Airgun Accuracy

Only accurate airguns are interesting!


” Only accurate rifles are interesting” *

This blog is dedicated to my voyages into airrifle accuracy. To share my experiences in the hunt for accuracy from myself and from my rifles. And to give other shooters the chance to improve their shooting and their equipment based on my experiences.

It will focus on pre-charged pneumatic airrifles for Field Target, Hunter Field Target and 50 and 100 meter airgun precision shooting. The first project and reason to start this blog is the conversion of a Walther LG400 airrifle from 7,5 to 16 Joule.

Hope you all enjoy reading this and suggestions are welcome,

Kind regards,

Sven from The Netherlands.

My field target club is: Field Target Schalkhaar

FT logo FT Schalkhaar_3

Field Target range at FT Schalkhaar

Field Target range at FT Schalkhaar


30 thoughts on “About

  1. Hoi Sven,

    Wat een leuke blog! En zéér interessant om te lezen.

    Hartelijke groeten, Joost J. (Die je wel kent van HFT/FT)

  2. Hey Sven, nog nooit geweten dat je blogde, maar leuk je blog te lezen!

  3. Hi Sven,
    Please give me your email address for some questions of the walther LG400 16J

  4. Hi Sven
    Is it possible to get a pressure gauge/quickfill kit for a steyr 110 so I can fit it. Did not want to send the air tube away as it has painted graphics that match the stock.

    • Hi Trevor,
      Have you seen my reply to your question on the Walther LG300 conversion page?
      As far as I know the only DIY option is one where you loose the gauge.
      Cheers, Sven.

  5. Hi Sven,

    Could you, please, send me your email address?
    I have a question or two regarding LG400 16J conversion.

    Could you, by any chance, send me blueprints for the regulator checker for the LG400 regulator?

    Thank you very much!

    Best regards,

  6. hello Sven I would turn my lg 300 7.5J to 16j …
    I would ask you kindly I have to change:

    Pressure moderator 16j to be calibrated at 85 bars ????

    spring Compression 16j

    Gasket seal

    Striker 16j

    Spring Striker 16j

    looking at the drawing or exploded drawing:

    17 Striker 16j

    35 Spring Striker Compression 16j

    73 gasket Seal

    85 Spring Compression of pressure moderator

    51 Pressure moderator 16j

    I have a barrel 42mm… 49mm is needed ?? Because???
    And to change the Striker and his spring is needed ??? why? ??

    I thank you for the answer, and if you will give me your email address x keen coN font. . with you

    • Hello Dino,

      To change a Walther LG300 from 7.5 Joule to 16 Joule all you need is an 16 Joule pressure regulator.
      Drawing no.51 part no.2693038 “Druckminderer kpl. 16J/Pressure Moderator, complete”. To order see: .
      And you have to set it at 82 to 85 bar if you want 16 joule/240 m/s with 8.4grain, or higher velocities. The 16J regulators I ordered lately where all factory set at 72 to 75 bar. This will not get you the full 16 Joule, but it will give you about 15 joule. The LG300 will shoot good with 75 bar at 233 m/s or 15 joule, there is no real need to go higher. Maybe the wind effect is a bit more, but I never noticed.

      I advise to change the valve seal as well. It is not essential to get 16 Joule but functions better. Most LG300’s have a blue or green valve seal which is quite soft. The valve seal for the LG300 Dominator (Drawing no.73 part no.2732505 Ventildichtung/Gasket Seal) is white, much harder and made from Teflon/PTFE. The PTFE seal will live longer and will lower the velocity change when temperatures change.

      You do NOT need the 16J Striker, NOT the Striker spring 16j, NOT the Spring of pressure moderator.
      And you do NOT need a longer barrel. 420mm is more than enough for 16 Joule. All Airarms S400 and S500 rifles have 425mm barrels for example. All my LG300 and LG400 Walthers have the original 420mm barrel.

      I also would advise to check the valve (Drawing 72 part 2620847 Ventil/Valve). The best type and the newest type is the flat sided one. The older ones have a conical (angled) sealing side and cause temperature shift and velocity spread.

      I hope this is all clear, when not then do not hesitate to ask again.
      Best regards, Sven.

