This energy has the advantage at longer distances and the .308 doesn’t drop as far as the .223 past 500 yards. I ran a couple scenarios though my calculator... Geco chronos at 2967 out of a 16" barrel. I've thought about how to go about this, although I'm not interested in shooting my AR's beyond 300 yards. Red Oak, White, or Chestnut for Deer Herd? So what does the charting of the .223 remingtons external ballistics tell us exactly? I shot the NMC course with a Colt HBAR using the 68 grainers, using the Win 748 and miSPec cases. It helps if you can chronograph your load so you know exactly what your average velocity is for your ammo and your rifle. The simplest thing to do is to use one of the many ballistic calculators available online. A Some time in the future I'm going to try my AR15 at 600 yds. That way, the bullets will hit somewhere below the point of aim, and you can see how much.". © Copyright GunData.org 2015  |  Koenig Media, LLC   |   Links   |   Sitemap   |   Advertise. Gravity is not the only thing acting on your bullet however, there is also the air. This energy has the advantage at longer distances and the .308 doesn’t drop as far as the .223 past 500 yards. With the popularity of the AR platform and the .223/5.56 round I thought it would be a good idea to review the trajectory of the round and common sighting ranges. This email link is to reach site administrators for assistance, if you cannot access TFL via other means. We had to radio back to get him disqualified, as it was too dangerous. Gravity exerts more force on a heavier bullet and pulls it down faster. On any rifle the sights are some distance above the bore line which has a slight upward angle (the height of the sights is another factor to consider). I will start with the assumption that everyone gets the concept of gravity. For the rest of us just sight your AR in at 50 yards and leave it alone. Depends on the velocity, shape of the bullet, and where the rifle is zeroed. If you are a TFL member and can access TFL, please do not use this link; instead, use the forums (like Questions, Suggestions, and Tech Support) or PM an appropriate mod or admin. It will a produce a line graph showing the bullet drop and flight path of the bullet. Barrel length is another factor that affects velocity. The charting shows the range, drop (based off a 1.5" scope mount), current velocity, energy, and time in seconds in relation to the bullets movement through space and time. The weight of the bullet is another factor. In this chart I lowered the velocity to compensate for a 20 inch barrel instead of the 24 inch barrel listed: The lesson here is that if you need precision at medium distances or just want to hit a target at longer distances, you need to know exactly how your bullet will perform. If you don’t then have a friend throw apples at your head until you do. In shooting, the second the bullet exits the barrel gravity takes hold and starts to pull the bullet down towards the ground. Has anyone figured out the angle of departure (the angle of the rifle barrel relative to the horizontal) needed to make that shot without holding over and whether the rifle sights can be raised to that point? Here's my past results using Geco 55g ammo: Yards Drop 100 zeroed 200 -4.5" 300 -14" 400 -30" What should I expect at 600 yds? About 14 minutes from 100 yard zero. The typical test length for barrels can be 24 inches so if you are using a 16 inch barrel carbine you need to deduct about 400 FPS. Based off a standard 55gr bullet leaving the barrel at 3,215fps and follows the bullet trajectry all the way to 1000 yards in steps of 50 yard increments. The shorter the barrel the less velocity you get. This is a .223 ballistics chart (external) generated using our ballistic trajectory calculator. Pick a rifle and pick a load, and stick with it. Knowing your distance and bullet performance for your specific load will allow you to make the needed changes on your scope or simply to hold over. In fact the bullet drop and performance is about the same as for the .223 round fired from a carbine, but of course the .308 has a lot more energy. The faster it starts the longer it stays airborne. For example in this chart I lowered the velocity to compensate for a 16 inch barrel instead of the 24 inch barrel listed: At 500 yards you lose almost the entire height of a person and even at 200 yards the bullet is 3.2 inches below the point of aim. Joined Jan 2009; Posts 331; EE Offline; KS, USA . Finally you have to consider the initial velocity of the bullet. The Ballistic Coefficient for the .223 Remington, Remington Metal Case, 55gr is 0.202 (in this example) but, but may also range from .185 bc to .257, A At short distances the bullet will impact below your point of aim then travel upwards and intersect the point of aim at the distance where you sighted in then start to drop. Thanks _____ Fast is fine, but accuracy is everything. This is a .223 ballistics chart (external) generated using our ballistic trajectory calculator. Using Hornady's BC I calculated both 100 yd zero and what I use, 200 yd zero. .223 Remington, These calculators are also available as apps for smart phones: http://www.hornady.com/ballistics-resource/ballistics-calculator, http://www.winchester.com/learning-center/ballistics-calculator/Pages/ballistics-calculator-silverlight.aspx. It says that at around the halfway point of 500 yards the bullet will have slowed to less than half of its original velocity, lost 1000 ft pounds of energy (now pushing just 207 lbs), and dropped due to gravitational forces some 64 some inches, and all of this in just a fraction of a second (.741 of a second). Using standard military FMJ 150 grain ammo from a 20 inch barrel rifle you only drop 4.3 inches at 200 yards. 