There may be even more digits out to the right of the decimal point, but that's where my small calculator stops, so that's my answer. Now, divide that number by the constant 450240 and you get 11.371712. The energy would be 8 times the square of the number 800, which is 640,000. Suppose we shoot an 8-grain pellet at 800 (f.p.s.). Click calculate, this will show you under Results 2 the aproximate Muzzle Velocity in FPS and Meters Per Second and Range in Feet and Meters for your Airsoft Gun. Its the first mobile ballistics app utilizing the 6DOF calculation model. Enter the Energy (Joule) results from the FPS and Velocity calculator in the 'Input 2' field along with your BB weight in grams. That number is obsolete, but the number that replaces it, 32.174 feet per second (f.p.s.) below the 50th latitude, does not change the energy calculation significantly. Lapua Ballistics is the ultimate 6DOF ballistics calculator for mobile devices. The number I am using for the acceleration of gravity is 32.16 f.p.s. That last number is a constant created by multiplying two times the acceleration of gravity by 7,000 - the number of grains in a pound. Join up with other passionate Airgun Enthusiasts at the and help grow the Airgun Community.Multiply the product of the weight of the pellet (in grains) times the square of the velocity and divide that number by 450240. It takes into effect things like atmospheric conditions, wind, and even allows you to make projections shooting both up and down hill. Our calculator creates a proper ballistics trajectory chart that details range, drop, velocity, energy (fps), wind drift, and time. Heres a Java calculator which will solve the equations presented on this page: Ballistic. Please share, like, and tweet this page and others to show your support. Fun calculations to tryįind the average speed of a baseball fastball and the weight of the baseball to find the energy the catcher is receiving. Doubling the launch velocity produces four times the maximum altitude.
It gives a relative measurement of power derived from the FPS and weight of the projectile. FPE FPE is an abbreviation of Foot Pounds of Energy. Airgun Projectile Weight In the US, pellets, bbs and bullets for airguns and firearms are typically measured in Grains. Airgun Calculation Definitions FPS FPS is an abbreviation for the measurement of Feet Per Second measurement. To get the most performance out of an airgun it is important to measure the velocity and weight of the pellet to be able to understand the Foot Pounds of Energy. Most Chronographs have two sensors you shoot over so that the Chronograph can measure the elapsed time a projectile takes to pass over the first sensor and then the second sensor. 5 is essentially a 20 loss in velocity and 30 loss in muzzle energy. To measure an airgun velocity you'll need to borrow or purchase a Chronograph. This is a useful measurement in that you can use it to compare power settings of an airgun, the energy difference of swapping out a lighter or heavier projectile, or changes in velocity. This Airgun Energy Calculator is a simple widget designed to take the velocity of a projectile (bb, pellet, dart or bullet), its weight in grains, and calculate the foot pounds of energy (fpe) at the muzzle. Airgun Calculator Airgun Energy Calculator Velocity: Projectile Weight: Reset Calculate Muzzle Energy: Airgun Energy Calculator
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