gyr Posted November 17, 2018 Report Share Posted November 17, 2018 I have weighed a 308 24” barrel , it is 2,058 kg. Does someone have the weight of a 20” ?( factory profile). thanks Link to comment Share on other sites More sharing options...
markymark Posted November 17, 2018 Report Share Posted November 17, 2018 1.9kg with the Tac brake on the end. I think the tac brake is 300g so perhaps 1.6kg Link to comment Share on other sites More sharing options...
gyr Posted November 18, 2018 Author Report Share Posted November 18, 2018 Thanks. I am trying to figure out the weight saving depending on length. Also the weight difference with a carbon wrapped barrel. A proof research 24" will save around 500 grams, same as going to a 20" all steel apparently. Link to comment Share on other sites More sharing options...
Ronin Posted November 18, 2018 Report Share Posted November 18, 2018 You could go Hardy or Proof Research and save significant weight without losing any velocity due to shorter barrel good compromise would be 22” finished for 308 If your using 6.5 calibre then 20” isn’t an issue making 2850 FPS putting you in the accuracy node (which is significantly larger with carbon wrapped barrels ) Link to comment Share on other sites More sharing options...
Chanonry Posted November 18, 2018 Report Share Posted November 18, 2018 Well its 20% shorter so as a maximum 20% less weight. So about 410gr, bit less because of taper Or more usefully - the rifle will go from 14.3 lbs to 13.4 lbs. A 6% reduction. Link to comment Share on other sites More sharing options...
markymark Posted November 18, 2018 Report Share Posted November 18, 2018 I was looking into this as well, still am considering it. I was interested to see how much of a diet I could put an AT on, with carbon barrel, lightweight scope etc to see if I could get it down enough for a multi purpose rifle including stalking. FYI if it helps: 308 Proof barrel 1.06kg 16” 6.5CM Proof barrel 1.60kg 18” Carbon barrels as mentioned have the benefit of being stiffer, with less whip increasing your node size. However the carbon barrel only see a decent saving weight wise the longer you go. A 16” steel stock barrel will only be around 200gr lighter. Is that worth £1,500. Perhaps not. Paddy stocks proof barrels and was extremely helpful with my enquiry’s. Obviously there is Mick at Dolphin too. Let us know your thoughts and decisions. Link to comment Share on other sites More sharing options...
gyr Posted November 18, 2018 Author Report Share Posted November 18, 2018 It seems that in order to make a substantial weight difference, you need to go with a short barrel even with carbon. a 20" in 308 is 1,22kg. Do they make 20 or 22" in 6,5 cm?? Link to comment Share on other sites More sharing options...
TWG1 Posted November 19, 2018 Report Share Posted November 19, 2018 I was planning a similar exercise , I have an AT folder, with AX butt fitted which was due to have a 16'' hardy barrel in 7-08 , but I am about to abandon it due to other work pressures. Link to comment Share on other sites More sharing options...
TWG1 Posted November 19, 2018 Report Share Posted November 19, 2018 On 11/18/2018 at 8:45 PM, gyr said: It seems that in order to make a substantial weight difference, you need to go with a short barrel even with carbon. a 20" in 308 is 1,22kg. Do they make 20 or 22" in 6,5 cm?? Paddy Dane has a 18'' proof in 6.5 in stock, It was mine for a build but now thats not going ahead. On 11/18/2018 at 8:45 PM, gyr said: Link to comment Share on other sites More sharing options...
lapua Posted November 20, 2018 Report Share Posted November 20, 2018 Surely if you want a light gun an AI isnt the best starting point. i had a 26” 20lb custom in an aics stock and got it down to 12lb by changing the stock and chopping/reprofiling the barrel. its still as accurate Link to comment Share on other sites More sharing options...
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