Quote:
Originally Posted by AndrewM
No it is assuming that all factors are the same so the only difference is the amount of velocity. Assuming identical expansion and identical bullets used. The number could be off a bit to a ways as it is assuming the same amount of expansion but the higher velocity nosler should have a lower rate of expansion and more penetration from this. Not really possible to look at rate of expansion without true rates.
Breaks down to [Nosler Velocity^2- CM Velocity^2] / Nosler Velocity^2
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Using the same bullet, more impact velocity generally results in more expansion, but the expansion can be so great, that the petals fold flat against the shank, resulting in a smaller frontal area. As well, petals could break off resulting in less frontal area, and less mass. There is no way to know for sure which will happen.