Re: 6.5x284 action?
Go to the gunsmithing forums and there is a syicky thread that has a list that references bolt faces. That will give you the calibers your can utilize for bolt face.
Action,,,,,,,most will suggest a long action so you can seat the bullets out there a ways and get the most potential and still allow you to use the rifle as a repeater....
Not sure about optimum barrel lenth. But twist is dependent on bullet grain etc... Most on here seem to go with an 8 or 8.5 or so.
I am no expert but I had looked at doing this as well, and this is what I found to be the case using search function and posting similar questions myself.
“When a long train of abuses and usurpations, pursuing invariably the same object evinces a design to reduce them under absolute despotism, it is their right, it is their duty to throw off such governments. …” Jefferson
We are very close to this point now.