Originally Posted by shootinurse
From Pac-nor's web site:



Caliber and Twist Rate Chart
Highlighted numbers are standard or popular twist rates.

25 (.257")
3 groove 10" 12" 14"
4 groove 11"
5 groove 9" 10" 12"
6 groove 8" 14"
Polygonal 10"


I have 1:9 barrels on a .250AI and a .25/06. Very happy with the results.



Hmmmmm

8 twist.

Makes ya wonder if that fast twist critter damage at the end is true...

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