survivalshop Posted July 18, 2016 Report Posted July 18, 2016 Whats with the single groove polygonal rifling ? I saw a Barrel ( AR 15 ) that has single groove polygonal 1-7 twist , never heard of it before . One groove , shoot OK ? Strange ! I know most of the 1903's had two grooves , but one ?
planeflyer21 Posted July 18, 2016 Report Posted July 18, 2016 Never heard of a single groove, polygonal or otherwise.
survivalshop Posted July 18, 2016 Author Report Posted July 18, 2016 http://www.tacticalmachining.com/firearms-parts/ar-15-barrels/16-mid-gas-nib-ext-4150-cmv-5-56mm-1-7-twist.html
unforgiven Posted July 18, 2016 Report Posted July 18, 2016 What are the pros and cons of this setup brother ??
planeflyer21 Posted July 18, 2016 Report Posted July 18, 2016 After looking at the ad, I think the computer geek that wrote the ad put something he/she thought they heard (single groove rifling). I can't find any reference to "single groove polygonal rifling" anywhere else.
survivalshop Posted July 18, 2016 Author Report Posted July 18, 2016 Nor did I , I had to email them , curiosity always get the better of me , its why I asked .
survivalshop Posted July 19, 2016 Author Report Posted July 19, 2016 Received an answer from my email . I replied to ask if any of them have or used one & how did it shoot . From Tacticalmtchining Not a typo. Its a proprietary rifle technique. nate
planeflyer21 Posted July 19, 2016 Report Posted July 19, 2016 Must be real proprietary. Seems like they are the only ones that know about it or use it.
survivalshop Posted July 19, 2016 Author Report Posted July 19, 2016 (edited) I don't want to tell them , yet , but I may be forced to purchase it , to try . I need a Barrel for a build & this may be it . I have a Wilson Combat 1-7 , 16" light wt . to compare it with . Edited July 19, 2016 by survivalshop
MikedaddyH Posted July 19, 2016 Report Posted July 19, 2016 A single groove doesn't throw a good spiral. A half a blade on a fan doesn't push much air. One blade doesn't push much water behind a boat. And you dont see Tom Brady throwing passes with one finger on the ball !
MikedaddyH Posted July 19, 2016 Report Posted July 19, 2016 Watch out guys here comes the one finger fastball. !!!!
washguy Posted July 19, 2016 Report Posted July 19, 2016 I looked at some of my poly's....all I saw was one spiral looking groove Wash
planeflyer21 Posted July 19, 2016 Report Posted July 19, 2016 1 hour ago, washguy said: I looked at some of my poly's....all I saw was one spiral looking groove Wash All the polys I've looked at in detail have a stop sign or pentagon sort of shape, that twists down the barrel.
survivalshop Posted July 19, 2016 Author Report Posted July 19, 2016 (edited) I'm thinking there is some word play going on with that ad ( I thought Polygonal rifled Barrels really don't have Grooves any way ) & I also can't see a single grove as was described & told them so . Nate will get back with me pretty fast , I have met him & spoke to him when picking up Lowers , I may have to go look at this Barrel . Edited July 19, 2016 by survivalshop
survivalshop Posted July 20, 2016 Author Report Posted July 20, 2016 (edited) And it seems Polygonal are Hammer Forged , is what I read . This just gets more interesting by the minute . Edited July 20, 2016 by survivalshop
washguy Posted July 20, 2016 Report Posted July 20, 2016 1 hour ago, planeflyer21 said: Photo and a comparative diagram: I still see a line of sorts on my polys...please dont make me pull em all out Wash
308lrnewb Posted July 20, 2016 Report Posted July 20, 2016 some more custom barrel manufacturers will broach polygonal style rifling.. but single point cutting is like a kreiger barrel. it does not mean 'one groove'. it means a single point was used to cut the entire pattern. which - i call malarkey. Unless that barrel is in the $500 range.. Would have to be one unique cutting bit.
planeflyer21 Posted July 20, 2016 Report Posted July 20, 2016 1 hour ago, washguy said: I still see a line of sorts on my polys...please dont make me pull em all out Wash NEGATIVE!! Pretty sure none of us want to be peering in any of your tubes.
planeflyer21 Posted July 20, 2016 Report Posted July 20, 2016 (edited) Double post whammy! Edited July 20, 2016 by planeflyer21
survivalshop Posted July 20, 2016 Author Report Posted July 20, 2016 WE will see , depends on what Nate's reply is , I'm pretty sure these guys have built rifles around this Barrel , they do a lot of work down there & are really busy . 10 hours ago, washguy said: I still see a line of sorts on my polys...please dont make me pull em all out Wash Are your Barrels , Hammer Forged or are any Hammer forged ?
survivalshop Posted July 20, 2016 Author Report Posted July 20, 2016 Well I ordered one , he said they shoot good , we will see .
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