I saw that article.

It has certainly been reported on AccurateReloding a lot with the CZs.

But if they were bedded they would be OK. I suspect on the ones that crack the second recoil lug on the barrel is not contacting and then is no cross bolt in the wood behind the action recoil lug. To compound the problem there is not much wood behind the recoil lug and the action recoil lug is small.

The only other action I can think of (apart from other Mauser based actions) that have a small amount of wood behind the recoil lug is the Weatherbys. But the bigger Weatherbys come with a big lug mounted on the barrel reinforce, about an inch out from the action and it is epoxied bedded, plus there is a cross bolt inletted into the stock and the action recoil lug is much deeper, similar to M70.

Also, if the CZ did slip back a bit in the stock it would be easy for the stock to crack near the tang area as the tang does not sit on top of the stock like a Wby or Rem 700. Some M70s can have problem with the tang because although it is like the Wby and Rem 700 tang it has a square section that extends down so as to lengthen the screw hole for the tang screw.

But a CZ correctly bedded would have no problems.

Mike