The ZKW 465 was the ancestor of Brno Fox models (ZKB 680) and later the CZ527. The CZ527 was made in several calibres including: 222 Rem, 223 Rem. 17 REM (US market) 7.62x39, 6.5 Grendel etc.
https://www.czforthosewhoknow.com/blog/2022/10/31/cz-527-the-famous-mini-mauser/

From what I've read, the action length is the same but they had to change some internal dimensions including reducing the length of the rear bridge and stretching the mag well. In other words, if you have an original ZKW 465 keep it as it is. If you want a sweet mini mauser in .222Rem etc, buy a second hand CZ527. or a Fox / Fox 2.