The 6 Creed is basically a 6-22/250 AI...not exact but darn close
The 243 AI has more capacity. 243 AI with 8 twists will push the 105g Berger Hunting at 3350 fps with R#26 with ease and with R#23 will push the 105's at 3200 with ease.
The 6x47 Lapua will throttle along with the 105's at 2950 in a shorter case than the creed giving more latitude in the mag box.
The 243 AI with the 115's is awesome.
There is no flies on a 6 XC, either which has a very wide tune node with H4350 with 105 and 115g bullets.
Choose your poison.
