Below is a link (tiropratico.com) to most of the common Manufacturer's rifle twist rates.  It contains information by caliber first, then manufacturer and lastly the model.  It seems to contain a lot of detailed information that is usually hard to find.  I would recommend printing it for future use.

 

http://www.tiropratico.com/pdf/passi_canne.pdf

 

 

 

 

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