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By Runaway Technology, Inc.

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Calculate what barrel twist is needed for a stable projectile or decide what bullet is needed to shoot your bullet with stability in your existing twist. This uses a formula that is more accurate than Greenhill, and also considers atmospheric conditions. You may either set the current conditions, or use the default 'worst-case' ones to ensure stability for universal use.

Also see my other apps:
BulletFlight M
BulletFlight L1
BulletFlight L2

iPhone Screenshot

iPhone Screenshot 1

Customer Reviews

Neat Program!

Excellent program, and it works.


Love the app

View In iTunes
  • $1.99
  • Category: Utilities
  • Released:
  • Version: 0.8.0
  • Size: 0.5 MB
  • Languages: English, French, German, Italian, Japanese, Korean, Russian, Simplified Chinese, Traditional Chinese
  • Seller:

Compatibility: Requires iOS 2.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version: