. e dont want slow bullets. What did this exactly mean? Mag. Compared to the current-issue service cartridges it's slated to replace like 5.56x45mm and 7.62x51mm, the .277 Fury offers greater energy, improved terminal ballistics and higher ballistic coefficient bullets that slip . Even their ammo is great. BC stands for Ballistic Coefficient. A Better Ballistic Coefficient | By Bryan Litz | Berger Bullets Blog Click below for a FREE LESSON! ELD-X stands for Extreme Low Drag eXpanding bullet. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. As for distances, I'd already decided to choose 50 yards as the close mark, and after some discussion the editor settled on a max of 400 yards- a long shot, for sure, but a range at which most accomplished riflemen can make clean, ethical hits from field positions. A bullets efficiency is measured by its ballistic coefficient (BC). 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. First Focal Plane vs. Second Focal Plane Scopes Explained: Which is Best? google_ad_slot = "7610963244";
But a higher ballistic coefficient doesnt necessarily mean it is a better bullet. There are lots of ways to describe what ballistic coefficient is. BC is measurement of how efficiently a bullet is able to cut through air . You dont have to worry about that as your ballistic software will deal with it. Luckily, there are, G1 or Ingalls (flat base with 2 caliber (blunt) nose ogive by far the most popular), G5 (short 7.5 boat-tail, 6.19 calibers long tangent ogive), G6 (flat base, 6 calibers long secant ogive), G7 (long 7.5 boat-tail, 10 calibers tangent ogive, preferred by some manufacturers for very-low-drag bullets), G8 (flat base, 10 calibers long secant ogive). was better than the .30-06 because it bested that venerable round by another 300 fps. Note that in the .308 pair, the heavier bullet (which has the greatest sectional density) has the better BC. Very helpful! His latest projects include an online course to help people get an FFL (. In general, heavier and larger caliber bullets have higher BCs than smaller calibers, but not always. Manufacturers might be tempted to advertise high BCs for their bullets, and the comparison to the drag model is more complicated than I made it out to be and actually changes with speed. This is done so you have an accurate number that represents the bullets performance over long range. The boat tail helps, but not nearly as much as the point on the front of the bullet. Heres why. Item #3074 | 100/Box. 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. Under the tutelage of Walt Bergerone of the best bench-rest shooters of all timeBerger Bullets established a reputation for creating some of the most accurate bullets ever produced. The Best Bullets for Long Range Precision - Dark Earth Tactical The Ballistic Coefficient of Rifle Bullets. 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. Part of that consistency is having the same powder charge, same projectile, same rifle, and, of course, the same BC. The Remington Model Seven is ready, willing and able to handle just about any task. #4. How to choose one of the myriad premium bullets available today?
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