I would look at Copper Creek. They load both the Berger 105 and DTAC 115 in the .243. They will also create custom loads for 7mm Rem Mag using whatever projectile you want. You can even specify COAL. Not super cheap, but much better consistency than you will find from most factory ammo. I have shot a lot of CC ammo out of my .260 Rem and it has been fantastic. Less than 0.5 MOA in many cases.