Recent content by jonjo

  1. J

    FX Crown slugs issues

    Your point of impact being low could well be due to liner position. With your set up are you able to rotate your liner to different positions within the barrel. If you can then suggest you index your liner to give the highest point of impact. A lot has been written on here about barrel indexing...
  2. J

    FX Impact MkI Regulator

    Overhauling the reg is very fiddly. Those tiny o rings are a pain to replace without damaging them. The large o ring within the block is difficult to remove without a long pick. I have done a couple and ended up machining some nylon tubes to aid removing and replacing the piston with the...
  3. J

    O ring size?

    Go to FX main website. Top right “Support” go to Dreamline Bottle Adaptor - should get your info there.
  4. J

    Non choked FX barrel liners

    If your barrel is 600 mm you could buy a 700 mm liner and remove 100 mm from the muzzle end thus removing the choke. Carefully machine and re-crown end of liner. 
  5. J

    Did it - extended the polygonal barrel with smooth bore extension

    May I ask how you are going to put a choke on the barrel.
  6. J

    Impact Compact The perfect Storm

    Sir, I had a similar problem with my impact. Loss of accuracy after shooting slugs. Close inspection of liner with magnifier and bright flashlight revealed heavy lead fouling by way of choke. Normal pull through cleaning or polishing would not shift it. I resorted to copper brush of correct...
  7. J

    Name some common FX Impact problems.

    Tiny grub screw that holds pellet probe in place. Check for tightness with small Allen key but do not overtighten as could easily strip threads. If it comes loose can seriously affect accuracy.
  8. J

    Impact Barrel Fouling

    I have an FX Impact in 22 with 600mm STX barrel. Added plenum kit and Huma port and probe. Shoots JSB 18 gr accurately all day long with no issues at about 940 FPS. I have tried slugs, JSB and H&N and FX. I can get them all to shoot accurately but only for about 40 to 50 shots. Then accuracy...
  9. J

    FX Radar Chrono POI Shift

    I got one of the new type which is held on to the end of the barrel with rubber bands. Tried it out and POI with it attached dropped by 11/2 inches at a range of 45yds shooting at 900 fps muzzle velocity. This on a FX Ipact. Seems rather a large discrepancy with such a light weight attached...