About
CTS Ballistics Calculator is a comprehensive, browser-based ballistics computation tool designed for precision shooters, hunters, and long-range rifle enthusiasts. Built by Custom Turret Systems — a company specializing in custom scope turret labels — the calculator helps users understand exactly how their ammunition will behave at varying distances under real-world environmental conditions. Users input detailed scope parameters such as click value (supporting common increments like 1/4 MOA, 0.1 MIL, and more), scope height above bore, zero range, and maximum engagement range. On the ammunition side, the tool accepts muzzle velocity, bullet weight in grains, ballistic coefficient, and choice of G1 or G7 drag model — the two industry-standard external ballistics models used for flat-base and boat-tail bullets respectively. Shooting conditions including temperature and altitude are factored in to account for air density changes that affect trajectory. Wind corrections can be displayed in MOA, MIL, or inches at 5 or 10 mph reference speeds. The output is an auto-updating ballistics range chart available in both a detailed view and a simplified drop chart format. The calculator is particularly useful for generating the data needed to order custom CTS turret labels, which are adhesive dials placed on rifle scope turrets for quick field adjustments. It is equally valuable as a standalone planning and training tool for competitive shooters and hunters preparing for variable-range scenarios.
Key Features
- G1 & G7 Drag Model Support: Choose between G1 (flat-base bullets) and G7 (boat-tail bullets) drag models for accurate external ballistics computation.
- MOA & MIL Measurement Systems: Fully supports both MOA and MIL scope measurement systems with a wide range of click values including 1/4, 1/8, 0.1 MIL, and more.
- Environmental Condition Inputs: Accounts for temperature and altitude to adjust for air density, producing trajectories that reflect real-world shooting environments.
- Wind Correction Output: Displays wind corrections in MOA, MIL, or inches at selectable reference wind speeds (5 or 10 mph) for quick field application.
- Auto-Updating Ballistics Range Chart: The ballistics chart refreshes automatically as inputs are changed, with options for a detailed view or a simplified drop chart.
Use Cases
- Precision long-range shooters calculating bullet drop and scope adjustments before a range session or hunt.
- Hunters preparing holdover and wind correction data for variable-distance field shots.
- Competitive shooters validating ballistic data for specific ammunition lots under expected match conditions.
- Rifle owners generating the data needed to order a custom CTS adhesive scope turret label.
- Shooting instructors and students learning how environmental factors like altitude and temperature affect bullet trajectory.
Pros
- Completely Free to Use: The full ballistics calculator is available at no cost, with no account or subscription required to generate charts.
- Flexible Unit & Model Support: Accommodates a wide range of scope types, drag models, and unit systems, making it useful for virtually any rifle and optic combination.
- Instant Chart Updates: Results refresh automatically with every input change, enabling fast iteration and comparison of different loads or conditions.
Cons
- Range Increments Limited to Multiples of 50: Zero and max range inputs must be entered in 50-unit increments (e.g., 100, 150, 200), which can be restrictive for non-standard zeroes.
- Web-Only Access: The calculator is only accessible via browser with no offline mode, mobile app, or downloadable version available.
- Designed Around CTS Product Ecosystem: While useful standalone, the tool is primarily oriented toward generating data for purchasing Custom Turret Systems labels, limiting some standalone use-case depth.
Frequently Asked Questions
What is the difference between G1 and G7 drag models?
G1 is the traditional drag model calibrated for flat-base, blunt-nosed projectiles. G7 is a more modern model better suited to long, boat-tail bullets common in precision shooting. Choosing the correct model for your bullet improves trajectory accuracy.
What units does the CTS Ballistics Calculator support?
The calculator supports both MOA (Minutes of Angle) and MIL (Milliradian) for scope measurement and wind corrections. Range can be entered in yards or meters, and wind corrections can also be displayed in inches.
Does the calculator account for environmental conditions?
Yes. You can input temperature (in Fahrenheit) and altitude (in feet), which the calculator uses to adjust for air density and its effect on bullet trajectory.
How do I use this calculator to order a CTS turret label?
Input your specific scope, ammunition, and shooting condition data to generate a ballistics chart. This chart provides the data needed to create a custom adhesive turret label through the CTS Label Builder.
Is the ballistics calculator free to use?
Yes, the CTS Ballistics Calculator is completely free to access on the Custom Turret Systems website. No account or payment is required to generate ballistics charts.
