Danehunter
Well-Known Member
->Proof Research makes theBEST CF wrapped barrels because they are spiral wrapped with the machine wrapping CF strands alternately around the barrel like Maypole dancers weaving in and out around each other with their colored ribbons. This is also how SWIX makes CF cross country ski poles. This is the most uniform and strongest method of wrapping.
->P.R. barrels (and other CF barrels) run cooler than all steel barrels making the throat of the chamber last longer. Research has shown that it is heat cycling that causes barrels to gradually expand internally and this is the main culprit of loss of accuracy. Land height (wear) was not enough to account for the expansion and it was groove diameter that increased!
->P.R. uses Bartlein barrels as well.
These reasons are why my next barrel on my Ruger Precision competition rifle will be a Proof Research barrel.
Eric B.
BTW, What you do not want is a CF barrel made by wrapping it with woven CF cloth. This is a very non-uniform wrap.
->P.R. barrels (and other CF barrels) run cooler than all steel barrels making the throat of the chamber last longer. Research has shown that it is heat cycling that causes barrels to gradually expand internally and this is the main culprit of loss of accuracy. Land height (wear) was not enough to account for the expansion and it was groove diameter that increased!
->P.R. uses Bartlein barrels as well.
These reasons are why my next barrel on my Ruger Precision competition rifle will be a Proof Research barrel.
Eric B.
BTW, What you do not want is a CF barrel made by wrapping it with woven CF cloth. This is a very non-uniform wrap.