I am sure that those are all fine barrels and I am relatively new to re-barreling a savage bolt action. I am working on a 110 CL donor 30-06 soon to be a 25-06 26 inch 1/9 barrel from Columbia River Arms AKA Black Hole Weaponry. I have built several AR 10's with 24 inch barrels from them that are extremely accurate and comparing a 6.5 creedmoor over a caldwell chronograph against a savage bolt my AR shot consistently 150 to 200 fps faster using federal premium gold out of the same box. Does anyone else have any experience with the polygonal barrels? I am really looking forward to see what this sweetheart will do with 110 to 120 gr bullets.