Flat Trajectory: Optimizing the path that the arrow travels from release to impact can greatly increase success. So, you can see how it is similar to a vertical bow shooting a 400-grain arrow at roughly the same speeds. form.M.value = ""; if(!form.KE.value) KE = 0; The taper may constantly lower shaft drag the deeper it penetrates. This calculator doesn't just calculate your arrow's trajectory, but actually gives you several calculators, including arrow speed, arrow weight, FOC, and shot angle/distance. var kon2=225218 If you fell asleep in your high school geometry or physics classes, you might groan a bit when you hear that calculating trajectory has to do with both geometry and physics. Increasing arrow mass results in increased penetration and, despite what you may have heard, momentum is more important than kinetic energy in predicting penetration. The trajectory of an arrow is determined solely by its speed at any point in time. The arrow ballistics calculator on Outdoorden.com is a handy, no frills calculator which gives you the arrow's ballistics in flight. You input the arrow weight, the velocity, the draw weight, and the zero distance, it crunches the numbers and gives you a handy table with the height of the arrow in relation to the zero … Designed for a 60 lb. Math is math and it simply makes sense to use the tools available on the Internet rather than waste your time number crunching, when you'd rather be out in the field looking for that big buck or bull. For each year in your Trajectory, historical return rates are used beginning with 1928, by default. Enter the total length “L”: Enter the measured length “B”: FOC = % AMO, Method 1 (Recommended): 1) Measure the length of the arrow shaft from the throat of the nock to the end of the shaft, excluding the insert, this is “L” 2) Using a sharp edge, balance the arrow (including the point, fletchings and nock) and mark the balance point Elk are big, tough animals and it’s to your advantage to approach an upcoming archery hunt with as many of the preceding factors as possible in your favor. This is the distance needed for the calculation. FOC = 22%. The only way to make an arrow go quicker (any given bow ) is make your arrows lighter. form.KE.value = ""; Enter the angle. You will need to provide total arrow weight and initial speed for the calculation to be effective, as well as … Compound bow manufacturers have hyped arrow speed as the single most important criterion and consequently, light, fast arrows seem to have become the norm. Teflon coated broadheads show a penetration gain in soft and extremely fibrous tissues, although it makes little difference in bone penetration. The Ballistic Trajectory Calculator @ shooterscalculator.com is a free, online tool to help shooters calculate the flight path of a bullet given the shooting parameters that meet their conditions. The trajectory of a crossbow is very similar to that of a compound bow that shoots roughly 300 fps. Draw weight in pounds. // Just relax and look how easy-to-use this maximum height calculator is: Choose the velocity of the projectile. 315 grain, single-bevel, grizzly-type broadhead (MA=2.4). Overall penetration, after breaching heavy bone, is also more closely related to arrow momentum. compound, increasing your arrow weight from 500 to 700 grains only increases the error by about 1.5 inches, when misjudging distance by 5 yds. This trajectory differs from the expected trajectory the arrow would take if it were completely rigid (and did not oscillate). { KE = ((weight * (velocity*velocity))/2)/kon2; Velocity in feet per second. form.weight.value = ""; // Compare your figures and realize that fast light arrows may have an impressive KE, but that you can get much better momentum values with heavier arrows. Broadhead edge bevel. 70 pound draw weight. You will need IE4 and above or Netscape 4.08 and above to use. By using this website, you agree to our Cookie Policy. I ordered some heavier arrows (camo axis 340's which should be about 454 grains finished weight)and want to be able to figure out the impact on trajectory at ranges from 10,20,30,40,50,60,70,80 yards. You input the arrow weight, the velocity, the draw weight, and the zero distance, it crunches the numbers and gives you a handy table with the height of the arrow in relation to the zero drop point. 