  7. Hi,
    Did yoo succeed in the Anschutz 2002ca conversion to 16 joules?
    Kind regards,

    • Hi Ruben,
      The Anschutz 2002CA has reached the 16 Joule limit, much more work involved than a Walther, but 12 fpe/16 Joule is there and the velocity is very constant (2 m/s variation). I have been quite busy lately and could not find the time to write an article. And I have only shot the 16 Joule Anschütz 2002CA 1 time at 50 meters which is not enough to comment on the success of the conversion. And those 50m results where not what I like to see accuracy wise. 5 shot groups of about 3 cm. I tried 4 different batches of JSB pellets, but none of them grouped smaller than 30mm. But as I said, it’s been only one test. Need to clean the barrel (this rifle probably has shot many thousands of 7.5 Joule match pellets without a proper cleaning by the previous owner) and try again. And I would like an regulator tester to see how far up I have adjusted the regulator.
      The plan is to write it all down here, but it takes time.

      But thank you for the interest, and Cheers, Sven

      • Thank you for answering Sven
        I would appreciate it if you could tell me or send me some pictures of what you did to the 2002ca whenever you have time, ivruben at (no spaces)


  8. Hi Sven.
    Do you have some tests with Anschutz convertion to 16j?
    What about zero shift? Do you have speed changes in cold or hot weather?
    I`m thinking about 9015 but this zero shift scare me :).
    So can you give me some more information about it?

    • Hello Rumen,
      I’m still working on the Anschutz 2002CA. It is currently at 16 Joule. A month ago I shot 2 great groups at 50 meter. They were 2 five shot groups that measured 15 and 20 mm. Shot outdoors from the sitting FT position. I put the rifle down to stretch my back and after 5 minutes I shot 4 more groups, but none of these were good, 30mm or larger. This made me suspect that there was something wrong with the bedding and that laying the rifle down had shifted something in the bedding. Originally the 2002 is bedded with one bottom screw in the barrelblock and the front of the barrel is fixed in the front holder. I free floated the barrel to prevent POI shift by warping of the wooden stock. So now the whole system is only hanging on to this one bedding point which is shaped like a cone. This seemed a bit unstable.
      To test the bedding I put an aluminium shim under the barrelblock to give the block more stability and this improved the results. I then bought some Devcon Plastic Steel. A 2-component epoxy that is used a lot for bedding full bore rifles. I took the ally shim out, and bedded the barrelblock in the Devcon. It sits like poured in concrete now. I tried to test this new bedding last week but unfortunately it was very windy. No conclusive results from that sessions, although the rifle felt very predictable which is a good sign.

      The Anschutz 8002/9003 and also the 9015 use a completely different bedding setup. I heard that the 9003 in the Precise stock has no zero shift issues. As the 9015 is bedded the same I suspect no problems there. I don’t know about the wooden stocks or the 9015One stock. But the 8002 Black Air is used for a few years in the UK HFT scene now, and heard no problems there. I think zero shift with the new Anschutz airrifles is something that is not present, or can easily be cured. Check for more info on the Black Air.

  9. Hi Sven
    I have greatly enjoyed reading your blog, about the work you have done to Walther, Anschutz and Feinwerkbau rifles.

    Now I think its time to turn your attention to improving the Hammerli AR20FT!


    • Hi Walter,
      Thanks for the compliments on my blog, great to see that you enjoyed it.
      The Hammerli AR20 is made by the Umarex group of which Carl-Walther Sportwaffen is also a part. But, except for the cylinder, I see very little resemblance with the Walther LG300 or LG400. The design and production of the AR20 is aimed at low cost manufacturing
      I really like the idea behind the Hammerli AR20 to make entering the FT scene more affordable. An AR20 with a Falcon T50 will allow someone to start in FT at a reasonable price level with the gear to get up to a good competition level. And the FT scene would benefit with more shooters entering.

      The big ‘but’ in improving on the AR20 is that it is financially not very worthwhile. Buying a second hand Airarms EV2, Walther LG300, Steyr LG100 or LG110 will give much more value for money and a top class rifle that holds its value much better over time.
      Another ‘but’ is that, for as far as I can see, FT shooters are ‘gear snobs’. They love all the High End stuff and gear that goes into a FT setup. Shooters that don’t suffer this syndrome 😉 , go out to shoot Hunter FT.
      And to shoot HFT there are better options at the same or lower price level than an AR20 (Airarms, BSA, FX, Weihrauch, CZ, and others).

      So I think I need to disappoint you, but I’m not going work on the AR20.
      regards, Sven.

  10. fwb 500 basic suitable for conversion to 16 jules ft air rifle?

  11. Hi Sven. Really enjoyed your comment about FT and HFT. My impression is that if your pockets aren’t deep enough there is no way that you can successfully compete with all the hi tech gear being used.
    I use an FWB Sport, which shoots well enough for me, as well being the best that I can afford.

