Ballistic Coefficient Correction

This will allow you to correct the ballistic coefficient to actual shooting conditions. It corrects the ballistic coefficient for temperature, barometric pressure, altitude, and relative humidity. The ballistic coefficient can change 30% or more on altitude differences alone.

Velocity Averaging

Shooters and experimenters need a quick way to evaluate range data to obtain meaningful information. This will allow you to average velocity data, find high and low points, and calculate standard deviation. It can be used to average any set of figures, not just bullet velocities.

Instrumental Velocity Correction

Chronograph velocities are generally taken between 5 and 10 feet from the muzzle of the firearm being tested. The bullet velocity has already begun to decrease at this point. This section of the program will correct the chronograph velocity to the actual muzzle velocity.

Optimum Rifling Twist

The essential element in barrel design, as far as accuracy is concerned, is defined in one word - Twist. Too slow a twist may not stabilize a bullet, while too fast a twist may cause bullet deformation or even bullet blowup. This will allow you to find that optimum twist for maximum rifle performance.

Rifle Recoil

Recoil is the rearward thrust of the firearm as the cartridge is fired and the bullet proceeds down the rifle bore. The amount of recoil produced is dependent on weight of firearm, bullet momentum, and powder charge. Both calculated and felt recoil are reported.