I think I'm going to go with my gut and not fire this stuff after firing my Hungarian heavy ball.
That stuff works very well - it lets the action work almost like there's not a round to be extracted.
Since I polished things up the bolt feels almost like a stock Rem 700 (I know... blasphemy). The Russian stuff I bought may or may not be safe, but it doesn't feel safe and it's really not fun to shoot when I'm dreading working the bolt.
Thanks all... you've been a great help.