manthing Posted January 31, 2020 Report Share Posted January 31, 2020 Hear lots of talk about theses in higher powered airguns but I think I'm not getting the meaning. For example, is a .25 slug liner sumat that goes into a .25 rifled barrel? And how would it still be suitable for a .25 caliber slug... Ederkate a mear sub 12ftlbs shooter will you peeps. Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted January 31, 2020 Report Share Posted January 31, 2020 As far as I can fathom - people who own FX Airguns have lots of money and, often, a massive desire to be better than everybody else. Now, the FX financial dept are constantly encouraging their R&D boffins to stop quaffing flagons of snaps and help top up herr Axellsons coffers so he can afford to shop at Waitrose. In rare moments of sobriety ,said boffins cease barfing and return to their Ikea skrivbords and, armed with their very own crayons, scribble barely believable abstract designs on the back of each others Fag packets. Every evening the cleaning lady (who looks like Ulrika Jonsson's mum) picks up said packets and puts them in the bin. Normally Axellson is hanging around the bins enjoying his "touch of Tyresta" Vape whilst often checking out the Fag packets for any ciggies left inside. Hence the odd, oddball idea is born. When something vaguely feasible strikes Freddie he passes the basic concept to J.K.Rowling to write the advertising blurb before getting Volvo to knock up have a dozen prototypes (these are known as "Limited Editions" to Daystate owners) and then finally superglues the new designs to existing Airguns and passes them to his hired YouTube army to flog. sorry, test, them. The Slug liner is a barrel - not a liner but liner sounds far posher and appeals to the desired victim,sorry, buyer. A Slug is a bullet but again, Slug sounds better. But all this could be wrong as it's written by A/ An FX owner & B/ A Cynic. Quote Link to comment Share on other sites More sharing options...
Ultrastu Posted January 31, 2020 Report Share Posted January 31, 2020 You own an fx .dont you bruno .? U must be loaded and feel far superior to everyone else . Quote Link to comment Share on other sites More sharing options...
villaman Posted January 31, 2020 Report Share Posted January 31, 2020 Slug liner is a liner which goes into a barrel pellet liner goes into a barrel and these are for FX guns normally Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted January 31, 2020 Report Share Posted January 31, 2020 In other words it's a thin barrel supported by a stronger tube and located using O rings - think of it as a barrel that's simply too flimsy to be used outside a stronger supporting structure. And yes, Stu, of course I consider myself superior - my ramblings on this very forum are considered as charitable work and as such are tax deductible - this, in turn, enables me to shop at some of the best Jumble sales in our Ghetto. Quote Link to comment Share on other sites More sharing options...
villaman Posted January 31, 2020 Report Share Posted January 31, 2020 No it’s a liner Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted January 31, 2020 Report Share Posted January 31, 2020 OK young Sir - explain the difference - A barrel is deemed a "the tube of a gun through which a projectile is fired" whereas a liner is....... Quote Link to comment Share on other sites More sharing options...
Chaz25 Posted January 31, 2020 Report Share Posted January 31, 2020 (edited) Surely a liner is part of a shrouded barrel system? my stealth, Crossman and bobcat all run liner systems, good for weight I would think, changeability, cost and harmonics? Edited January 31, 2020 by Chaz25 Quote Link to comment Share on other sites More sharing options...
villaman Posted January 31, 2020 Report Share Posted January 31, 2020 12 minutes ago, bruno22rf said: OK young Sir - explain the difference - A barrel is deemed a "the tube of a gun through which a projectile is fired" whereas a liner is....... Yes you might be right but a liner can be a external or internal and easily removable in my eyes Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted January 31, 2020 Report Share Posted January 31, 2020 An external liner would be a jacket surely? An internal combustion engine has cast iron liners (usually a bit of a mix) but these are not easily/normally removed. TBH this has most likely all come about as a result of FX attempting to manufacture barrels as quickly and cheaply as possible - I believe that their rifling is "press forged" and to make this process easier the barrel needs to be as thin as possible. Quote Link to comment Share on other sites More sharing options...
manthing Posted January 31, 2020 Author Report Share Posted January 31, 2020 Really glad I asked. 😲 Some fantastic answers. 😁 Come on lads Giza chance... If you have, let's just fer instance say an fx .25 gun with the standard (all be it superior 😉) .25 rifled barrel. What's the process involved to end up firing .25 slugs through a .25 caliber slug liner? Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted February 1, 2020 Report Share Posted February 1, 2020 Simples - you unscrew your existing barrel (liner) and replace it with a barrel (liner) designed to shoot slugs (bullets) - youtube is your friend. Quote Link to comment Share on other sites More sharing options...
figgy Posted February 1, 2020 Report Share Posted February 1, 2020 The standard pellet liners have a twist rate and choke to suit pellets. The slug liners have a twist rate and bore with less choke to suit slugs. This should help. Quote Link to comment Share on other sites More sharing options...
