This is correct...Old Stevo has opted to convert his interlock to a bonded bullet and it's possible that all the retailers don't have them yet.

The bonded bullet is about .55 each as opposed the their FMJ at .60 and IMO that's a fairly cheap bullet to shoot.

They are new and I'd want to see the results on a few things like Eland, Zebra, bison, or even holstein before I turned one to something that bites back.

If that cheapass Hornady would make a .423 diameter bullet I'd have tested it by now.