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Gun Recoil
The kick or rearward force of a gun upon firing is commonly referred to as recoil. Recoil is largely dependent on gun weight and the type of ammunition you are using.
To calculate the recoil energy your particular gun/ammo combination is producing, do the following:
1. Display the Gun Recoil window by clicking the Calculate menu, then selecting Gun Recoil.
2. Enter the Gun weight in pounds (lbs).
3. Enter the cartridge Bullet Weight in grains.
4. Enter the cartridge Muzzle Velocity in feet per second.
5. Finally, enter the cartridge Powder Charge in grains (i.e. if you are using 50gns of Win 760 powder, enter 50).
Click the 'Calculate Free Recoil Energy' button. The number shown is in ft-lbs.
NOTE: A free energy recoil value of 15 ft-lbs or greater, produced from a gun weighing 6-7 pounds, is considered excessive.