Well, since you already own, have tuned, and like the rifle (.270), the ballistic advantage of a 6.5 Creedmoor or 7RM is likely not the largest factor in your choice. Although the Creedmoor does recoil significantly less than the .270 wink

Here is a chart Bryan put together showing the results of his testing using different twist rates and stability factors (SG’s):

[Linked Image]