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    FX FX Crown MKII Safety O-Ring

    My mkii has no o-ring there...
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    HW/Weihrauch Notex piston seals - any thoughts?

    I found them via this website in Germany: https://www.versandhaus-schneider.de/index.php/cPath/90 I'm in Europe and had no issues with delivery, but I did need Google to auto translate the website into English as I could not find a native English option. Edit: I now see that the website does...
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    HW/Weihrauch Notex piston seals - any thoughts?

    No worries - I admit I got a bit confused by your reply 🙂. Here is a pic of the new seal in its new home.
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    HW/Weihrauch Notex piston seals - any thoughts?

    No changes to the piston other than cleaning. Going down to 16 bar from 17 bar for similar velocity (in fact slightly higher) has had a huge effect on cocking effort - which surprised me.
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    HW/Weihrauch Notex piston seals - any thoughts?

    Quick update. The Notex is amazing. Only one tin of .22s so far, but the benefits over the stock seal are immediately obvious. The extreme spread is a couple of fps (I've only chronied about a dozen shots) and my piston pressure is now 16 Bar for 740 fps with JSB 16 grainers - it was previously...
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    Tuning Cleaning FX smooth twist barrels?

    I've got over 15000 shots (pellets) through my 380mm liner and have cleaned it about 4 times in total - not really because i saw a drop in accuracy, but rather sometimes I just feel "it's time". It's as good as new. I only use one pellet brand.
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    HW/Weihrauch Notex piston seals - any thoughts?

    Wow, thank you - that's very valuable info. I've been paying too much attention to PCPs and never really considered variations in chamber size etc to springer/gas piston HWs (which I am head over heels in love with). I'll definitely report my results, as I've ordered the Notex. And yes, let's...
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    HW/Weihrauch Notex piston seals - any thoughts?

    Many thanks! I'm in Europe and might try ordering Vortek from the States. Not sure about who exactly Notex are, other than they're a German company. I found the seals at https://www.versandhaus-schneider.de/product_info.php/products_id/44911, in Germany. Been happy with their service so far and...
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    HW/Weihrauch Notex piston seals - any thoughts?

    Has anyone tried the Notex piston seals (made in Germany)? Thinking of trying them out on an HW90 as I'm having trouble locating a replacement Vortek. Apparently they're CNC machined (not injection moulded) and of course molly infused.
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    Tuning FX Crown power slug upgrade kit install question.....answered.

    I've got what seems to be a (weirdly) fantastic tune on my mk2 for 18grain JSBs, shooting them at 950 fps. I'm running the reg at 95 bar using the 700mm barrel and Huma slug kit with 13.2 gram hammer weight (although I don't use slugs), with power wheel low. My extreme spread is a bit high at...