300BLK Dope

Single Zero POI Calculator

Free · Designed for iPad

Description: BLKDope is a precision ballistic calculator built specifically for .300 Blackout shooters. Calculate trajectories for both supersonic and subsonic loads side by side, with real-time environmental corrections powered by Apple Weather. Features: Compare two loads simultaneously — any combination of supersonic and subsonic G1 and G7 drag models with independent selection per round Miller stability factor and Litz spin drift calculations when bullet length is entered Interactive trajectory chart with pinch-to-zoom, drag-to-pan, and spin drift overlay Detailed dope table with drop, MOA corrections, velocity, energy, and spin drift Factory ammo library — 64 loads from 14 manufacturers with bullet lengths included, ready to load and calculate Save and manage custom load presets Real-time weather integration: temperature, pressure, humidity, and altitude from your location Exportable dope card PDF with full ballistic data Dark mode support Designed for accessibility with full VoiceOver support How it works: Enter your load data (bullet weight, ballistic coefficient, muzzle velocity, drag model), set your zero distance and sight height, and tap Calculate. BLKDope runs a physics-based trajectory simulation and gives you drop, MOA adjustments, velocity, and energy at every yard. Add bullet length to unlock stability factor and spin drift data. Pull live weather from your location or enter conditions manually. Weather data provided by Apple Weather.

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

G1 and G7 drag models — choose independently for each round Spin drift and stability — enter bullet length to calculate Miller stability factor and Litz spin drift, shown in results, dope table, chart, and PDF Interactive trajectory chart — pinch to zoom, drag to pan, double-tap to reset Factory ammo library — 64 loads from 14 manufacturers with bullet lengths included, browse, search, filter, and load directly Exportable dope card PDF now includes spin drift data Negative temperature input for cold-weather shooting Auto-select text on tap for faster editing

Version 1.4

The developer, Reid Thompson, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    • Seller
      • Reid Thompson
    • Size
      • 869.4 KB
    • Category
      • Utilities
    • Compatibility
      Requires iOS 26.0 or later.
      • iPhone
        Requires iOS 26.0 or later.
      • iPad
        Requires iPadOS 26.0 or later.
      • Mac
        Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
      • Apple Vision
        Requires visionOS 26.0 or later.
    • Languages
      • English
    • Age Rating
      13+
    • Copyright
      • © 2026 Reid Thompson
  • Privacy Policy