thanks
One thing about going for head shots - other than on small game, I have never taken a head shot (and I have killed a significant number of large game critters). Always go for the boiler room: heart, lungs, liver. Either of those will guarantee a moderately fast kill. Also, look at pretty much any animal - very, very seldom is the head a stationary target. If you miss the brain, you are almost guaranteeing the animal will die a slow, agonizing death.
Personally, if I were looking for my first hunting rifle, and was on an SKS budget, I'd either get one of the excellent entry-level bolt guns or one of the Trade Ex bargains, used. A good used 94 in 30-30 would also be a great brush gun, but it would not be my purchase choice for moose. A 308 or 30-06 would be a much more serviceable caliber.