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Similar BCs but different weight and/or caliber

 
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Old 05-09-2001, 12:46 PM
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Similar BCs but different weight and/or caliber

It's my understanding that if you launch two bullets at the same velocity and those two bullets share a common BC they will have very similar drop and wind drift characteristics regardless of the bullet weight and caliber differences.

More graphically, a 55 grain .223 bullet with a BC of .300 and a 250 grain .338 caliber bullet with a BC of .300 both launched at 3000 fps will have nearly identical drop and wind deflection characteristics.

Is this essentially true?
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Old 05-10-2001, 07:57 AM
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Location: Arco, ID 83213
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Re: Similar BCs but different weight and/or caliber

Dave,

Yes, it is essentially true. Ballistically speaking they will have identical drop and drift. In practice they will present slightly different cross-sections to the wind, or a different sail, and the actual drift is likely to be slightly different.
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Old 05-10-2001, 08:03 AM
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Re: Similar BCs but different weight and/or caliber

Warren

Thanks for the reply.

I didn't give much thought to the sail area concept in wind drift so thanks for the new additional info.
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