Proof Research carbon fiber rifle barrel blank in .308 Winchester with 1:8 twist rate and Sendero contour profile. Designed for bolt action builds and requires finishing.
– Caliber: .308 Winchester
– Barrel length: 24″
– Twist rate: 1:8
– Contour: Sendero
– Breech: 2.5″
– Shank diameter: 1.20″
– Weight: 2 lbs 14 oz
– Material: Carbon fiber
– Bore: 4 groove






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