The momentum of an arrow is linked to arrow penetration. Frames per second (FPS) Calculator | PC Builds 44 Yards - Maximum Effective Hunting Range. Point Blank Range; Point blank range when sighting in a crossbow is the first point at which the line of sight intersects with the arrows path in the arrows trajectory arc. Compare expected FPS across over 120 crossbows and decide which one to buy. This arrow speed calculator allows you to accurately determine the speed of an arrow. Momentum is often considered more important for hunting because it can help the arrow maintain its penetration potential. 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. It will give you a rough idea of how fast an arrow travels after changing the bow from the recommended specifications. Arrow flight time till impact at 44 yards, approximately 4/10 of a second. Point Blank Range; Point blank range when sighting in a crossbow is the first point at which the line of sight intersects with the arrows path in the arrows trajectory arc. Using everyday masking tape, you can easily calculate the power stroke of your bow. Arrow Ballistics Calculator Kinetic Energy, Drop, Speed, Momentum, Crossbow Kinetic Energy Chart, Calculations, Hunting Requirements, Crossbow Arrow Drop Charted Test Results. Execute. Kinetic Energy: 5.55 foot-pounds. At the rated 350 fps IBO the speed should be 319 so we know that the IBO is slightly high. While KE is an important factor in penetration, momentum is also critical because it determines the arrows ability to push through the target. The table below provides us with a general idea of how much momentum is needed for different types of wild game and it also shows us the arrows penetration capability when coupled with KE. We operate independently and do not provide Sponsored content. Arrow Speed Calculator | Archery Calculator - CalcTool Every inch of draw length above 30 will add 10 feet per second to the IBO value. Every 3 grains of additional weight on the bow string will subtract 1 foot per second from the IBO value. Nevertheless, most archers do not use these exact parameters. We strongly recommend reading our detailed kinetic energy tests and guide for more information. Let's say you keep the regular. Do you really need a multi range sight for trajectory compensation. Factoring in the gravitational constant in both of those formulas for hunting arrows is necessary to account for the effect of gravity on the arrows motion. In the majority of cases once a peep is added the speed will only be a few fps off but the ratings of some bows are significantly off. A heavy arrow will produce a great deal of arrow momentum even at the price of arrow speed, but will eventually go down as arrow speed decreases. View Results* Dark Blue: Optimal arrow weight. We have not done very precise tests to figure this out (we will update this post when we do), however a very close estimate would be to assume the following. For more information on Kinetic Energy and Momentum, please see Kinetic Energy, Momentum and Arrows Enter the arrow weight (grains) Enter the arrow speed (fps) Momentum = Kinetic Energy = Archery Report Sites Archery Report Archery Calculator Let us see how to use this tool: Begin by indicating the IBO rating in fps in the Bow IBO rating field. Arrow weight: Again, the rule of thumb is that for every 5 grains of added arrow weight, you will drop raw speed by 1-2 fps. If you open any online store that is selling them, you'd see that the speed of the arrows (measured in FPS or feet per second) that are launched by each listed model is their most prominent feature. Reduce the IBO speed until the calculator shows the verified speed of 315; in this case, the correct IBO value would be 346 fps. The arrow speed calculator makes it easy to estimate the speed of an arrow! In the majority of cases once a peep is added the speed will only be a few fps off but the ratings of some bows are significantly off. Bows 5-10 years old will tend to gain efficiency faster than one that is brand new. Please keep in mind that this approach will only give you close estimates, and that it becomes a less accurate the further out we go (I wouldnt suggest using it for anything beyond 70 yards, which is far beyond what youll be hunting from anyway). As the arrow travels downrange it is constantly slowing down and dropping toward the ground, the further it travels, the faster it falls to the ground. You can check this calculator to see how fast the arrows lose height at different flight speeds. As you might expect, a heavier arrow flies slower than a smaller and lighter one. Chasing 300 fps? 450 grain arrows will fly at ~95% of initial speed If you use the chart above to compare kinetic energy between a 350 FPS and a 300 FPS crossbow, youll notice that the first one delivers significantly more KE at 50 yards, than the second crossbow does at even 10 yards! For example, it takes approximately 40 ft/lbs(+or-) of kinetic energy to kill a whitetail deer. With the disadvantage of my short draw length of 27.5-inches and my draw weight of 60-pounds because of a bad shoulder, I decided to go with the fastest arrow within that range, something right around 400-grains. When using the calculator above, input your values and then compare them to those values in the tables below. If you look at the above chart you will notice that from 250 F.P.S. Many bowhunters buy arrows that fit their bow, their draw weight, and their draw length; but fail to understand the unique characteristics of each arrow and the arrows ability to penetrate and kill the wild game they are hunting. There are several factors that go into the arrow speed equation. Use the Arrow Efficiency Calculator to find the optimal arrow for your bowhunting setup. Finally, using our arrow ballistics calculator (which requires that both arrow speed and mass are known) we determined the values plotted in the chart below. After you've entered these values, the calculator will display the actual arrow speed, momentum, and kinetic energy of the arrow , What is IBO speed? Four terms to know when properly sighting in a Crossbow. When you input your bow and arrows information in the calculator below, you can see right away what your arrows potential is. Kinetic Energy & Momentum Calculator Find out the kinetic energy of your arrow or bolt using the following simple calculator. Its only from 300 FPS and up that you get enough kinetic energy at all feasible hunting distances (up to 50 yards) to be able to comfortably hunt elk. Crossbow Kinetic Energy Chart, Calculations, Hunting Requirements, Compare expected FPS across over 120 crossbows, Arrow