I've shot a lot of deer and seen a lot more shot. I think bullet performance on deer is over exaggerated as W would say. I think the reason Core Locts have a reputation is because so many of them have been used . I've never heard a claimed bullet failure with a lot of these bullets, but then I've never known anybody to use them.
I've used Hornady Interlock, Barnes X, Sierra Game Kings, Nosler Partitions, Speer... Other than the original Barnes X that didn't expand enough I couldn't tell any difference in any of them.
IOW I don't think I had any results with one that would have differed substantially from another.
Now obviously, big bears, cape buffalo, or such are a different ball game.
As far as reloading, I get some satisfaction out of making my own more than any particular belief that store bought wouldn't work fine.