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Take it to the range.

The full Zima: Ballistics Calculator for iPhone and Android: the bench, your own rifles and loadouts, four solver models, 130+ features, fully offline. Free on the sample rifles, with all your own gear free to add. Pro calculates your own rifles for $19.99 once, or $14.99 for six months. Nothing renews. Try Pro free for 7 days.

Built something on the Rifle Builder? Export it and open the file in the app.