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Old 15th October 2015, 03:51 PM
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Tench Tench is offline
WHFTA World Champion 2016.
Join Date: Sep 2009
Location: derby
Posts: 1,422

I was once told by Simon Moore at the BSA factory that only barrels destined for installation in a production rifle have the branding stamped on them, and barrels that leave the factory as just barrels do not, but I am sure I once bought a .25 barrel that had the stamp?
They used to advertise their rifles as having a 17" twist. If the machine is set up to rotate the barrel at this rate during manufacture but it grows 10% in length during the process that would equate to the twist rates I have measured them to be. All the ones I have left the factory installed in off the shelf production rifles, the most recent is less than a year old and as far as I know have not changed in twist rate in recent years.
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