Comparing wound channels, pressure, and penetration.
This is interesting enough. Apparently there’s a shooting myth that says it’s a good idea to load rifle bullets backwards–that is, with the bullet base upward and the point sticking down into the case. This seems, well, backwards to me, but this guy decided to test it. I decided to watch and see what happens.
The cartridge is 308 Winchester, and the bullets are 147 grain pointed FMJ boattails. These bullets have some exposed lead at the base, so a backwards presentation more-or-less creates a big, wide, jacketed soft point.
He fired each into a block of ballistic gelatin, at a steel plate, and through milk jugs.
The ballistic gelatin results show a predictable result: Explosive disintegration and reduced penetration. The steel plate test also indicated decreased penetration.