Depends on what you are hunting and how far away it is. I would have thought a 223 woud be good on small game like coyotes out to about 300 yards. The 223WSSM could be a 500 yard gun, but I don't hear too much about guys dragging shooting benches and stools to each calling stand so they can make a shot that long.
The reloading books show that a 223WSSM shoots about 500fps (MV) faster than a 223. The 223WSSM IS a barrel burner. The 223 is gentle on barrels. The MPBR for a 223WSSM with a 55gr BK pill at 3900fps is 415 yards. The MPBR for a 223 using a 52gr BK doing 3350fps MV is 365 yards.
If you think you:
1. Would take a safe, humane shot further out than 350 yards, /ubbthreads/images/graemlins/blush.gif and
2. Don't mind the extra noise,and
3. Don't mind the shorter barrel life, and
4. Don't mind the lesser resale value of a 223WSSM, and
5. Don't mind the higher ammo cost
then you go get one ofthose 223 WSSMs. There are still gun shops with 'em. /ubbthreads/images/graemlins/grinning-smiley-003.gif They are the ones covered in dust. /ubbthreads/images/graemlins/smile.gif