Talk:Twist rate

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[edit] Material Copied From Another Website?

At least one paragraph of this article appears to have been copied and pasted directly from another website:

This formula had limitations, but worked well up to and in the vicinity of about 1,800 f.p.s. For higher velocities most ballistic experts suggest substituting 180 for 150 in the formula. The twist formulas used in the Load From a Disk program, featured at this web site, uses a modified Greenhill formula in which the "150" constant is replaced by a series of equations that allow corrections for muzzle velocity from 1,100 to 4,000 ft/s (300 to 1200 m).

Unless this "Load From a Disk program" is featured here at Wikipedia, I assume this text came from somewhere else. FireHorse 01:28, 26 October 2007 (UTC)