Enter the first two variables, then press calculate. This form will help you calculate the power factor for most types of ammuntion as specified by common shooting organizations. Our initial research data covered the relationship between barrel length and velocity for some 13 common handgun calibers/cartridges. Modern riffles have more than 1200 mts per second of speed. We thought you might enjoy it as well. This calculator is used to find the optimal twist rate for your bullet. Enjoy, play around and learn! Muzzle Energy will be rounded to the nearest whole number. Foot pounds of energy from a pellet or rifle is easily calculated with the speed of the projectile and the weight in grains. Have you ever wanted to compare a fast lightweight bullet to a slower heavy bullet to see which one hits harder? Bullet Drag and Twist Calculates the bullet CD, and CD components, BC required twist and stability for input twist. The Magneto Speed chronograph mounts to the muzzle, or the suppressor in this case, to measure the velocity of the bullet as it exits the rifle. The good news is that the cost of a smartphone-based ballistic calculator ranges from free to $29.99. We use this nifty bullet energy calculator when we chronograph projectiles. Simple add the speed and grains into each of the boxes for each column. This is a general information calculator and there may be additional parameters that can have slight effects. Muzzle Velocity How fast the bullet leaves the rifle as measured by a chronograph. The Bison Ballistics calculator is a modern ballistics calculator for sportsmen. Please Note the Muzzle Velocity Result as well as the Suggested Twist Rate. Click Here to open in small window. It is calculated from mass, velocity and weight of the bullet. Power factor is calculated by the formula: bullet weight times velocity divided by 1000. Ballistic Coefficients (Velocity) Calculates the ballistic coefficient for near and far velocities, atmospheric conditions and drag function. Muzzle energy is the kinetic energy of the bullet when expelled out from the muzzle to the target. Use this online calculator and find the muzzle energy in foot pounds and joules. About the Velocity Estimation Calculator How does it work? Just enter your bullet weight below and its velocity Obtain multiple velocities from different gun settings or any other combination you want to compare with our FPE calculator to calculate muzzle energy. As a rule of thumb, a bullet looses 5-15 fps in this short distance. Muzzle velocity is the velocity or speed at which bullet leaves from the gun. The MV Result will warn you if your velocity is too low. Higher the muzzle velocity, better the chance of the bullet reaching the target quickly. Muzzle energy will be higher when bullet is heavier and moves out faster from the muzzle. This reloading article provides a ballistic calculator that helps you compare different weight bullets, at any velocity, to see which one will hit harder. Calculating Ammunition Power Factor. Optimal Bullet Velocity Calculator Instructions: Simply, enter the weight of your target animal, the bullet weight in grains, and the OBV row will self populate and give you an Optimal Bullet Velocity. Muzzle Velocity Calculator. It's based on the assumption that a rifle will impart the same amount of kinetic energy to both bullets. This calculator is a simple estimator. Now you simply cross-reference your OBV with your ballistic data to ascertain your maximum effective range. For very accurate results, remember to account for the velocity lost in the 10-15 feet between the muzzle and the chronograph. Ballistics Calculator Stability Calculator Bullet Comparator Velocity Estimator Recoil Calculator Hit Probability Calculator. Bullet Database; Ballistics Calculator. Bullet Energy Calculator. 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