factory ammo has a lot more options in .243 ... but 6mm creed has hornady factory ammo loaded with the 105 hpbt. and thats a real momma jomma. i wouldnt turn down either one but once the creed has a little more support i think itll be the superior offering.
Never saw any 105 offerings from Hornady in factory ammo, however I have seen 103 and 108.