Similar BCs but different weight and/or caliber

[Dave King]

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?

 

[Warren Jensen]

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.

 

[Dave King]

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.