Around 1990 the then-PR guy for Remington sent me some Core-Lokt factory loads for testing, in various cartridges. During my tests I discovered through sectioning bullets,that they didn't have jackets nearly as thick as CLs used to--but that some (not all) had something that looked very much like the Hornady Interlock ring in the jacket. And those bullets also had a secant ogive, just like Hornady Interlocks, unlike the original Core-Lokt Pointed Soft-Points, which had the more conventional tangential ogive.
I informed the PR guy (who I'd known for a long time) of this, and he got pretty PO'd--because nobody in the production end had ever informed him of any of it. He was also nearing retirement age, and decided to pull the plug maybe 2-3 years later.
