The application calculates muzzle energy, TKO, IPSC factor and sectional density of a bullet. TKO is Taylor knockout factor, a number used to evaluate stopping power of a cartridge. It takes into consideration bullet weight, caliber and velocity.

Sectional density expresses ratio of bullet's weight to its caliber. It is used to compare penetration of the bullet. Sectional density doesn't take into consideration bullet material, velocity or impact angle. In general the bullets with higher sectional density would penetrate deeper under the same conditions (velocity, bullet material, target material, angle of impact, etc.)

The calculated cartridge can be displayed in the list of common handgun cartridges and is placed in the right rank according energy, TKO or IPSC factor.