I think the subject matter of this one is sheep.
Good question, because the idea makes me wonder: does hunting exert evolutionary pressure on, say, mule deer antlers?
I just searched the googly machine to see what it said, and lo and behold, a MeatEater from December 2020 is asking the same sort of thing (
https://www.themeateater.com/conserv...lers-and-horns)
The author of that links to a research paper and one of the authors is Festa-Bianchet.
He has some multiple links in the article and at least one to a bighorn and hunting pressure/evolutionary change study (there's another, but it isn't loading for me) that says "In all, current harvest regimes in mist hunt areas do not appear to be reducing horn size in bighorn sheep".
As for deer he doesn't link to studies but he's got some pretty reasonable points to make. Good article. Anyone going to the BCWF webinar should probably give this one a gander (It's an article, not a scientific paper, but the article author was one of the authors on the scientific paper he links to, so probably a pretty good source).