Am I the only one that gets nothing of real value of the necropsy photos? Just looks like any bunch of goo to me. I’d rather see the hunter, the rifle, the countryside and a brief story. The cup and core wound channels all look about the same.
As
@Ajsomp mentioned, part of it was and still is to demonstrate that smaller calibers using reliably fragmenting bullets can create adequate wound channels to effectively kill deer and elk.
There is also value seeing differences in wound channels between bullets, and how bullet selection can make a bigger difference in the size of wound channels as opposed to caliber. There is no better way to find out what a bullet does in tissue than actually seeing what a bullet does in tissue, and rokslide is an incredibly unique place to have the amount of necropsy photos that it does compiled and documented in a useful way.
Sometime else that is harped in frequently around here is sample size, and there is something to said for the sheer number of similar necropsy photos for certain bullets like the 108 eldm on here and 77 TMK in the 223 thread in terms of consistent performance.
However, you also hit on a point that is often overlooked to the rokslide crowd, and that is that cup and core wound channels often look more similar than they do different, and that we probably spend more time and brainpower than necessary analyzing the nuances between them when taken in the greater context of hunting as a whole. But Rokslide is a technical hunting forum, and exists for that kind of in depth discussion with other hunting nerds.
For an example of meaningfulness beyond red goo, this is an exit wound from a 175 ABLR on an elk (entrance was a small, caliber size hole):
And this is an entrance wound from a 95 TMK on an elk (no exit, caught in the offside):
They look similar, but when taken in the context of entrance/exit wounds, mean very different things for the shape of the wound channel.
However, at the same time in terms of overall result, mean similar damage (specifically on elk for the 175 ABLR) with very different amounts of recoil (7 mag vs 243).