Why not go with a premium bullet ? You got a shot at getting a non-resident tag,so your paying good money for the license, then the expensive of traveling,are you paying for a guide or DIY hunt?
My point is why skimp a couple of bucks on a box of bullets? Find a bullet in the 165-180g wieght that shoots good out of your rifle and then make your choice.
Federal Premium offer some good choices in 308 : Accubond,Partitions & Barnes to name a few.
Sure corelocts will work but if it's my hunt i'll take the added insurance of a premium bullet!