Sierra and Barnes Bullets have released a new FREE Ballistic Calculator App, called TrueData™. With Doppler-verified ballistics, precise environmental inputs, and tools that match real-world performance, TrueData™ equips hunters and shooters with the ability to make confident shot decisions and achieve data-driven accuracy. The TrueData App has many notable features including the ability to access atmospheric data reports and a unique Virtual Rangefinder that helps you estimate distances. The App also holds multiple rifle profiles. Visit Sierrabullets.com or Barnesbullets.com to learn more.

This impressive new TrueData App is available for both Android and Apple (iOS) mobile devices. The TrueData App is FREE on Android and Apple stores and can be found by searching for “TrueData Ballistics” in the App stores.

TrueData App Features:

Doppler-Verified Ballistic Library: Instant access to accurate Doppler-verified data for Sierra and Barnes Bullets. Select from multiple drag models, including Doppler-measured curves for supported bullets. These curves capture true bullet behavior across the flight path far beyond the approximations of G1 or G7. With 80+ Doppler profiles and ongoing expansion, the solver adapts to exact projectiles. G1/G7 values autofill for all bullets where Doppler data is not yet available.

Ballistic Coefficient (BC) and Velocity Truing: BC and velocity truing tools to align ballistic predictions with real-world impacts.

Multiple Rifle Profiles: Stores multiple rifle profiles so users can switch guns without re-entering data.

Intuitive Heads-up Display: A unified interface brings together trajectory data, environmental updates, and shot solutions in an intuitive HUD. Every adjustment is instantly reflected on screen.

Bluetooth Connectivity: Automatically imports precise atmospheric data from external meters like WeatherFlow and Skywatch BL for shooters who demand exact inputs without manual entry.

Virtual Rangefinder: App helps users estimate distance when scouting terrain or setting targets without a physical laser rangefinder.

Target Card: Build and store preset targets with their distances and holds, helping the shooter move efficiently between known landmarks or steel targets.

Live Environmental Inputs: Pulls real-time atmospheric data from current locations to keep ballistic solution aligned with actual conditions.

Ammunition Library: App has detailed ballistic profiles for Barnes factory-loaded ammunition.

Stage Timer: Simple countdown timer for practicing transitions, positional shooting or timing drills.

About the Creation of the TrueData App — and Future Updates
“2025 was a big year for product development at both Sierra and Barnes. The TrueData app has been a long time coming — we built, we tested, we refined and we think this App is the most complete and user-friendly ballistic calculator available. We ask that everyone download it, put it through the paces and submit feedback to help us make this thing even better.” — Andrew Sparks, Sierra V.P. of Marketing & Business Development.