Tom's Ballistics
Classic exterior-ballistics programs — drag, lift, stability, and trajectory — plus a full cartridge ballistic calculator with searchable calibers.
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9 toolsTom's Ballistics
Point-mass trajectory calculator with a searchable library of known bullet sizes and calibers. Enter BC, velocity, zero, wind, and atmosphere for path, drop, windage, velocity, and energy.
Open →Tom's Bullet Comparison
Browse every library bullet that has a G1 or G7 BC. Excel-style multi-select filters on every column, plus Berger / Miller best twist from muzzle velocity, temperature, and altitude.
Open →Tom's Scope Comparison
Compare magnified scopes from the reticle library — host model, magnification, objective, weight, parallax, NV illumination, and elevation / windage turret ranges with Excel-style column filters.
Open →Barrel Life
Estimate accurate barrel life from powder heat potential, charge weight, bore diameter, and peak pressure using the Crittendon / AccurateShooter model. Includes a powder library and full caliber list.
Open →Drag Functions
Overview of the G1, G5, G6, and GL drag functions for velocities from 100 to 5000 fps in 100 fps increments, with chart and table (Lowry / Winchester-Western data).
Open →IntLift2
A modified version of INTLIFT.BAS that has some bug fixes. The original version was written to run on a Tandy1000. There were a few problems with floating point comparisons, etc. I believe that this version fixes those bugs.
Open →McDrag
Calculates bullet CD versus mach number based on bullet dimensions. For more information on this particular program see "McDrag" - A Computer Program for Estimating the Drag Coefficients of Projectiles, Robert L. McCoy, Technical Report ARBRL-TR-02293, February 1981, [ADA098110].
Open →McGyro
Stability program. Calculates required twist and bullet stability. This is not Greenhill's formula.
Open →McTraj
Trajectory calculation program using a second order Huene predictor corrector method, and a table of CD vs. Mach number to calculate point mass trajectories.
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