Fwb P70FT - fitting a new LW barrel...

Discussion in 'FWB' started by JasonGoldsmith66, Sep 28, 2011.

  1. JasonGoldsmith66

    JasonGoldsmith66 Banned

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    Am looking at having a new LW barrel fitted to a new Fwb P70FT barrel holder ...

    Plan goes something like this:

    1. Reduce weight from original Fwb steel covered sleeve & barrel - with new barrel set up - either, in length ranges of 41-46cm or to 51/52cm (TBA)

    2. custom make a new steel sleeve for a tight fit/bonded to barrel breech end, into Fwb barrel holder...then a seamless alu sleeve continuation only for "x" amount of length..

    3. ...in order to have machine cut grooves for scope rings rail slot, on alu sleeve...then..

    4. Carbon sleeve/shroud starts, and continues till the alu retainer tip of barrel (with a polished off tip , with 1/2 UNF thread...)


    Question:

    - Whats the twist rate on these LW .177 barrels, and what would an ideal length ? (have emailed LW & asked- awaiting reply- stated its for 15/16J rifles spitting out 8.44gr to 10.34 gr Heavies)

    - What barrel would you choose with external diameter wise ?
    9mm
    10mm
    12mm
    14mm
    15mm , or
    16mm ?

    Would it be ideal to have a gap (shroud sleeve - free float) between the carbon inside & barrel ? OR should it be a tight epoxy fit ?

    Carbon by outside diameter
    http://www.shop.carbon-composite.com/index.php?cat=KAT11-10103#Listed by outside Ø

    Thanks for any advice...
     

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    Last edited: Sep 28, 2011
  2. Jon

    Jon Member

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    They are only bog standard spec Lothar Walther barrels which could be found on sub £300 rifles.
    Usually have to buy a crate of 50.
     
  3. JasonGoldsmith66

    JasonGoldsmith66 Banned

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    ....:eek:

    So just out of curiousity...whats fitted on the AA EVII Mk IV ?

    Or, failing this route, how about the barrel from the new super LONG Steyr LG110 FT as an alternate option ?

    PS: would order from TW Chambers...so need for a crate of 50 barrels :D
     
  4. Jon

    Jon Member

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    Bog standard spec from Chambers at way inflated price, i thought £45 was too dear some years back considering what they buy them for.

    Lothar Walther make to a spec, you supply , they make. If its wrong or no good, tough.
    AA and Daystate know a decent spec through trial and error.
     
  5. JasonGoldsmith66

    JasonGoldsmith66 Banned

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    ...there's another option ...

    HW100 barrel, 60cm...from what I understand , made in-house by Weihrauch...or not ?

    Not keen on doing like SA Robbie, or now he's in Canada, Canuck Robbie, in blowing 2 grand for a 60cm custom made barrel...
     
  6. tillygti6

    tillygti6 Tilly's gun stocks

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    im using an ev2 barrel in one of my bsa's cut to just 13" strangely its tightened up the groups and seems to be increasing the bc of the pellet. however havnt got another chrono to test. but it flys incredibly flat......
    and no its not 20ftlb :D
    so id say its somewhat trial and error. some barrels are incredible. some more supposidly topend ones dont perform.
    the 2 best barrels ive had for unfussyness and consistent grouping where the cz barrels out of s200s so likely not a high spec barrel. but would group as well as anything out there.
    luck of the drawer i suppose!
     

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