# 300BLK Dope — Single Zero POI Calculator > Precision ballistic calculator for .300 Blackout shooters with environmental corrections. (iPhone/iPad app by Reid Thompson.) - Source: https://appshunter.io/ios/app/300blk-dope/id6753189322 (this page in markdown: same URL + `.md`) - Developer: [Reid Thompson](https://appshunter.io/developer/1842948669) - Category: Utilities, Sports - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 26.0 · 1 MB - Languages: English - Released: 2026-02-24 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/300blk-dope/id6753189322/reviews.md ## What is 300BLK Dope? 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. ## Key features - Compare supersonic and subsonic loads - Real-time environmental corrections - Interactive trajectory chart - Detailed dope table - Factory ammo library - Custom load presets - Exportable dope card PDF ## Frequently asked questions about 300BLK Dope ### What is 300BLK Dope? 300BLK Dope is a precision ballistic calculator designed specifically for .300 Blackout ammunition. It helps shooters calculate trajectories for both supersonic and subsonic loads with real-time environmental data. ### Does 300BLK Dope have ads? No, 300BLK Dope is ad-free. Users can enjoy a distraction-free experience while calculating ballistics. ### What devices does 300BLK Dope support? 300BLK Dope is available on iPhone and iPad devices. It is designed to be accessible on Apple's mobile platforms. ### How often is 300BLK Dope updated? The latest version, 1.5, was released on May 4, 2026. Updates typically include improvements and new features based on user feedback and ballistic data. ### Can I compare different types of .300 Blackout loads in 300BLK Dope? Yes, you can compare any combination of supersonic and subsonic loads side by side. This feature allows for direct comparison of different ammunition performance. ### Does 300BLK Dope use real-time weather data? Yes, 300BLK Dope integrates with Apple Weather to provide real-time environmental corrections for temperature, pressure, humidity, and altitude based on your location. ### What kind of ballistic data does 300BLK Dope provide? 300BLK Dope provides detailed dope tables including drop, MOA corrections, velocity, energy, and spin drift. It also offers an interactive trajectory chart with zoom and pan functionality. ### Is 300BLK Dope suitable for beginners? While designed for precision, the app's clear interface and features like the factory ammo library make it accessible. Its focus on .300 Blackout simplifies the ballistic calculation process for users of this specific caliber. ## Version history (last 3 releases) ### 1.5 — 2026-05-04 • New factory load: HSL Ammunition .300 BLK 220gr Subsonic • Corrected bullet length specifications for Phantom Defense Big Brother Rex • Bullet length is now an editable field when creating or editing load presets • Improved speed-of-sound calculation accuracy in humid conditions • Performance, reliability, and code quality improvements ### 1.4 — 2026-02-27 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 ### 1.3 — 2026-02-25 No release notes. ## Related topics [300blk dope](https://appshunter.io/ios/topics/300blk-dope) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*