WALTHER LG400

Discussion in 'General Airgun Chat' started by Spray1Mark, Jun 16, 2018.

  1. Spray1Mark

    Spray1Mark Member

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    Only thing I can think of is that a lot of benchrest air rifles seem to be set at 20J, there was an Attaman for sale a little while back that was 20J.
    However whats the point in the UK? you may as well just use a .22RF.
     
  2. NeilM

    NeilM Well-Known Member

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    To shoot 20J in the UK you would also need an FAC, so, exactly as you say, you might just as well use .22rf.

    In the US it is a different matter.
     
  3. Spray1Mark

    Spray1Mark Member

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    Alexx is in the Netherlands though!

    I went through the 3 dozen or so Anschutz B/A .22's we have at the club last night, I am going to put my March scope on one and see how it stands up against my Anschutz 9015 air rifle.
    As I only shoot .22 semi's fast fire turning target, it will be interesting to see what a B/A with high quality ammo can do.
    Only reason I am interested is because there is a .22RF BR comp in the Hendon League as well as BR air.
     
  4. DeniusValiant

    DeniusValiant New Member

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    It is not in production yet. I had been asking Walther press-service from Oct 2017 about start of retail sale and they didn't answer :(.
    However!
    Our FT team could order and received one rifle i saw it. I suspect this rifle is product sample from IWA 2018.
    They informed me about bad grouping for 25m, it looks like shotgun(. They checked at least 10 stamps of jsb. Maybe barrel has defect!
    This rifle is the same LG400 7,5 joule base and 16j pressure reducer of LG300. The barrel > 50cm.
     
  5. Airlexx

    Airlexx Member

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    Sorry about that!

    I thought that in benchresting there were two power settings, 16 and 20 joules while shooting outside, ( that’s the information i got from some one that is introducing benchrest at our club) but now I understand that there is a oficial “indoor” benchrest at 7.5 joule?
     
  6. Airlexx

    Airlexx Member

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  7. Airlexx

    Airlexx Member

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    Something went wrong there!
    But does it take 300 bar?
     
  8. Michael Brownlie

    Michael Brownlie New Member

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    Hmm 400 at 16J

    Fill to 200bar...
     

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  9. Spray1Mark

    Spray1Mark Member

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    I asked Walther and it can indeed be filled to 300bar, owner opinions seem to suggest it shouldn't be though.

    There are increasing numbers of bottle guns that can be filled to 250 so why not 300!
     
  10. RobF

    RobF Administrator Staff Member

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    This is what i wrote earlier.

    You may be able to read the pressure rating of new cylinders in the writing etched on the side.
     
  11. rogb

    rogb Member

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    With the LG300 Dommi reg, I would not fill over 200 bar.
    Perhaps the LG400 6ft/lb reg can take it at 300, maybe lots of 10m folks fill to 300, I'm not sure but perhaps Sven knows?
    Not sure I fancy the alu cylinder at 300 but maybe I am just playing safe....
     
  12. RobF

    RobF Administrator Staff Member

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    AFAIK the LG400 FT version pictured on the website and seen in testing used the LG300 reg. Internally they are much the same and the parts are transferrable from one to another.
     
  13. hmangphilly

    hmangphilly Floppy Quick Phil

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    Alex .
    You have a lg400 with an lg 300 ( Dominator / (Domi) / 16 j ) reg.

    The working internals of the later lg 300 and 400 are the same .

    The 7.5 j / 10m reg has a larger reservoir than the std lg 400 reg but your 16 j ( dominator ) reg has an even larger air reservoir and is therefore the preferrred choice for the 16 j conversion .............all this is covered on Sven's site .

    lg 400 reg

    (borrowed picture )

    lg 400 valve.jpg

    lg 300 7.5j and 16j regs ..........the 16 j has the longer reservoir section ..............usual trick is to count the rings ............err no that dont work .

    IMG_1174.JPG
    As walther have confirmed you can supply these with 300 bar .
    Whether it is a good idea to do so is another matter .

    Inside is a small green seal .
    Current thinking is that , for longevity and relability ,it might be sensible to keep exposure of this seal to around 200 bar max.

    I have not got a better pic, but it is possible for the green seal material to take a permanent impression .
    if this happens , clearly the material has migrated and the reg setting will alter .

    It is not unrealistic to suggest that there may be a dimensional change to some degree throughout the transition of the cylinder pressure from 300 to 100 ish .

    Small differences can make big changes here



    IMG_2241.JPG

    A rule of thumb is that at full power , we are usually getting more or less 1 shot per bar of cyl pressure .

    If you have the need or the endurance to shoot 200 shots without taking a refilling break , then fair enough , perhaps a 300 bar fill would be the answer .

    We would be interested to hear how the reg copes long term.
     
    Last edited: Jun 19, 2018
  14. Airlexx

    Airlexx Member

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    Ok wel the cillinder is 300 bar, but I was just curious, because there was mentioned that it might be unsafe...
    All our 10 meter competition shooters have the tubes filled at 300.... or as much as the dive bottle holds, and refil when necessery
     
  15. hmangphilly

    hmangphilly Floppy Quick Phil

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    Remember that little project ?
    been meaning to do this for ages ..................

    Lg 400 with a 16 j Walther reg on it ...........
    Not for long ..................:)

    IMG_3249.JPG

    Heres the little spacer to make up the difference between a lg400 and 300 reg .......

    IMG_3250.JPG

    I found a reservoir off an an old Mk1 Walther reg ........it's a nice titanium sort of colour ...

    IMG_3253.JPG

    Mk2, top and Mk1, 16j Walther regs .
    The reservoir is the same size on both versions

    IMG_3254.JPG

    Had a steyr reg to walther conversion for a while .
    Then saw Mick's which was much nicer than mine . ...................so ....................errrr..........

    I pinched it !!
    Sorry Mick .
    Yours was loads nicer ..........and I couldn't help myself

    IMG_3256.JPG

    Had plans for this reg for a week or 2

    IMG_3257.JPG


    IMG_3258.JPG


    IMG_3259.JPG IMG_3260.JPG IMG_3263.JPG
     

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    Last edited: Jun 19, 2018
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  16. hmangphilly

    hmangphilly Floppy Quick Phil

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    If you have spoken to walther and they say it not unsafe , then you should be comfortable with that information .
     
  17. NeilM

    NeilM Well-Known Member

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    What's the advantage of the Steyr reg?
     
  18. hmangphilly

    hmangphilly Floppy Quick Phil

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    They make me happy Neil
     
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  19. NeilM

    NeilM Well-Known Member

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    An excellent reason, and one which I have no argument with.
     
  20. hmangphilly

    hmangphilly Floppy Quick Phil

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    :):)

    Oh I thought of an advantage .

    They make a certain walther purist feel all dirty .

    We know who I'm talking about don't we
     
    Last edited: Jun 19, 2018
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