Old version Hatsan pellets were just called Hatsan Vortex, made by H&N and actually shot very well out of a few of my rifles. The new version Vortex Strike pellets are made someplace in Argentina and probably to cut cost. Might well be the same place making Crosman's new line of "Essential" pellets. Essential for what I'm not sure since by all reports, they cost more than CPHP and CPUM do...lol.
While I've heard/read a few people say they shoot ok, they're seem to be outweighed by the ones who say don't waste your money, Hatsan made a huge mistake changing makers.