I hadn't realized that Prvi Partizan offered 10mm factory ammo, so I went to their website.
They offer three loads:
170gr FMJ at 1115 fps
180gr JHP at 1083 fps
190gr FMJ at 1050 fps
Their website lists their velocity in meters per second, so I used an online calculator to do the conversion.
I don't know anything about the brass... whether it's "soft" or not, but I can tell you that these are not warm 10mm loads. These are very typical of most 10mm "FBI-lite" type loads and are similar to Federal's crap 10mm, Remington's crap 10mm and CCI's crap 10mm... and Hornady's new "exclusive to Cabela's" and also crap Critical Defense load. That is to say, none of these and the Prvi also is really much warmer than the top .40 S&W loads.
These shouldn't be considered proper 10mm ammo like the ammo you can get from Buffalo Bore, Double Tap, Swampfox, Elite, etc etc, or what most 10mm aficionados load at their bench.