600 yards shooting, even in competition, is a single load affair (no need for cartridge to fit in the magazine), so there's no eed to compromise. That is actually not correct. Being a high velocity round the trajectory is relatively flat within a few hundred yards – past 400 the drop-off is significant. Real snipers also have to consider elevation, angle, wind speed and wind direction, humidity and temperature. Accepting those figures as given, a 102" drop is 8.5 feet, which means that to hit a deer size target at 600 yards, a hunter would have to aim at a point 8 feet over his back. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. It turns out that zeroing a .308 AR at 50 yards works just as well. Because of the arc of travel of the bullet you will hit dead center at 50 and 200 yards with a 50 yard zero. You can expect between 110 and 125 inches of drop at 600yds. Remington Metal Case, 55gr. If you are a tactical shooter and just looking to hit a man-sized silhouette at intermediate ranges (out to 300 yards) your worries are minimal. The situation is worse for a 62 grain .223 FMJ bullet since the higher weight also reduces muzzle velocity to around 2,700 FPS. Thumb image courtesy of Wikimedia Commons. This is why when you are shooting at various distances it is important to know the distance and know how far your bullet will drop so that you can compensate. Such emails will be ignored. Hmmm. Yea, it is probably transonic at 600 yds which may be pretty unstable with this type of bullet. At 500 yards you hit 72.2 inches (6 feet) low and at 1,000 yards it is 549.3 inches low or more than 45 feet. This chart does not account for atmospheric conditions, so if you want to take in to effect these things check out the calculators official page. This email contact address is not an "Ask the Firearms Expert" service. Based upon a 55gr bullet with a mv of 2800 fps here's the energy breakdown: Old thread but just want to reference that the extreme drop you were experiencing at 200yds is due to your zero at 100yds. GravyTrain61. This load at 1,000 yards drops 480.2 inches (five feet less than the .223 above). In fact the bullet drop and performance is about the same as for the .223 round fired from a carbine, but of course the .308 has a lot more energy. You should never zero at 100yds your trajectory will be too flat and result in massive drop. If you are experiencing difficulties posting in the Buy/Sell/Trade subforums of TFL, please read the "sticky" announcement threads at the top of the applicable subforum. How to Sight in a Scope - Step by Step Guide. Add to all of this any cross winds and unless you really know what you are doing, you may as well be throwing rocks. Based off a standard 55gr bullet leaving the barrel at 3,215fps and follows the bullet trajectry all the way to 1000 yards in steps of 50 yard increments. The popular advice is to sight your .223 AR at 50 yards and you will be zeroed in at 200 yards as well. The longer the bullet is in the air, the further down it will travel as well. But don't waste your time with a 55 at 600, we had one guy shoot a highpower match, his 55 FMJ loads were actually bouncing off the target frames back into the pitts at 600 and were all over the place. Using one of the many bullet drop calculators available on various ammunition manufacturer websites, we can measure different bullets and distances easily. Past that it starts to matter, and it matters a lot if you are a hunter or otherwise need to make a precision shot. On a .223 AR you lose about 50 FPS for every inch of barrel you take off. "I would make my best guess on scope adjustment, but use a piece of long paper, like wrapping paper or butcher paper. 223 bullet drop at 600 yds? To keep things simple lets stick with standard 55 and 62 grain FMJ military loads. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. Some time in the future I'm going to try my AR15 at 600 yds. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. It will a produce a line graph showing the bullet drop and flight path of the bullet. If you zero that in at 50 yards, it will hit 4.2 inches low at 200 yards. Put your aim point at the top, and make the target about 8 feet high. Obviously, this is just gun fun, I doubt the 223 has much energy left way out there. You want to either zero at 25-30yds or 50yds. This load at 1,000 yards drops 480.2 inches (five feet less than the .223 above). Different shaped bullets will have different levels of drag and some will fly longer and straighter than others. Ironically heavier bullets also have more energy and at longer distances can actually drop less. If you have a firearm related question, please register and post it on the forums. If you still feel you are qualified to post in those subforums, please contact "Shane Tuttle" (the mod for that portion of TFL) via Private Message for assistance. How long your bullet stays in the air also depends on the shape. Then you can make yourself a cheat sheet with distances and bullet drops that you can quickly reference. This can be useful in comparing cartridges or loads. There are several philosophies on sighting in the AR and what range in best. Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: http://www.hornady.com/ballistics-re...ics-calculator, http://www.ar15.com/content/page.html?id=213. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side.

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