Firearm is a term used to refer to small arms, portable guns that can be carried by a single person. The smallest of all firearms is the handgun. There are three common types of handguns: single-shot pistols, revolvers, and semi-automatic pistols. Firearms are also categorized by their functioning cycle or "action" which describes its loading, firing, and unloading cycle. These include manual (Single-shot and repeating), Semi automatic (self-reloading), and Automatic (Gatling, Maxim, Lewis, MG 08 guns), Machine guns (belt-fed ammunition), etc.
- Sectional Density: This computes the factor used in the computation of the ballistic coefficient called sectional density.
- Bullet Ballistic Coefficient: NEW! This factor represents a bullet's ability to overcome air resistance in flight.
- Ballistic Coefficient from Bullet's Mass, Diameter and Form Factor NEW!
- Miller Twist Rule: calculate the optimal barrel twist rate for stabilizing a bullet's flight given the bullet's diameter, length and mass.
- Taylor Knock-out Factor: Calculates a factor indicating the power of a round,.
- Greenhill Formula for Optimal Rifling Twist Rate: calculate the optimal barrel twist rate for stabilizing a bullet's flight given the bullet's diameter, length, specific gravity and velocity.
- Bullet Flight Range: NEW! This computes the maximum range (horizontal distance) traveled by a bullet based on the muzzle velocity, elevation angle and shooter height.
- Muzzle Energy of a Projectile: calculate the kinetic energy in a bullet immediately after leaving the barrel given the bullet's mass and velocity.
- Recoil Velocity of a Gun: computes the velocity at which a gun will move in the opposite direction in relation to the projectile that it fired.
- Cost per Round: cost per round of ammunition based on the cost of a container of cartridges and the number of rounds in the container.
- Rifle Sight Correction Angles: Computes the Minutes of Angle corrections for rifle sights.
- Shotgun Shell Reloading Cost: Computes the cost to reload used shotgun shells (hulls) with powder, shot, wads and primers.
- Shotgun Shell Loading Cost: Computes the cost to load new pre-primed shells (hulls) with power, shot and wads.
- Metal Ball Weight: Computes the mass (weight) of a spherical metal (e.g., steel) ball based on the size (diameter).
- Metal Cylinder Weight: Computes the mass (weight) of a metal cylinder based on the size (diameter and length).