According to Quickload, The 356 TSW has a max pressure of 49000 PSI. They list 43946 for the 9x23 Winchester.

I have no idea where either figure actually came from. I have no experience with the 356 TSW, but I always thought that the 9x23mm was loaded some where around 50K.

I do know that I have never been able to bulge a 9x23mm Winchester case, and I am using an unramped barrel. Perhaps I am too conservative, but some of my handloads actually beat the Winchester Silvertips for velocity, though not by much. I decided a factory velocity duplication load was plenty warm in that cartridge, and stopped there.