What is the normal price differnts for high power rifle ammo. Say for the 30-06, .308, 7mm rm, 300rm, 300 wsm,. Seems to me 30-06 and 308 runs the cheapest cabelas is saling 308 for about 110 for 100 rounds and the 7mm and 300 wsm are running about 175 for the same ammo. Both are the winchester super x ammo in bulk