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Spring Upgrade for a British Longbow

Discussion in 'Anything Airgun Related' started by EJDevon, Mar 13, 2009.

  1. EJDevon

    EJDevon Newbie

    Messages:
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    Location:
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    Hi folks, first post here - I'm looking to upgrade my Webley Longbow's mainspring, the gun is a proper Birmingham-made model and I've had it for about a year now.

    Since purchase I've noticed that the gun is getting slightly sluggish, and now seems to pack less of a punch than my 17+ year-old BSA Supersport.

    I'm quite protective about this gun so I want to steer clear from anything that may harm the mechanism (crap 3rd party mainsprings)

    My first idea was to switch to a Theoben Gas Ram, but I'm told that they don't make a version that will fit my gun. Does anyone know of a decent aftermarket mainspring on the market that I can have my local Gunsmith fit (I'm quite scared about botching the installation/overpowering the gun and destroying it!)

    Any insight on the matter would be greatly appreciated, thanks alot!
     
  2. Andy

    Andy Administrative Staff Member Founder

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    Location:
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    Have you had it over the chronoscope,? just because it feels different to your 17 year old gun does not mean it will have less power.
     
  3. baldytommo

    baldytommo Busy Member

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    Location:
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    Give up and get a good german springer. You know it makes sense!!!
     
  4. EJDevon

    EJDevon Newbie

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    I've not chronographed it, should have asked the bloke at the gunroom to do that last time i was there, no, I'm going by how It feels and audiable velocity (Muzzle to target times) and how it's changed during the time I've had It.

    In response to Baldy - I really can't see any point in getting another airgun, I'm extremely impressed by the performance of this BRITISH!!!! made firearm, and a new Mainspring can only be good. :p
     
  5. noluv6

    noluv6 Engaging Member

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    Location:
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    hi,
    steve pope of v-mach is your man or order a main spring from bar for the longbow.as andy says just because it feels different does not mean any thing.
    if it shooting 10.5ft/ibs+ then dont bother as it is power full enough for hunting.it has probly broke in and smoothend out.if it under 10ft/ibs consider changing spring.
    is it still zeroed at original zero?if so there is nothing a matter.it has smoothend out.
    couldnt agree more with the BRITISH!!!on the look out for a birmingham made longbow or tomohawk me self:).blacking is the best in the business
     
  6. EJDevon

    EJDevon Newbie

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    Location:
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    Hah, come to think of it (I feel stupid for not having noticed this before) the O-Ring on the break-point of the barrel has really been chewed up, It looks a total mess, ordering some new parts from Webley this weekend so I'll be sure to get a couple of new ones - Just for the record, how much power loss do you guys think would be attributable to a worn out barrel O-Ring? It's more likely to be that than the mainspring seeing as how i've only had the gun for a year and haven't used it a huge amount... they say mainspring fade is only noticable after many thousands of shots.

    Shot in the dark, but does anyone on this forum know if a Webley Stingray compatible Theoben Gas-Ram will fit a Longbow? both guns have a VERY similar barrel and mechanism...

    Oh, and no, the gun has been zeroed about twice since I bought it - Also, how would I go about contacting Steve Pope?
     
    Last edited: Mar 14, 2009
  7. Andy

    Andy Administrative Staff Member Founder

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    Location:
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    http://www.air-rifle-tuning.com/

    .
     

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