GMX and ETIPS do more damage than a TTSX because they have more frontal area when expanded.
How do you figure that for the E-Tips? Nosler expects them to open into an 'X' pattern like the Barnes bullets. The difference in frontal area of the expanded bullets is probably so little as to be of little or no consequence.
And the Hornady video shows less frontal area than an expanded TTSX.
Just curious.
