Search results for query: *

  1. FredAZ

    What Binoculars Do You Prefer?

    Leupold RBX-3000. Hard to find but worth it. Or any other BX-5 level Leupold. Have the 10x50 and 15x56 too.
  2. FredAZ

    Scope light gathering

    Schott makes the raw glass used in many scopes, not just Zeiss/Swaro/Kahles. Grinding, polishing and coatings are as important, if not more, than the raw glass. The who/what/where these processes are done are more of a mystery. MeOpta does make their own lenses - one of the very few who go...
  3. FredAZ

    Scope light gathering

    The physics of the glass sizing give you a maximum. Gathered light is easily squandered along the path and that's what impossible to tell without testing. It's all about the glass quality and coatings.
  4. FredAZ

    Scope light gathering

    All the light funnels through your pupil at a diameter of 7mm max. How the scope gathers that light at the front and reduces the stream to that diameter differs from scope to scope and does effect net transmission. Glass size, type and especially coatings all make a big difference in...
  5. FredAZ

    .22 For EBR

    Pellets and bullet/slug do react differently due to the swapped Cp/Cg relationship of pellets but they still cone and AJ is coning-driven. The HORIZONTAL component of AJ damps out quickly thus is NOT the reason for being pushed sideways in the wind. Vertical AJ is real and is TOF...
  6. FredAZ

    .22 For EBR

    Mike - the math and physics apply regardless of velocity - check the equations.
  7. FredAZ

    .22 For EBR

    Reading from James A. Boatright Revised: March 2018 paper on coning, we find this statement: "However, this horizontal jump AJh only applies at about 10 yards downrange. By about 20 yards downrange, the continuing coning motion of the bullet has almost completely cancelled it to zero net...
  8. FredAZ

    .22 For EBR

    Well -- best would be an wind tunnel. Otherwise you would probably need to read up on Barrowman. Remember, CP is a crude approximation for convenience. What you really want is a drag-vs-velocity profile which is used by some ballistic calculators for specific PB bullets - I've not seen a...
  9. FredAZ

    .22 For EBR

    Forward BC is NOT REPRESENTATIVE of the side BC. You can not conflate those numbers. How a pellet flies in the presence of wind is different from how it flies without wind and the FORWARD BC is not the indicator.
  10. FredAZ

    Tom Adams WINS the 100y EBR Event!

    Nicely done - sure hope Tom made a nice trophy for first this year ;-)
  11. FredAZ

    SUPER DEAL ON HALF PRICE CRIMSON TRACE SAME JAPAN FACTORY AS NIGHTFORCE!!!

    Let's try again. I saw a factory mentioned - how do you KNOW?
  12. FredAZ

    SUPER DEAL ON HALF PRICE CRIMSON TRACE SAME JAPAN FACTORY AS NIGHTFORCE!!!

    How do you know where they are made?
  13. FredAZ

    How does Escrow.coim protect the SELLER?

    EXACTLY -- VERY ONE SIDED. Say you want to sell something that is somewhat rare with limited audience so local sale is unlikely such as a very special airgun - how would you sell it to a remote buyer and feel protected? PB's use FFL's which extract a modest fee. If only this service...
  14. FredAZ

    How does Escrow.coim protect the SELLER?

    Ok - see the "ad" in the classified for Escrow.com. Seems like a payment middle-man with limited value. How does this protect against all the claims of "wrong merch" or "I didn't like it so I returned it, only I really returned a brick" type of scams? So they hold payment - who holds the goods?
  15. FredAZ

    In Search for the Perfect Airgun Scope

    You need to buy better scopes -- "high dollar" is not always "HGH QUALITY" and I think you've not experienced high quality.
  16. FredAZ

    WIN a Daystate Red Wolf .177 HP PCP and More!!

    $4321.09
  17. FredAZ

    Heat Source for TP removal

    Wow - never needed a torch to remove Toilet Paper. Again - WTF is TP in this instance. Introduce your acronyms!
  18. FredAZ

    What's All The Air Gun LDC Manufacturers for 2020?

    What's a LCD??? Liquid Crystal Display???? PLEASE fill us in on acronyms....common practice is to introduce them upon first use. This is a pet peeve of mine as it is a lost curtesy
  19. FredAZ

    My new Daystate Pulsar

    Pick a Wolf - any Wolf......red, blue, safari or delta. Can't go wrong.
  20. FredAZ

    Standard setup for airgun noise testing?

    OPEN FIELD TESTING -- used for ALL types of emission testing - they ONLY way to avoid room interactions. Either this or an anechoic chamber -- who has one of those handy???? I know you all like to reinvent the wheel with simple "alternatives" but the scientific/engineering community already...