In 2004, took my SKS and made a 50 yard shot on a doe and she ran about ten yards and just fell to the ground. That cartridge will kill deer just fine.
I've been playing with the 125gr BT's in mine, but they are a .308 bullet.
I think a .310 bullet might work a little better, so I'm inclined to try them. They should work well for deer and other varmits of similar weight.