Master your long-range precision and eliminate the guesswork at the range. Whether you are dialing in a dedicated hunting rig, tuning a precision match rifle, or validating custom handloads, our simple and Advanced Ballistics Calculators both provide instant, field-ready data. By processing real-time aerodynamic drag models alongside your local environmental conditions, this user-friendly tool generates an exact DOPE (Data on Previous Engagement) card tailored specifically to your platform.
Simple Ballistic Zero Calculator
Estimate bullet drop for your specific rifle setup.
Advanced Ballistics & Trajectory Calculator
Generate precise drop and windage tables based on G1 drag models and environmental conditions.
Ammunition Inputs
Firearm Setup
Environment & Settings
How to Use This Calculator
To get the most accurate trajectory profile, follow these simple guidelines to fill out each section of the tool:
1. Ammunition Inputs
- Bullet Weight (grains): Enter the exact weight of your projectile in grains (e.g., 168 gr for a standard match .308, or 143 gr for a 6.5 Creedmoor).
- Muzzle Velocity (fps): Enter the speed of the bullet as it leaves your barrel, measured in Feet Per Second (FPS). For the best results, use an average number pulled from a reliable chronograph at the range.
- G1 Ballistic Coefficient (BC): Enter your bullet’s G1 aerodynamic efficiency rating. This decimal number can easily be found printed on your ammunition box or listed on the manufacturer’s website.
2. Firearm Setup
- Sight Height (inches): Measure the physical distance from the exact center of your rifle’s bore (the barrel) to the exact center of your optic’s main tube. A standard scope mount typically sits around 1.5 inches.
- Zero Range (yards): The exact distance at which your rifle is currently zeroed—meaning the distance where your point of aim perfectly matches your point of impact (most commonly 100 yards).
- Max Range (yards): The maximum distance out to which you want the calculator to generate data points.
3. Environment & Settings
- Temperature (°F) & Altitude (feet): Air density dramatically changes how hard a bullet has to fight through drag. Input your current local shooting conditions to ensure the calculator adjusts for air resistance perfectly.
- Wind (mph): Input the crosswind speed. The calculator assumes a standard 90-degree full-value crosswind to map out your structural wind drift.
- Increment (yards): Choose how often you want a data row generated on your card (e.g., every 50 yards or 100 yards).
- Elevation/Windage Units: Select how you want your adjustment data displayed. Choose Inches for pure linear drop, MOA if your scope turrets adjust in Minutes of Angle, or MIL if your scope utilizes Milliradians.
Pro Tip: Once you hit Generate DOPE Card, you can cleanly swipe left-to-right across the resulting table to view full velocity, kinetic energy, drop, and windage adjustments without losing their place on the screen.