Bugger,
Thanks very much.
One of the biggies I've discovered is that big game bullets can change with time--both ways. I started using Hornady Spire Points back when they did not include the Interlock ring. They still worked pretty well, but apparently that was because they had a slightly harder-alloy core than some other cup-and-core bullets of the day.
Remington Core-Lokts had much thicker "sidewalls" back then, one reason they worked so well. That changed with the Pointed Soft-Points in the early 1990s, though not with the round-nose CLs.
The same sort of thing has happened with a lot of bullets--both ways, making them both "softer" and "harder." It's hard to keep up!