Ultrastu Posted February 1, 2020 Report Share Posted February 1, 2020 What i find very interesting about that is as the cal goes up un size the twist rate reduces also . And that a .22 pellet liner has a faster twist rate than a .25 slug liner . Quote Link to comment Share on other sites More sharing options...
figgy Posted February 1, 2020 Report Share Posted February 1, 2020 I noticed that too Ultrastu. .30 has a 1 in 40 twist rate. I know they did a lot of testing with twist rates and choking. Must be the best they found, it's a popular bench rest caliber in their guns. Usually higher weight more twist. In.22 & .25 two different pellet liners A & B. The B liner for heavy pellets in .22 25gr plus. Apparently they do work, I watched a video a good while ago of some fella swapping over and trying them with different weight pellets. Quote Link to comment Share on other sites More sharing options...
Ultrastu Posted February 1, 2020 Report Share Posted February 1, 2020 This has to go back to angular momentum .obviously if your buying a .30 cal airgun .your gonna expect to shoot it accurately long range. A .30 cal has a lot of mass round its edge and as such when spinning ,that rate of spin wont slow down much over its fight .so if we over spin it with too fast a twist rate the pellet ,although accurate up to a point will become more unstable as the range increases . Quote Link to comment Share on other sites More sharing options...
Chaz25 Posted February 1, 2020 Report Share Posted February 1, 2020 Bruno, I think hammer forged barrels would be more accurately formed due to be able to control the mandrels tolerance better than cut rifling plus you would have worked hardening as another benefit at least that's my take on it. Quote Link to comment Share on other sites More sharing options...
manthing Posted February 1, 2020 Author Report Share Posted February 1, 2020 Right so it's another barrel, not a liner that lines the inside of a barrel. Cheers for clearing that up. Quote Link to comment Share on other sites More sharing options...
figgy Posted February 1, 2020 Report Share Posted February 1, 2020 (edited) Manthing its a barrel but not very thick so not self supporting, hence the term barrel liner. The barrel in this set up is the outer blued or blacked steel with breech ports etc and locks into the breech. The liner is fit inside this and held with a locating nut. The shroud fits over the lot. Many rifle barrels have been drilled bored out and new sleeves bonded in. Does this make them two barrels one barrel or liner and shroud ? Glad all that's cleared up 🥴 Edited February 2, 2020 by figgy Quote Link to comment Share on other sites More sharing options...
ditchman Posted February 1, 2020 Report Share Posted February 1, 2020 a liner is what you go on holiday on and have great fun jumping on unattatched grannies...and sometimes they turn over and kill people....and sink and stuff andd get topedoed... whees my glass Quote Link to comment Share on other sites More sharing options...
Chaz25 Posted February 1, 2020 Report Share Posted February 1, 2020 Ditchman…you have single elderly women (grannies) that turn over and kill people?? do they wait face down and just kill lost souls like some messed up northern troll?? I'm bloody never going north of Bristol!! Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted February 2, 2020 Report Share Posted February 2, 2020 That may be so, Chaz25, but the FX barrels were not initially designed to be ultra accurate - they were searching for quicker ways to make a serviceable barrel. Figgy - By the very definition of the word barrel the outer supporting tube cannot be called a barrel - no projectiles are fired through it - if we were to start calling it a barrel then a Mod and a flash suppressor would also be barrels? Quote Link to comment Share on other sites More sharing options...
figgy Posted February 2, 2020 Report Share Posted February 2, 2020 Bruno I can't believe FX set not to make an accurate barrel only a fast way of manufacturing them Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted February 2, 2020 Report Share Posted February 2, 2020 I read it somewhere (cannot recall where) but the idea of "rolling" the rifling into a liner (barrel) came about when they were experimenting with quicker barrel making techniques. Quote Link to comment Share on other sites More sharing options...
Ultrastu Posted February 2, 2020 Report Share Posted February 2, 2020 You do know fx didnt invent it . It was ben Taylor. Of theoben he sold the idea to fx . Quote Link to comment Share on other sites More sharing options...
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