5 grains of arrow weight added. Broadhead/arrow silhouette. X = V initial t ( cos ( theta )) This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. 350 grain arrow. The penetration advantage of increasing arrow mass is less important when only soft tissues are encountered (Momentum, Kinetic Energy, and Arrow Penetration. So, let's look at a few of the trajectory calculators and see how they work. var KE = 0; // showresults(form); } // Everybody are welcome to post comments at the bottom of each page. form.KE.value = KE; © Archery Country. An increase in arrow mass requires a decrease in velocity, however, creating a tradeoff between using 1) a heavier, more lethal arrow that requires better distance estimation skill, versus 2) a lighter, less lethal arrow that has a flatter trajectory and smaller error associated with misjudging distance. Broadhead edge finish. { It will tell you how you should aim your bow as though you were shooting an animal at a straightline distance. Try to use arrows of at least 650 grains with FOC values as high as possible. The horizontal and vertical motions may be separated and described by the general motion equations for constant acceleration. The arrow’s trajectory – a high arc for recurve bows and flatter for compound bows – also straightens as the arrow hits the target. Poor arrow flight can occur for a number of reasons, and may become a problem as you experiment with different shaft/broadhead choices in an attempt to build a better hunting arrow. …, Peep Sights, Silencers, Cable Slides, Grips, All Peep Sights, Silencers, Cable Slides, Grips, Quivers, Arm Guards, Bow Stands, and Finger Tabs, Optics, Rangefinders, Thermal Imaging, and Gps, All Optics, Rangefinders, Thermal Imaging, and Gps, Victory VAP TKO Elite Low Torque Custom Fletched 300 6 pack, Victory VAP TKO Elite Low Torque Custom Fletched 350 6 pack, Ravin R500 Electric With Garmin Xero X1I and Soft Case, Ravin R500 Slate Gray With Garmin Xero X1I and Soft Case, Ravin R29X With Garmin Xero X1I and Soft Case, arrow ballistics calculator on Outdoorden.com, Pete Ward's Archery Ballistics Calculator, Archery Country Groups and Private Events. Shot placement remains important, but need not suffer with heavier arrows. Ballistic Trajectory Calculator. General Ballistic Trajectory The motion of an object under the influence of gravity is determined completely by the acceleration of gravity, its launch speed, and launch angle provided air friction is negligible. Here again is the zoomed in chart that tells a very different story from the pin being sighted in at 20 yards. Simply click the "new comment" link and a window with the uploadform appear. Trajectory is inches from line of sight. Our own current arrow setups may serve as examples to get you started: Adrian: 29” tapered carbon shaft (65-80 spine) with 4 fletch, 3” feathers (350 grains). Free Projectile Motion Calculator - calculate projectile motion step by step This website uses cookies to ensure you get the best experience. form.weight.focus(); // Let's type 30 ft/s. form.weight.value = weight; Long, narrow broadheads have a penetration advantage over shorter, wider heads due to their higher mechanical advantage, a measure of the broadhead’s ability to do useful work (e.g., penetrate tissue) with a given force of impact. The shot angle/distance is the one that will give you the pertinent information when it comes to the arrow's trajectory. Whether this penetration gain is an effect of the slight FOC increase (tapered arrows have a naturally higher FOC), or other factors, is unclear. Arrow weight is in grains. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. else velocity = eval(form.velocity.value); The only force on an arrow between the time it leaves the bow and it hits the target is gravity. Thank you for your continued support and I wish each and every archer a very MERRY CHRISTMAS! Shaft and ferrule diameter. What you get in return are the vertical drops, energies, speeds, and momentums of the arrow shot at distances in increments of 10 yards. g is the gravity constant Velocity estimate assumes equal kinetic energy for each arrow … Testing showed the Tanto tip outperformed all other tip designs when encountering bone, likely because it best resists damage and skipping as the arrow passes through the curved surface of animal bone. In arrow flight, trajectory refers to the exact arcing