Recent content by NAProf

  1. NAProf

    30-Yard Challenge

    Tommy, Sorry for the confusion. As Smok3y said the case was for "Match Grade" 8.4 gr pellets. I just liked the case and the fit with the 13.4gr was good once I glued a piece of foam into the top (to better hold the longer skirts). By the way, I tested the "Match Grade" 8.4 gr pellets...
  2. NAProf

    Optics Nightforce NX-8 4-32X50 FFP with MOAR F1 Reticle

    LNIB Nightforce NX-8 4-32x50 rifle scope. The scope has only been used on a benchrest rifle - has never been out in the weather or used hunting. It is a FFP scope with ZeroStop and DigIllum reticle illumination. The fully illuminated MOAR reticle has 1 MOA hash marks. Includes NF labeled...
  3. NAProf

    30-Yard Challenge

    Tommy, For what it is worth I did a lot of testing comparing the "trash cans" to the RD's and found the "trash cans" consistently more accurate in my Crowns. That said, I would get occasional flyers with both. I don't sort or weigh the pellets, but as you do I separate out any obviously...
  4. NAProf

    30-Yard Challenge

    Ed, Sorry about Hoover. I always think of it as the end of an era when a great dog passes. They are joy and love machines who make our lives better. Congrats to both Becky and you! She must be a good sport to put up with you and all of your "big boy" toys! Cheers, Greg
  5. NAProf

    PCP Rifle FX King .25 600mm with Extra Kit (***REDUCED***)

    FX King 600mm .25 with Hunter Brown GRS stock. This is a beautiful rifle in a wonderful stock, but I am not shooting it enough to do it justice. Thought I would get into longer range shooting but that hasn’t worked out as there is nowhere close for me to shoot. I am going to go back to all .177...
  6. NAProf

    PCP Rifle FX King 600mm .25 with Extra Kit (***REDUCED***)

    This listing has been renewed
  7. NAProf

    PCP Rifle FX King 600mm .25 with Extra Kit (***REDUCED***)

    This listing has been renewed
  8. NAProf

    FX PCP Airgun Tuning - Why would the FPS go down when increasing the Hammer Spring at a constant reg pressure.

    Hi SOTL, As a few others have stated the hammer spring tension and reg pressure is a balancing act. If you start with a low reg pressure and a middle hammer string tension the hammer with overdrive the valve and you will have a large valve opening and a high dwell time. That combination...
  9. NAProf

    30-Yard Challenge

    Hi Guys, I haven't posted in a while as I have not been shooting as much as usual. Lots of company including kids and grand kids. Which is good of course! The only drawback is both daughters-in-law are adamant anti-gun (and don't know what an air-rifle is). So to keep the peace my wife...
  10. NAProf

    FX Flexibility of a Crown Gen 2 barrel.

    Hi Again, I was just doing some more thinking about your issue. You said you just got the rifle back from Utah Air after some work. Based on your symptoms I think you have something that was not properly tightened by the techs. Have you checked the four barrel set screws? If they are not...
  11. NAProf

    FX Flexibility of a Crown Gen 2 barrel.

    Hi Guys! Just my two cents - Most of the really fine shooting air rifles have a "floating barrel". Look at the Steyr, Thomas, Walther, Air Arms, etc. and you will find those barrels with the only attachment at the breach block. I believe that this "cantilever beam" model gives a very low...
  12. NAProf

    PCP Rifle FX King 600mm .25 with Extra Kit (***REDUCED***)

    This listing has been renewed
  13. NAProf

    PCP Rifle FX King 600mm .25 with Extra Kit (***REDUCED***)

    FX King 600mm .25 with Hunter Brown GRS stock. This is a beautiful rifle in a wonderful stock, but I am not shooting it enough to do it justice. Thought I would get into longer range shooting but that hasn’t worked out as there is nowhere close for me to shoot. I am going to go back to all .177...
  14. NAProf

    Chronographs FX Radar Chronograph Mk 1

    I am selling an FX Radar Chronograph Mk 1 that works great and is in excellent condition. I am including with the Chrony my rig that I used to attach the Chrony to my rifle using a picatinny rail so that the weight of the Chrony did not affect the barrel and the POI. The rig consists of a...
  15. NAProf

    FX Fx crown mk2 issue

    Agree with the above. It is most likely the o-ring that sits in the action body. It is number D29 on the Crown schematic diagram. Since your rifle is a Mk II it will be part # 19790 10 x 1.5 NBR 90. I am attaching an old video by Sub12Airgunners on rebuilding the AMP regulator just for...