Twist rate for 6.5-06

[RBruce]

What twist rate would be better for a 6.5-06 using the heavier bullets (140 gr and up) 1 in 8 or 1 in 9? --TIA

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[Patrick Chadwick]

9" is a bit slower than the 220mm of a Swedish Mauser. It could be marginal for stabilizing bullets which are much longer than the usual 139/140gn. And the Sierra reloading manual gives all the data using an 8" twist. So I would use the 8" twist.