I used to have an SKK in 7.62x39 but lost it when we had semi-auto confiscations in Australia thanks to our anti-gun government.

Never used anything other than FMJ ammo in it, sometimes with the tips filed off. Wasn't that effective on game, due to the FMJ performance.

Can't see why it wouldn't be equal to a .30/30 with proper bullets and maybe better if spitzer projectiles are used.

BTW still have several thousand FMJ 7.62x39 ammo and may have to buy a bolt action to use it in. Perhaps a Zastava Mini M98 or even better a AIA so I can use the SKK's magazines.

I reckon with good 125 gr ammo it would do OK on smaller deer, pigs and goats, roos not a problem. At shorter ranges.