    • Thanks for your comment, Rick.
      In FT recoiling class your FWB will do fine, and in HFT recoiling class the scope need not be expensive. Here in the Netherlands HFT recoiling class is growing to be very close in number of competitors compared to HFT PCP. It’s very competitive and very affordable at the same time. Current dutch champion, and 4th at the Worlds in Kelmarsh, shoots an HW50 with an affordable Weaver or Redfield scope with max 8 times magnification. How’s that for affordable?

  12. Hi Sven , first of all thanks for the information and time dedicated to us readers. 🙂
    I am quite new to field target, till now I was in the springer phase and is time to move to the pcp’s
    I would appreciate to guide me to what rifle should I buy, I was considering getting a walther lg300 xt anatomic second hand and I found on a webpage and convert it to 16j, AR20ft is out of question , I do not like it, it feels like a toy. Ideally I would like a wooden/laminated stock
    BTW I am a lefty so some models are harder to find,

    Thanks again


    • Hi David,
      The LG300 is an excellent choice. For left hand shooters the LG400 is easier to convert to left hand loading. But when the Anatomic you found is a left-hand rifle that is one problem less to solve. The LG300 is very easy to convert to 16 joule. Just buy a new regulator. I wish you a lot of fun in FT shooting, and with a walther rifle I’m sure you will like it.
      Regards, Sven.

  13. Good day Sven…may I know in your opinion which regulator is more consistent and also material ie coil sprin or washets…many tnx in advance.BTW Im using Lane Regulators but some people say that Huma is better

    • Hello George,
      I have limited experience with other regulators than Walther, Anschutz or Audrius.
      I have one HUMA that is in my CZ200 and that one is doing fine, but I hardly use this rifle. It is very consistent in velocity. I have 2 Audrius regulators in my Airarms S400 and S400 FAC. These have been in there for more than 7 years now, and never failed.
      As I have no experience with the Robert Lane regulators I cannot advise you on that.
      As for coil or belleville washers as springs for regulators: They both can be all right. But the design has to fit with the type of spring used. Belleville washers take less space, but also have a limited ‘stroke’ ie. they compress or move only a small distance. Coil springs are larger for the same spring force but can take much more ‘stroke’.

      My guess is that the regulator design, material used for the valve seal in the regulator and high quality o-rings have more to do with a consistent and long lasting regulator than the choice of coil or washer springs.

  14. Hello Sven,

    Thanks for your great webpage!
    I have been reading it for along time.
    I am currently converting a FWB C60 to PCP

    Living in sweden our limit for free airguns are 10Joules, may get a permit for it and bring it up to 16Joules in the future

    Check this out:

  15. Hi Sven!

    I’d be interested to see more about your anti bounce hammer design. Might you be prepared to post drawings? Also do you think it is necessary to use an anti bounce hammer with a regulator?

    Many thanks for the great blog, I’ve learnt a lot!


  16. Hi Sven,
    Congratulations for your excellent blog, I have been following up on the modifications and improvements you have made to your Anschutz 2002, the fact is that I have a 9003 S2 that I would like to modify to 16 jouls for Field Target, thank you very much for the help and orientation that can give me for the modifications and who to contact to buy the regulator to send to Venezuela. best regards!!

    • Hello Kervin,
      When you want the rifle to be modified you can try Jon Harris or Simon “Tench” in the UK. They have much experience with modification of Anschütz rifles. You can find them on the forum ‘’

      When you have a lathe and a milling machine you can try yourself. The 9003 and 8002 are easier to get to 16 Joule than the more difficult to convert 2002. I have modified my own 9003 and it basically means you need more volume in the valve cavity, same as on the 2002. You need to have a stepped hole to avoid breaking into the holes where the heads of the 4 bolts are. And you need to make a new spring guide and a weaker valve spring. The drawings of the modified 2002 on here show how it can be done (the red part here: ). You can even go a bit larger on the 9003 and make the 8 mm diameter hole larger to 9mm diameter. You do not need to modify the valve or valve block like I did on the 2002. And you also do not need to reduce the diameter of the regulator like some people do (Tench). My 9003 is running 15,5 Joule at the original factory 7,5 Joule regulator pressure. Which is around 68 Bar.

      To convert the 9003 you do not need a new regulator. But if you want a spare one you can buy it from any German gunshop on the internet that is an Anschütz dealer. Buinger, Keuchen, Bauer, Triebel. They do not have the 9003 regulator ion their website but when you send them an email they can order you one.
      Or you can try ‘’ . I currently see a spare part set for 8002 and 9003 that contains a regulator. See: .

      Good luck, Sven

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