The mosin nagant and it's cartridge the 7.62x54r is likely the most underrated combo in history. In 2 world wars,and countless other conflicts,russian snipers (including a LOT of women btw) made clean 1 shot kills in excess of 1,000 meters,and sometimes much further. If your eyes and markmanship are up to it,there's NO reason you can't hunt deer with soft point ammo. I'm assuming your 91/30 is still unaltered and unscoped,therefore I would guessitamate 200 yards max range unless you're really good with iron sights.