Interesting they didn't do paper.
Supposedly the polymer ball in the hollow point is supposed to improve expansion in paper, wood, and other substances that tend to "fill" the hollow point with material and which then makes the bullet act like an FMJ.
Supposedly the polymer ball in the hollow point is supposed to improve expansion in paper, wood, and other substances that tend to "fill" the hollow point with material and which then makes the bullet act like an FMJ.