Flip a coin and you'll be right regardless of whether it lands heads or tails.
Factory ammo for the 6.5 Creedmoor and 7mm-08 isn't going to be on every shelf, but if you plan ahead and order on-line, you're likely to have more options and lower costs. As it is with most things, if you subscribe to the 7-P's; proper prior planning promotes positive professional performance, you'll seldom be caught short.
That said, there's nothing wrong with the common as dirt 243 and factory ammo is both plentiful and inexpensive.