Ballistics Calculator Kinetic Energy, Drop, Speed, Momentum, Crossbow Arrow Drop Charted Test Results, Best Hunting Crossbow For The Money in 2020. With that said, the average efficiency curve utilized for the calculator is based on various bows from APA, Elite, Bowtech, Hoyt, and PSE ranging from 40lbs up to 85lbs. The values in the table below come from the following bow and its associated settings. By drawing your bow, you convert mechanical energy (ME) and store it as potential energy (PE) in the bow limbs. You will need to provide total arrow weight and initial speed for the calculation to be effective, as well as some other optional info (see below). For the least effort, draw your bow, aim at the top bullseye with your top pin, and check to see if from 50 yards your 50-yard pin, for example, coordinates with the bullseye covering your 50-yard group. Arrow drop test results While it is based on the bow speed IBO specification, you can input the individual settings of your bow. FOC stands for Front of Center balance point. Arrow Ballistics Calculator - Kinetic Energy, Drop, Momentum , because of the higher momentum at the moment of impact. My bow stayed the same: 60-pounds at 27.5-inches of draw. To properly calculate arrow speed, use the following formula: IBO Speed(in fps) + (Draw Length 30) x 10 Additional Weight on Bowstring (in grains) / 3 + MIN(0, (Arrow Weight(in grains) 5 x Draw Weight in Pounds) / 3 )). Contact Us for More Information. The factors that impact the overall speed of your arrow are: In addition, it is important to understand that sometimes even minor changes to your draw length, draw weight, and arrow weight can seriously affect the speed, kinetic energy, and momentum of your arrows when they are shot from your bow. In the calculator below, we measure this in slugs. For every inch of draw length under 30, subtract 10 ft/s from the IBO value. Meaning that we can increase the speed by simply using a lighter shaft or broadhead, but that would actually reduce the penetration potential of the arrow because momentum is mostly affected by the weight of the projectile. As the older bows were less efficient out of the box, they naturally have more room for improvement. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you. This specification determines the arrow speed, provided that you keep the following parameters: If you deviate from these parameters, the arrow speed will not equal the one given by the specification. The calculator uses this data, along with AI models, to predict the performance . Here are the results of a research that compared the effect of a deer jumping the string when shot using bows with different speeds at different distances: For instance, we can see that at 30 yards, a shot deer would drop about 6 inches before an arrow reaches it, if said arrow travels at 258 FPS. 36 Yards - Maximum Point Blank Hunting Range. The heavier the arrow is, the faster gravity will pull it toward the ground, but arrows or bolts do not have an even weight throughout. As you know, IBO speed is a standard measure of the speed of a bow, and by using it as a baseline for all calculations, our calculator can provide you with accurate and reliable results. Draw length LLL This is the distance that the string is pulled back. Enter speed and arrow weight data into the calculator. #2: Even a 50 FPS speed difference alters kinetic energy significantly. Bows 5-10 years old will tend to gain efficiency faster than one that is brand new. Knowing I shot my 315-grain antelope arrow at 309 FPS, I entered that data to find the most efficient arrow weight for my new whitetail arrow. 475 grain arrows will fly at ~92.3% of initial speed To make the change inarrow, I went back to ourArrow Efficiency Calculator. The general guideline for this factor is: For every extra inch of draw length increases approximately 10 fps the arrow speed; and. Crossbow Kinetic Energy 200 FPS 225 FPS 250 FPS 1/3 10 20 30 40 50 0 25 50 75 100 125 150 Yards travelled by arrow Kinetic Energy ( In food - pounds) Chart by Visualizer 15.5 300. You will find that most modern bows are more than capable of killing most game animals. Reduce the IBO speed until the calculator shows the verified speed of 315; in this case, the correct IBO value would be 346 fps. The chart below demonstrates the minimum, as well as recommended, kinetic energy, for hunting different-sized game. 1. One thing to remember is that while kinetic energy provides the impact of your arrow on your intended target, what it doesnt necessarily provide is information on your arrows ability to penetrate and travel through your target. So the important question right now is: how much does initial arrow speed drop as its weight goes up? The second conclusion is that this drawback of shooting slow weapons can be remedied to a good extent by simply reducing the distance we attempt shots at. Every bow gains efficiency a little differently. The results suggested a weight between 400- and 428-grains. calculating loss in fps using heavier arrows than - Crossbow Nation Archery Calculator Archery Calculators: Kinetic Energy, Momentum ), Any additional weight on your bowstring (nock loop, peep, etc.). IBO Speed (feet per second) You want to know the arrow's speed when you increase both the draw length and the arrow weight. Another common speed rating is the ATA rating, which uses a 30-inch draw length, 70 lb. Every inch of draw length under 30 will subtract 10 ft per second from the IBO value. Draw length: A longer draw length creates a longer power stroke than a shorter draw length, allowing the bow to store more energy. Arrow Efficiency Calculator: Optimize your bowhunting set up. For every 3 grains of additional weight on the bowstring, subtract 1 ft/s from the IBO value. The technical storage or access that is used exclusively for anonymous statistical purposes. Mid-Range Rise; Mid-range rise when sighting in a crossbow is the highest point in the arrows trajectory between the point blank range and the true zero point. Granted, this is not as accurate as a chronograph, but it'll give you an idea. Now, there are a few bows rated at 350+ fps based on the International Bowhunting Organizations (IBO) standard. Mine hits dead nuts from 30 out to 135 yards. The greater the draw weight, the greater the speed of the arrow shot from the bow. Even at 275 FPS you only get close to it at 10 yards out. The optical chronograph is insensitive to shooting distance, but shooting errors can destroy the chronograph. This calculator is based on average efficiency gains as arrow weight is increased from 5 grains per pound (IBO).