Search results for query: *

  • Users: JimD
  • Order by date
  1. J

    Better wood on air rifles

    I make furniture as a hobby. 4 bedroom sets in my house, 3 in each of my kids houses. A dining room table with 10 chairs for my house, a kitchen set for each of my kids. I've also made stocks for 4 of my PCPs. Only the little stock pieces for my Marauder pistol are special and the wood is...
  2. J

    Filling an outdated carbon fiber/aluminum SCBA bottle

    I think the best source of well documented data on SCBA tanks is the Navy report. They have never had even a leak from anything other than damage to threads caused by hydro testing. No "explosions". They use thousands of tanks. Solid metal tanks might "explode". There was a video on this...
  3. J

    Carbon fiber tank question

    I don't own any of the under 500W compressors but I agree with the sentiment that they are meant for filling guns. The CS4 may be an exception but due it's size my understanding is that a bottle fill takes hours. I use my Yong Heng compressor, approaching 3 years old at the moment and going...
  4. J

    Joe Shneehagen accident

    I am a retired mechanical engineer and many years ago I had classes on materials and creep behavior. I agree that aluminum always creeps, it just creeps more at higher stress. Steel kept below it's yield stress does not creep. But that does not make me want a steel air tank. I would take...
  5. J

    FX FX POI Shift : SOLVED ?

    I used to think that the FX externally applied rifling with the associated and seemingly necessary thin barrel was an interesting and possibly very good idea. Then others said the liners are not smooth inside as I assumed but are at least as rough as conventional barrels. Then I heard of POI...
  6. J

    N/A Great Pcps for under $600

    How about the SPA P35X. It's heavy for my tastes at 2400 grams which must be about 7 lbs. But it has a 530mm barrel, a wooden stock, and a 60cc plenum. Plenum volume is a shortcoming of my P35s in 25 particularly and this should solve that nicely. Huma Air has them at under 500 pounds which...
  7. J

    Ft-Lb energy and BC

    I look at BC as something best measured instead of calculated. I use values published by hard air magazine or, if they are not available, data from the ammo provider. What I really want to know is the bc for that projectile from my gun but they can't provide that. If you want it bad enough to...
  8. J

    Nosey Neighbors?

    I shoot in my backyard into a pellet trap filled with rubber mulch most of the time. I have a "know your limits" target too and one metal squirrel target that get some pellets too. Behind my yard is a large lake with the homes on the other side over 200 yards away. I am shooting down so the...
  9. J

    Veyron sale

    Looks like the 3-12 is the best deal. I prefer the 6-24 SFP which was not shown on that link. I got the one I have from Krale. But if you are in the market for a 3-12 this could be a good deal.
  10. J

    Coyote #9 - finally

    It looks to me like the shot impacted about an inch lower than it needed to for the coyote to drop immediately. I think it probably died but it might have taken days. My experience is almost exclusively squirrels. I've killed the grand total of 1 small raccoon and no coyotes. I've taken 58...
  11. J

    Wind, and groupings.

    I sometimes play with wind speed in Chairgun to get an idea if it is credible that the wind affected my results. You can input both the wind speed and the direction (and the bc, velocity, etc.) and it will give you the drift. I'm sure other trajectory programs do this. My best 100 yard groups...
  12. J

    How accurate is your chronograph?

    The only thing I do is compare chronographs. I don't often compare them but I have. My inexpensive Chinese chronographs used to be a few fps different from each other but I shot one of them and I think the replacement compares better but I would have to do a more controlled comparison to be...
  13. J

    N/A Thoughts on first shot low

    My P35s, made by SPA, will have a lower velocity on the first shot if I turn the hammer spring down 5% from the setting that gives peak velocity. At short range it doesn't affect POI much but at longer range it would. After the first shot the velocity is back where it belongs and steady. With...
  14. J

    1st time buyer of PCP Airgun disappointed

    I've never owned a Hatsan or a big bore. Hatsans seem too heavy to me. I own three SPA guns, P35s. SPA makes the Notos even though they do not sell it under their name. I have had to replace O-rings in two of my three P35s. I've had them 2-3 years. Based upon how the replacement O-rings...
  15. J

    N/A Looking to get into PCP

    Arken EPL-4 is my most expensive scope and I really like it except for the combination of FFP and a really fine reticle. It is a 6-24 and the reticle is not visible at 6X and barely visible at 8X. I like 6-24 for airguns because you can hunt at 6X easily and 24X is good for short range target...
  16. J

    Snowpeak Snowpeak/Artermis P35 .177 FAC Thread

    Yes, the angle of the "disks" is a clear sign that they are damaged, broken. Those discs are springs. They are slightly cone shaped and act to hold the regulator closed until the pressure on the barrel side of the regulator falls and the pressure in the gun's air tank pushes the valve open...
  17. J

    "No airguns allowed here"

    The only range I've taken my airguns too is not staffed and they have no rules against airguns. I think the forestry department or something is resonsible for it. I was questioned once by a PB user what I was shooting so I offered to let him try it out. He fired off a couple shots and seemed...
  18. J

    Expired tanks

    If you search for it you may be able to find the pictures of tanks damaged from overpressure. They were posted here, not by me. The metal tank did pretty much "explode" and was not at a huge overpressure. The carbon fiber wrapped tank had a big chunk of the carbon fiber removed and still...
  19. J

    Careful when filling

    I'm not loosing any sleep over filling my expired Scott tank. I also agree with the sentiment that Joe, the man injured, getting well is more important than my curiosity. But at some appropriate time it would be nice to know if the tank in question was intended to be used at the pressure that...
  20. J

    Benjamin Marauder Pistol Leaking from Pressure Guage

    I've never purchased a gage for my Prod but the few parts I have purchased from Crosman were very reasonably priced and delivered quickly. As I remember it, you pretty much have to call them. They may want you to give them a part number from their diagram but I think you can get it on their...