path the arrow travels from the crossbow to the target downrange, as soon as the arrow leaves the power of the bowstring it is subjected to atmosheric drag (slowing it down) and gravity (pulling the arrow … @ 27” compound. As expected, including drag in the trajectory calculations causes the arrow to fly slower and shorter for a given launch angle. If you want to input some very precise measurements that will accurately calculate drag on the arrow, you should consider Pete Ward's Archery Ballistics Calculator. Ballistic Trajectory Calculator. The frequency and magnitude of “single bevel induced” bone splits is greater in the rib, humerus, or femur than in the scapula, pelvis, sternum, or spine, but occurs frequently with all. Our projectile motion calculator is a tool that helps you analyze the parabolic projectile motion. t is time var velocity = 0; Total arrow mass = 660 grains. Optionally, type the initial height. Bruce: 29” tapered carbon shaft (345 grains) with 3 fletch, 4” vanes. // if(KE == 0) i--; Maximum height calculator helps you find the answer. // Shaft profile. The more typical 300 fps arrow is nearly 3″ high at 20 yards and 7″ low at 40 yards. document.getElementById("copyright_year").innerHTML = new Date().getFullYear(); It's time for a Sitka Sale! Lastly, Best Crossbow Source has an excellent Arrow Ballistics Calculator that is easy to use and has nice graphics. The progressively increasing cavity created between shaft and tissues may facilitate the flow of shaft-lubricating blood, reducing friction. // to an elk actually at 25 yds. Among the 11 arrow penetration factors, compound shooters may find arrow mass problematic. You then have to account for drag on the arrow to get the trajectory, making the mathematics fairly complex. if(!form.velocity.value) velocity = 0; { This is the amount the arrow drops from your top-pin zero, but it will also be the arrow’s peak trajectory—the maximum height the arrow will rise above line of sight—when you zero a pin at this range. Use this ballistic calculator in order to calculate the flight path of a bullet given the shooting parameters that meet your conditions. A crossbow bolt weighs around 450 grains. It's much more important than KE. form.M.value = M; Javascript Archery Ballistics Calculator V2.08. First and foremost, hitting an elk with an arrow is not the goal, rather finding every elk you hit is what really matters. // Table 2 and Figure 2 shows the ballistics data for a 50 caliber muzzleloader bullet. … Minimum arrow weight 400gr / 6.6gpp for the low weight, and 800gr / 13.34 for the high. The arrow ballistics calculator below will help you determine your arrow’s vertical drop, speed, kinetic energy and momentum, for up to 70 yards out in 10 yard increments. +/- 10 pound change in draw weight ~ +/- 18 FPS. Broadhead mechanical advantage (MA). A nice calculator for determining what kind of arrows are best for your bow. Brass insert (100 grains). This “heavy bone threshold”, which occurs at about 650 grains, is more dependent on arrow mass than the force of impact. Note: For calculating the Kinetic energy on an arrow at given speed all you need is initial velocity and arrow weight. Arrow flight. Total arrow weight with 100 grain head is 430 grains. You may find only a small additional error in misjudging distance, especially under 30 yards where most elk are shot. Enjoy 20% Off Everything Sitka from now until February 21st! Very nice. Product Support. form.velocity.value = ""; The program has the means to add your bow and arrow information into the database and using THIS METHOD is a more accurate way to use TAP PRO anyway. var weight = 0; Penetration increases by 10% when the shaft diameter is less than that of the ferrule; thus, it’s best to select a shaft that has a smaller diameter than the back of your chosen broadhead. (19% minimum). Ballistics data is the measured trajectory of a bullet or arrow at specific distances. What you get in return are the vertical drops, kinetic energies, speeds, and momentums of the arrow shot at distances in increments of 10 yards. draw weight, 350 grain arrow) will affect the speed. { M = (weight * (velocity)*100)/kon2; else KE = eval(form.KE.value); Whatever direction an arrow flexes, the movement is greatest when the arrow first leaves the bow, and then decreases and stabilizes as the arrow nears the target.