Originally Posted by Rossimp
... SD has no bearing in bullet performance, i.... It has no definitive application to anything with regard to physics/ballistics.
...., SD is meaningless when it comes to penetration.....


that's about as ridiculous [in the other extreme] as those who worship SD.

how can SD of a projectile in target be considered meaningless to penetration?

Originally Posted by Rossimp
.. SD is a constant, ..


Once an expanding design projectile enters target, SD will variably alter according to changes in weight and frontal area.

-Bulletproof and Waterproof don't mean Idiotproof.