An unrotated bullet fired from a country made firearm soon loses its velocity, because
Question and options
An unrotated bullet fired from a country made firearm soon loses its velocity, because
- its mass changes
- its caliber changes
- its ballistic coefficient reduces
- its length coefficient drastically changes
Answer and explanation
Correct answer: C - its ballistic coefficient reduces
Without spin (no rifling) the bullet is unstable: it yaws and tumbles, presenting a larger cross-section and drag, so its effective ballistic coefficient drops and it loses velocity quickly.
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