I've seen that site linked on other forums and that's where I got confused.

That site says to start 15% lower for TT-33 actions implying they are weaker. However in the replies after that site is linked a lot of people have failure to eject/feed.

Most of the time I find recipes for 7.62x25 they are for CZ52s.

That's why I wanted to ask if I use CZ52 data am I going to blow myself up or is it a lower charge which will result in failures?