Brown bear, Silver bear, Golden bear.... I have never had a good grouping from any of them in any caliber that I own. In 7.62x54R, the Barnaul stuff seems to group well at 200 yrds. I know it did better than the Wolf Gold for me.
Here's a link for Barnaul 7.62x39
http://www.wideners.com/itemdetail.cfm?item_id=8724