D MAN - that 7.32x25mm Tokarev/30 Mauser is a combat proven round having served both european and Combloc nations. It is an incredibly powerful cartridge. The Chinese found it necessary to develop body armor specifically to defeat this round. The Soviets finally reduced the pistol/sidearm to a defensive level when they developed the Markarov cartridge and pistol. Prior to that the Tokarev was a a combat pistol and I found it to be very effective in the field.
I don't think my hand is as large as yours sounds but my Tok fits me very well. The 1911 is a different pistol that also fits my hand very well, as does the P-08 Luger, the Walther P-Series, the Beretta 34s and 70s, and the S&W Revolvers.
True, the 7.62x25 is not the 357 Sig but I wouldn't have any problem with the idea of sliding my Tok into my belt in place of a 357 Sig level for personal issues but I wouldn't take either one Bear huntin'.
Ron Reed has some smokin' loads for that cartridge and he is one of our sponsors. Check out his site and I think youwill be happy with what you see. HTH. Mikey.