Both of those calculations are based upon the bullets original nominal diameter... admittedly both are somewhat skewed towards the bigger bores. In any case, they are nothing more than a yardstick by which to compare one bullet/cartridge to another with a relative quantitative correlation.
I suppose that by inserting the anticipated expanded diameter of a given projectile you could also generate a useful comparison as well, however, you'd also have to calculate the impact velocity for it to have any relevance.
Hope this helps.
God Bless,
I suppose that by inserting the anticipated expanded diameter of a given projectile you could also generate a useful comparison as well, however, you'd also have to calculate the impact velocity for it to have any relevance.
Hope this helps.
God Bless,
