output/delivered energy of your arrow. Weight (we must have two values) // here's where we define data, and put the math functions best, or you lose energy at worse. // else The weight of your arrows will vary depending on your objectives: If you want to target practice, you want the arrow to weigh in total (shaft, vanes, insert, nock and field point combined) around 5 to 6 grain per pound of draw weight. (Don't confuse it with mass! Both involve calculations of mass and weight, but in different ways. If you want to hunt, you want an arrow with a total weight of between 6 and 8 grain per pound of draw weight. Increase bow draw weight, and/or bow efficiency to deliver Divide the arrow’s length (distance from the bottom of the nock groove to the shaft’s end) by 2. Arrow Weight 0 grains. highest arrow speed. // and convert to variables So if your bow has 60 lbs. Arrow weight has great implications when shooting. At 60-pounds and approximately 27-inches, the perfect spine was 390, which weighs 9.7 GPI. An arrow’s length and weight, and the energy stored in bow limbs when fully drawn, help determine an arrow’s flight path.. Every archer requires a different arrow setup to maximize their performance. var Kon=450240 My Conclusion: Draw Weight For Hunting. Knowing how your arrow speed changes with the increase in arrow weight, you can now easily figure out the new kinetic energy: For instance, if you know your crossbow shoots your current 400 grain arrows with a speed of 400 FPS, our chart above tells you to expect 124.8 ft-lb of kinetic energy at 30 yards. There are other variables to consider, such as what arrow and broadheads are used and the distance of the shot. Sweldong Pinoy is a salary calculator for Filipinos in computing net pay, withholding taxes and contributions to SSS/GSIS, PhilHealth and PAG-IBIG. This utility is designed to calculate weight and balance of THIS SPECIFIC 1974 PA28R-200 Piper Arrow II. Unlike longbows or recurves that can be practically drawn back to any length, compound bows have a determined draw length (28”, 29”, 30”, etc.). For most archers (27 to 30 inch draw length and 60 to 70 pound draw out of a modern compound bow), an arrow weighing between 420 to 450 grain tends to lead to a great balance of speed and energy to be effective for hunting. { The ideal arrow weight for you will depend on your draw weight and draw length. The IBO standard is five grains per pound minimum; arrow weight, including tip, must be at least five times the bow’s draw weight. Ideal Weight Calculator. The shaft is the component that you measure to determine the length of the arrow. // return;