If the 7.62Tok were available loaded with a quality JHP, I'd consider it as an inexpensive option.
For the OP, some data using Hornady JHPs-
http://www.brassfetcher.com/7.62x25m...ry%20Table.pdf
I think that the Wolf 85 gr. all-copper JHP looks awfully promising with expansion to ~1.5x caliber.