Please check your PM. I agree with Mud's AI recommendation.
I developed regular .270 Win loads while fire-forming to AI. In short, I have .270 Win and .270 AI accuracy loads while fire-forming and barrel break in.
As far as the length, it comes down to a personal choice, preference, hunting/shooting requirement. 28" was original plan and should be plenty. However, I opted for the 30" as it is the same price.
Furthermore, I can always cut it down to 28" if I choose to but I can't do the other way around.
With my 30" + ~2" muzzle brake puts my total length just shy of 54", thus requiring an extra long gun case.
Here's a good article/thread on the .270 Win >>> 270 Win For Long Range Shooting
I voted for my "FREEDOM", "GUNS", and "MONEY" - keep the change - UNK.
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