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Old April 3, 2009, 09:20 PM   #2
B.L.E.
Senior Member
 
Join Date: December 20, 2008
Location: Somewhere on the Southern shore of Lake Travis, TX
Posts: 2,603
There's no need for the rifling to make a complete turn within the barrel. If you take a 30 inch long barrel with a 1 in 30 twist, the bullet makes a complete turn in the barrel, if you cut that barrel down to 15 inches, it only makes 1/2 turn inside the barrel but it still has a 1 in 30 rifling pitch.

Look at it this way, you don't have to be 40 miles away from here one hour from now in order to drive at a speed of 40 miles per hour.
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