Need Help or Found an Issue?
Purpose
This tool compares two loads side-by-side, showing drop, velocity, energy, wind drift, and flight time at 100-yard intervals. Use it to evaluate which load performs better for your needs.
Inputs
Weight (grains): Bullet weight. Required for energy calculations.
BC: Ballistic Coefficient. Higher values mean better aerodynamics and less drop/drift.
Drag Model: G7 is recommended for modern boat-tail bullets. G1 for older flat-base bullets.
MV (fps): Muzzle velocity in feet per second.
Max Range: Maximum distance to simulate.
Results
Drop: Bullet drop below muzzle line. Units selectable: MOA, MRAD, or inches.
Velocity (fps): Remaining bullet velocity at that range.
Energy (ft-lb): Kinetic energy at that range.
Wind Drift: Wind deflection with 10 mph crosswind from 3 o'clock. Units selectable: MOA, MRAD, or inches.
Time: Flight time in seconds to reach that range. Lower = faster bullet.
B2 Advantage: Percentage showing how much better (+) or worse (-) Bullet 2 is. Green = B2 is better, Red = B2 is worse.
Simulation Details
Conditions: Standard atmosphere (59°F, sea level, 50% humidity).
Wind: 10 mph crosswind from 3 o'clock direction.
Launch: Horizontal fire from muzzle (no zero, no scope height).
Spin Effects: Disabled for simplified comparison.
Known Limitations
This list is not exhaustive. Additional limitations, errors, or inaccuracies may exist.
Trajectory Values Not for Real-World Dialing: The trajectory values shown are not accurate for dialing a rifle in the real world. This tool does not account for zero distance, scope height, and other factors, which are essential for accurate holdover calculations. These values should only be used for relative comparison between loads.
Accuracy: Simulation accuracy degrades at longer ranges, longer flight times, and with atypical bullet parameters (unusual BCs, extreme velocities, etc). Use results for relative comparison rather than absolute predictions. Do not rely on these calculations for any purpose where incorrect data could be hazardous.
Full Disclaimers: See the
Terms of Service for complete safety and liability information.