furrybean Posted June 13, 2017 Report Share Posted June 13, 2017 Looks like Im going to be close to the wire with weight with my new rifle What sort of weight loss will there be in chambering and crowning a barrel? Its 3.8kg now but dont really want to loose length Link to comment Share on other sites More sharing options...
Big Al Posted June 13, 2017 Report Share Posted June 13, 2017 Looks like Im going to be close to the wire with weight with my new rifle What sort of weight loss will there be in chambering and crowning a barrel? Its 3.8kg now but dont really want to loose length Are you profiling the barrel or shortening it in any way? The material you remove to cut the tenon and chamber will barely make 2oz, a skim on the crown nothing. Link to comment Share on other sites More sharing options...
furrybean Posted June 13, 2017 Author Report Share Posted June 13, 2017 Ive got about 130g to loose Link to comment Share on other sites More sharing options...
furrybean Posted June 13, 2017 Author Report Share Posted June 13, 2017 Im hoping not to shorten just crown and chamber No reprofile either Link to comment Share on other sites More sharing options...
Big Al Posted June 13, 2017 Report Share Posted June 13, 2017 Thats not going to happen then. Link to comment Share on other sites More sharing options...
furrybean Posted June 13, 2017 Author Report Share Posted June 13, 2017 Looks like a shorter barrel then Cheers Al Link to comment Share on other sites More sharing options...
Big Al Posted June 13, 2017 Report Share Posted June 13, 2017 Have you allowed for removing an inch or so from the muzzle before crowning? Its not normal to just crown the end of a full length barrel as it can be slightly oversize. Link to comment Share on other sites More sharing options...
furrybean Posted June 13, 2017 Author Report Share Posted June 13, 2017 No just weighed it as it stands Link to comment Share on other sites More sharing options...
furrybean Posted June 13, 2017 Author Report Share Posted June 13, 2017 parallel to 0.95" Link to comment Share on other sites More sharing options...
Big Al Posted June 13, 2017 Report Share Posted June 13, 2017 No just weighed it as it stands Whoever does your barrel will most likely remove an inch from the muzzle so that will save you 100g, by the time you chamber it you will almost be there, ideally about 1.25" will get you were you need to be. You should be able to ask the person chambering your barrel to make it the weight you want surely? Link to comment Share on other sites More sharing options...
furrybean Posted June 13, 2017 Author Report Share Posted June 13, 2017 Cheers Al Im just spec'ing what Im buying and getting an idea of weight. The stock I want allowing for 150g for bedding will put me over weight Link to comment Share on other sites More sharing options...
ejg223 Posted June 13, 2017 Report Share Posted June 13, 2017 Sometimes bedding is only 20 grams. Depends on how it is done. I think one looses weight the easiest on the stock. I would hold onto the barrel length profile until all other options are used up. How heavy is your stock? What is it made of? edi Link to comment Share on other sites More sharing options...
furrybean Posted June 13, 2017 Author Report Share Posted June 13, 2017 Im thinking the stock will end up at around 2.2kg fibreglass Link to comment Share on other sites More sharing options...
The_Dogge Posted June 13, 2017 Report Share Posted June 13, 2017 You probably have your answer, but have you checked the barrel mass calculator spreadsheet at http://www.jacksonrifles.com/articles.htm You could add details of your chamber, and see the difference to keeping the bore parallel to see how much mass you will lose. Link to comment Share on other sites More sharing options...
The Gun Pimp Posted June 13, 2017 Report Share Posted June 13, 2017 For me, an FTR rifle build usually works like this: Action 2.1 lbs (Stolle F Class) Barrel 8lbs (30inch taper 1.25 to 1 inch) Scope 1.5lbs (March) Rings, trigger, guard, screws etc. 1lb Bi-pod 1lb (SEB Joy-pod) Stock 4.5 lbs If you use a 3lb action like a Barnard, then something has to give. Link to comment Share on other sites More sharing options...
furrybean Posted June 13, 2017 Author Report Share Posted June 13, 2017 Thanks Vince. That's a bit different to what I had. I'm a metric man so: Action 1 Barrel 3.8 Stock 2.2 Bipod 0.53 Rings 0.15 Scope 0.7 Total 8.38 Link to comment Share on other sites More sharing options...
ejg223 Posted June 13, 2017 Report Share Posted June 13, 2017 2.2kg stock is quite hefty. With carbon you could save a kilo. My take is barrel and scope as good as needed save weight on the stock bipod. edi Link to comment Share on other sites More sharing options...
furrybean Posted June 13, 2017 Author Report Share Posted June 13, 2017 Cheers Eddie but 530g bipod is pretty light Link to comment Share on other sites More sharing options...
Ronin Posted June 14, 2017 Report Share Posted June 14, 2017 Are you going FTR or Open.....? Link to comment Share on other sites More sharing options...
furrybean Posted June 14, 2017 Author Report Share Posted June 14, 2017 FTR mate Link to comment Share on other sites More sharing options...
Ronin Posted June 15, 2017 Report Share Posted June 15, 2017 Suggest you either use a lighter barrel profile (Palma is a lighter alternative to F Class and still very stiff) Or Opt for different stock / lighter scope Link to comment Share on other sites More sharing options...
The Gun Pimp Posted June 15, 2017 Report Share Posted June 15, 2017 Thanks Vince. That's a bit different to what I had. I'm a metric man so: Action 1 Barrel 3.8 Stock 2.2 Bipod 0.53 Rings 0.15 Scope 0.7 Total 8.38 You're only about 5oz over-weight. A SEB joypod, some light rings and you're there. Don't sacrifice the barrel! Link to comment Share on other sites More sharing options...
furrybean Posted September 7, 2017 Author Report Share Posted September 7, 2017 Cheers Vince, What are the lightest rings available? Link to comment Share on other sites More sharing options...
The Gun Pimp Posted September 7, 2017 Report Share Posted September 7, 2017 Usually Stolle but Brian Fox has an excellent selection of light rings at Diggle. Link to comment Share on other sites More sharing options...
ejg223 Posted September 7, 2017 Report Share Posted September 7, 2017 Recently had a one piece ERA Tac Ultra Light mount here. weighed 110grams. Less than half of Spuhr. edi Link to comment Share on other sites More sharing options...
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