The Russian steel cased version of the 9.3x64 as made by the Barnaul company is an emasculated, loaded down version of the Brenneke cartridge. While German RWS offers these loads:
184 gr unleaded “Evolution Green” bullet at 3281 fps and a 293 Uni Classic bullet at 2510 fps,
Barnaul lists just a 268 gr softpoint at 2287 fps,
https://www.barnaulpatron.ru/en/catalog/patrony-dlya-nareznogo-oruzhiya/9-3x64/
Those are barely 9.3x62 ballistics. Some members achieve his with a hot loaded 9.3x57. The Russian Dragunov self loading rifle is probably designed to take such a load only, not the original German full power loads.