Do the CZs have a integral barrel recoil lug? The ZKK has one, with a attaching screw.
I know the CZ550 magnums do, just like the Brno602's used to.
Provided more consideration for when I bedded my 375. Used Acraglass behind both the action lug and the barrel lug and seems to have worked - may have been lucky though. I'm yet to do the same for my 458.
Oh yeah, almost forgot, the contact was not equal on both lugs on the original stock - the barrel lug was making contact while the action lug didn't.
