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Old December 22, 2008, 03:23 PM   #3
DoctorXring
Senior Member
 
Join Date: May 1, 2002
Location: The Republic of Texas
Posts: 392
Ballistic Coefficient

.

On the 30-06 rounds, it has nothing to do with bullet weight, as such.
It depends on the bullets B.C. or ballistic coefficent. A round nose
180 can have lower B.C. than a spitzer 150 and the 150 would therefore
have less wind drift. added -- this is at equal launch velocity.


On the 22 LR scenario, the slower bullet improved the accuracy on the distant
target because the bullet did not have to transition the sound barrier. When
a bullet that has been going super sonic falls below the sound barrier in speed,
destabilization occurs. You either want to stay above the speed of sound for
the whole trip, or below it for the whole trip, to the target.


dxr

Last edited by DoctorXring; December 22, 2008 at 03:48 PM.
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