{"product_id":"proof-research-107720-308-win-16-5-1-8-twist-carbon-fiber-sendero-bolt-action-barrel-blank","title":"Proof Research 107720 308 Win 16.5\" 1:8 Twist Carbon Fiber Sendero Bolt Action Barrel Blank","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eProof Research 107720\u003c\/span\u003e\u003c\/strong\u003e is a \u003cstrong\u003ebolt-action carbon fiber barrel blank\u003c\/strong\u003e built on a steel core wrapped in carbon fiber for use in custom rifle builds.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eChambered for the popular \u003cstrong\u003e308 Winchester\u003c\/strong\u003e cartridge, this blank measures \u003cstrong\u003e16.5 inches\u003c\/strong\u003e long with a \u003cstrong\u003e1:8 twist rate\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eIt is profiled in Proof Research's heavy \u003cstrong\u003eSendero\u003c\/strong\u003e contour, with a \u003cstrong\u003e2.5\" breech length\u003c\/strong\u003e, a \u003cstrong\u003e1.20\" shank diameter\u003c\/strong\u003e, and a total weight of \u003cstrong\u003e2 lbs 6 oz\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eSold as a true barrel blank, this part has not been chambered, threaded, or crowned, allowing the gunsmith or custom builder to fit the barrel to their specific action and final configuration.\u003c\/span\u003e\u003c\/p\u003e","brand":"Proof Research","offers":[{"title":"Default Title","offer_id":55077261607234,"sku":"195870","price":852.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_d74a495f-eda8-45cb-a956-721113bee355.png?v=1784757396","url":"https:\/\/centerfiresystems.com\/products\/proof-research-107720-308-win-16-5-1-8-twist-carbon-fiber-sendero-bolt-action-barrel-blank","provider":"Centerfire Systems","version":"1.0","type":"link"}