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Thread: Fwb300s springs

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  1. #1
    Hsing-ee's Avatar
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    Quote Originally Posted by Garvin View Post
    I see WG is selling single spring kits for the 300S that it is calling 'stark' (ie extra powerful), for export. It would be interesting to see what power they develop.

    Maccari in the US sells a single 300S spring that makes more power than the standard double springs. I vaguely remember reading they produce 50fps or so more, but not more than that, without making the firing cycle any harsher.

    Alistair (Hsing-ee) fitted a Maccari spring into one of my FWB 150s many years ago and it was a bit more powerful than before, but I think he had a tough time getting it into the cylinder.
    I don't think I managed to get the Maccari spring in, the one that fitted and is in there is a slightly shortened HW50 Mk I spring (I think), a couple of coils taken off. I think it was doing 7 fpe which is not bad for 'one of they target riffles'.

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    Thanks to mick replacement springs are on their way to me
    Morally flawed

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    Quote Originally Posted by Jerry Cornelius View Post
    Thanks to mick replacement springs are on their way to me
    your welcome

  4. #4
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    Quote Originally Posted by Hsing-ee View Post
    I don't think I managed to get the Maccari spring in, the one that fitted and is in there is a slightly shortened HW50 Mk I spring (I think), a couple of coils taken off. I think it was doing 7 fpe which is not bad for 'one of they target riffles'.
    No, I think you did get it in eventually - at least that's what you said at the time. If you didn't, you owe me the Maccari spring back please.

    Only kidding, i don't really care any more.
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  5. #5
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    For interest, I fitted a Maccari spring when I rebuilt and sealed my 300s. It ended up doing about 8ft/lb with 8.44gn pellets.

  6. #6
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    A few years back I had a phase of seeing what I could get out of FWB 300's using springs from Macarri and Pok on here, and up to 8 ft.lbs was achievable.

    Now I am happy to run the standard springs and not risk over-stressing other parts of the rifle.
    People who have been there focus on the fundamentals. People who sit at keyboards all day focus on the trivial and inane.

  7. #7
    Hsing-ee's Avatar
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    Quote Originally Posted by Garvin View Post
    No, I think you did get it in eventually - at least that's what you said at the time. If you didn't, you owe me the Maccari spring back please.

    Only kidding, i don't really care any more.
    Maybe I did get it in .. was it the square section ‘Merlin’ one ... too long ago now. In which case what was the HW50 spring for??!

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    Quote Originally Posted by Hsing-ee View Post
    Maybe I did get it in .. was it the square section ‘Merlin’ one ... too long ago now. In which case what was the HW50 spring for??!
    No idea about an HW50 spring. HW55?

    Square section? SQUARE SECTION? Never! Sounds too much like a 'Hox'. I don't think James Maccari, one of the world's finest spring makers, has ever traded in such horrors, has he?!
    Vintage Airguns Gallery
    ..Above link posted with permission from Gareth W-B
    In British slang an anorak is a person who has a very strong interest in niche subjects.

  9. #9
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    Quote Originally Posted by Garvin View Post
    No idea about an HW50 spring. HW55?

    Square section? SQUARE SECTION? Never! Sounds too much like a 'Hox'. I don't think James Maccari, one of the world's finest spring makers, has ever traded in such horrors, has he?!
    He did, a thing called a Merlin! Maybe it was an Arctic spring, that was the 300 replacement ...

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    Quote Originally Posted by Hsing-ee View Post
    He did, a thing called a Merlin! Maybe it was an Arctic spring, that was the 300 replacement ...
    Blimey! He still does it:

    https://www.airrifleheadquarters.com...88/4452198.htm
    Vintage Airguns Gallery
    ..Above link posted with permission from Gareth W-B
    In British slang an anorak is a person who has a very strong interest in niche subjects.

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    Quote Originally Posted by Garvin View Post
    Is that the same ‘air rifle headquarters’ that’s been going since the 1960’s?

    I bought a fascinating 1967/68 repro ARH catalogue from Cornell publications that have contemporary reviews of all the early 10m match rifles, I think the Anschütz 250 was just about to come out.

    https://www.cornellpubs.com/old-guns...p?item_id=2682

    Great to read quite in-depth reviews from back when these now revered rifles were cutting edge.


    Matt

  12. #12
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    Quote Originally Posted by Garvin View Post
    One you start winding springs, you just can't stop.

    I really like his website, he is magnificently grumpy in the manner of airgun tuners the world over.
    Last edited by Hsing-ee; 19-01-2021 at 09:12 PM.

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