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Rifles, Bullets, Barrels & Ballistics Applied Ballistics

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Rate of Twist

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  #1  
Unread 02-21-2009, 03:17 PM
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Join Date: Feb 2009
Location: Mcpherson, Kansas
Posts: 84
Rate of Twist

I have a gun and i want to find out its rate of twist can any one tell how to find this out
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  •   #2  
    Unread 02-21-2009, 03:35 PM
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    Join Date: Jan 2007
    Location: Fairfax County, Va
    Posts: 762
    Re: Rate of Twist

    Take a cleaning rod with a TIGHT fitting patch, insert rod (from breach end with rod guide I hope) until patch is engaged with rifling, place a small piece of masking tape around cleaning rod and place a mark on the tape at rear of action. Now before you push the rod in the barrel go back on the rod about 14 to 15 inches and put another piece of tape on the rod and mark the top dead center of the rod.
    Now push the rod in UNTIL it makes one revolution, now mark the rod at the same reference point you used before.
    Now pull rod back out and measure the distance between the two marks and that is your rate of twist.
    Dave
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      #3  
    Unread 02-21-2009, 08:54 PM
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    Join Date: Dec 2008
    Location: Somewhere in Kansas
    Posts: 247
    Re: Rate of Twist

    And thats just what i told you to do
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