Although this may apply to another thread more so than this one, the .270 WCF with about any 130 gr bullet has yielded more "drop right there" shots than most bullets out of the .300 WM at similar ranges, unless the old Hornady's are allowed for the 165's.
A standard 150 cup/core out of a .300 WM can be be dramatic, but I've done it enough to not really like it. By and large, I think a decent 130 gr bullet from a .270 does as well or better.
