what Dave said. Yeah, there are more 'modern' bullets out there, but those dang Remington's just keep killing, and killing, and killing. Consistent, reliable, deadly.
I've always been a big fan of corelokts. Wish I could find some in 243. All I have is hornady factory loaded interlocks. I suspect there will be no notice difference between the two
Other than consistency.
I tried the .243 Corelokts and didn't like how inconsistent they were in on game performance.
One would operate nicely, one would act like it never opened, had 1 shear off at the cannelure at the onside shoulder of a decent bodied buck.
Gave up on em and have never looked back.
Could have been a bad batch as I bought em in bulk and shot the hell out of em.