Rate of Twist

AZ Jim

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How can I tell what rate of twist (RoT) I have on my .300 win mag barrel ? Can't find any info on it. I read that most have a 1 in 10 RoT, and are designed to stabilize bullets through 200 grns. is this true?


Thanks,

AZ Jim
 

myfriendis410

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You can find out using a cleaning rod. Place a tick mark on the rod and run down the barrel with a patch on it so it engraves on the rifling. Run it through 'til the "tick" comes back up to zero and then measure the two distances. There's your rate of twist.
 


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