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  1. K

    FX FX Dynamic Hammer, Valve and Barrel Length Help!

    Hi all, I was hoping I could get some advice, I put an 8mm wildcat/maveric hammer in my panthera .25 hunter compact and it opens the valve fine giving me about 860 fps on the altaros 49.5s. Same thing with my Dynamic 700mm .25, but now, my Dynamic .357 the valve does not seem to open how I...
  2. K

    FX FX Panthera Pro Elite

    Loving the idea of a front cylinder. Hopefully it is sold separately from the chasis because the dimensions are much more appealing than a bottle. I would likely bastardize the chassis and run the factory panthera stock and rear bottle with the hidden cylinder for 600cc total. Let's how there's...
  3. K

    Huben .25 Slugs for GK1?

    my testing agrees with the low to mid 700's for the flattest power curve in the .25 V3 Gk1. I was looking to min mx the extreme spread with the highest possible fpe for 1 full magazine of 17 shots. My best results after testing nearly a thousand rounds across a dozen different slug weights, head...
  4. K

    FX Looking at the DRS classic

    The small plenum and lack of ability to really add a bigger plenum, and yes I am talking about the biggest plenum being the small plenum, the plenum on the stock classic hardly counts as a plenum at 12cc. So the 66cc box plenum that the DRS pro comes with is less than half that of the panthera...
  5. K

    DRS .22/700mm Available

    How much volume does the 'high power' plenum hold? I was under the impression that even the largest plenum was less than 70cc on the DRS so less than half of of the magnum plenum of the panthera
  6. K

    Longer barrels / increased velocity - is there a general "rule of thumb"?

    With fx airguns dynamic block, I've seen roughly 100fps per 100cm of barrel all else equal. Obviously test your own, but its been pretty consistent for me, a 380mm barrel firing a 55.5 slug out of the panthrra hunter at 730fps at max hammer on around 165bar. (Yeah I know it's not a heavy slug...
  7. K

    FX Velocity projection formula given a known weight and speed

    Hi There, I was hoping someone would be able to help me out. I am trying to reduce unnecessary spending and testing time and would like to get a rough idea of what velocities I could expect given a change in projectile weight only. No other changes. Say I reach 1000fps with 26grains .25cal...
  8. K

    FX FX Airguns DRS Pro: How Significant is This Really?

    I used to think this was because FX just wanted to focus on reliability where a lot of semi and full autos have reliability issues. But then I bought a few fx's and realized they still have many of the same issues. We really need the glock of airguns to come out. Near invulnerable orings, works...
  9. K

    FX FX Airguns DRS Pro: How Significant is This Really?

    As for my .02, I am firmly with the crowd of less like a real gun, its hard enough to not get weird looks from neighbors with a big air tank attached to the rifle. Granted thats not an issue for everyone, but its an issue for some. I feel this gun has all the weakness's of the Panthera with...
  10. K

    Huben Huben GK1 Double Tap Issues

    Not sure what does not make sense about a loose trigger or rattling, if yours does not rattle than it would be a defect. The term rapid fire is not defined, pulling the trigger as soon as it resets to me is not rapid fire but rather semi-automatic fire. I have other semi-auto pcp's that do not...
  11. K

    Huben Huben GK1 Double Tap Issues

    Hi There, I am experiencing an odd issue with the GK1, or at least I think it is odd, not sure maybe its working as intended. First thing I noticed after the pistol arrived was the tank was filled, this was odd as the other airguns I own were shipped empty. The second thing I noticed was the...