In the practical world, the 223, 243, 270, 30-30, 308, 30-06 still do it all.

I don't own a 6.5 Creedmoor, but it seems like one of the more practical developments to come along in recent times.

New offerings keep it interesting. For the competition shooters and specialty shooters, the 'improved' ballistics are a big deal. For most shooters and hunters, the difference is of no consequence.