The AirGun Guild

General Category => Contests, Give aways and more. => Topic started by: Alan on April 02, 2020, 05:23:57 AM

Title: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: Alan on April 02, 2020, 05:23:57 AM
Please read the contest rules first. They’re posted above. The only change is the number of legitimate posts has been reduced to five for this one time only! Remember too, the prizes offered here, are not free! This is why we respectfully request that donations be made (https://airgunguild.com/donations/).

The winner may select “one” of the following “gifts”. All have a street value of approximately $200.

An FX Chronograph (https://utahairguns.com/fx-pocket-chronograph-backorder/) as supplied by yours truly.

Or, 8 tins of .25 caliber, Hades pellets (https://utahairguns.com/jsb-hades-25-26-54gr-300-ct/) as supplied by yours truly.

Or a tank bag made by member Loren Mock (https://i.imgur.com/tNBdbqf.jpg%5B/img). Contact Loren for details of color, size, etc.

Without further ado, here are the questions, and additional rules, for this contest.

Assume a round nosed pellet and a constant crosswind of 10 mph. Answer the questions in order, using the letter beside the BEST answer to each question. For example, a proper answer would be in the format “A, B, C, B, D”.  All correct answers by 11:59 PM on April 30 will qualify for a random draw to decide the winner on May 1, 2020.

1. At what point in the trajectory does the wind have more effect on the point of impact?
  A. Near the muzzle
  B. Near the target
  C. At some point midrange

2. At what muzzle velocity would a pellet have less sideways drift at 50 yards?
  A. 600 fps
  B. 800 fps
  C. 1000 fps
  D. 1200 fps

3. What effect causes a pellet to deflect vertically in a crosswind?
  A. Magnus Effect
  B. Aerodynamic Jump
  C. It does not deflect vertically due to a crosswind, only horizontally.

4. For a given impact velocity, would a heavier pellet penetrate more?
  A. Yes
  B. No
  C. It depends on the caliber

5. Wound Channel volume is roughly proportional to which factor at impact, assuming the pellet stays within the target medium?
  A. Velocity
  B. Weight
  C. Energy
  D. Momentum
  E. Caliber


I wish to extend my thanks to Bob Sterne for supplying the questions, and deciding the winner. I thank Loren Mock for his gift to the Guild. And I thank Utah Airguns for shipping the contest "gifts" at no change.

Alan Applegate
Title: Re: Since we’re all sequestered…
Post by: mcoulter on April 02, 2020, 12:01:45 PM
B, D, B, C, C

Thanks for the fun questions.  I can't wait to kick myself when I see which ones I got wrong  :P
Title: Re: Since we’re all sequestered…
Post by: FL Rat Hunter on April 03, 2020, 09:07:44 AM
C, C, C, C, C

Well, that seems odd...  All my answers are C!  Oh well, most were a WAG anyway!  Good luck everyone!
Title: Re: Since we’re all sequestered…
Post by: Steelhead on April 03, 2020, 11:45:09 AM
B, A, B, B, C
Title: Re: Since we’re all sequestered…
Post by: steveoh on April 03, 2020, 03:37:21 PM
Great questions!
Title: Re: Since we’re all sequestered…
Post by: Loren on April 04, 2020, 07:43:01 AM
Yes, good questions!!
Title: Re: Since we’re all sequestered…
Post by: Truckr6969 on April 08, 2020, 02:34:01 PM
Hello all long time no see im gonna say B B C A C
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: archerhmr on April 24, 2020, 03:03:53 PM
A,D,C,C,E
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: strever on April 25, 2020, 07:30:15 AM
ABABC
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: nervoustrigger on April 25, 2020, 04:14:31 PM
A,B,B,C,C
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: rsterne on May 01, 2020, 08:02:50 AM
Well, you guys had me worried for a while.... but the last person to enter, nervoustrigger, got the answers right.... A, B, B, C, C

Congratulations to Jason, please let Alan know which of the 3 prizes you would like....  8)

Bob
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: steveoh on May 01, 2020, 08:11:59 AM
Congrats Jason!

Thanks to Bob for the contest questions!

Thanks to Alan for constantly stepping up and providing exciting prizes for the contests.

Big thanks to Loren for providing the Exceptional Tank Bag!

It’s amazing we don’t have more folks participating.  :-[
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: Alan on May 01, 2020, 08:26:07 AM
Congrats Jason. Please PM me your selection, and your shipping address.
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: nervoustrigger on May 01, 2020, 10:23:11 AM
Oh wow, this made my day for sure!   Thank you, Alan!  And Bob, thank you for coming up with another set of stimulating questions!

With all the airgun tinkering I do, the FX chronograph undoubtedly makes the most sense.  I’ll send a PM shortly. 
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: Alan on May 01, 2020, 12:51:47 PM
The FX Chronograph has shipped! It should arrive Tuesday or Wednesday.

Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: nervoustrigger on May 01, 2020, 01:05:53 PM
Holy smokes, Alan!  You’re on the ball.  Thank you sir!
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: mcoulter on May 01, 2020, 01:20:41 PM
Congratulations Jason! 
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: bnowlin on May 01, 2020, 01:24:04 PM
Congrats Jason.  Heck I donated and forgot to guess LOL  Those would have been my guess ::) ::)
Bobn
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: Alan on May 01, 2020, 02:23:54 PM
Stay tuned guys.

It seems everyone wants an FX Chronograph. Okay, I'll buy that, but I won't buy everyone one! So....

if you read this, rely and let me know if you really would like to have one. If so, I'll will make a negotiated-volume purchase agreement with Utah Airguns. I think I can talk them into a deal, where they drop ship free, for a small discount as well. Any takers????
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: bnowlin on May 01, 2020, 02:36:16 PM
Stay tuned guys.

It seems everyone wants an FX Chronograph. Okay, I'll buy that, but I won't buy everyone one! So....

if you read this, rely and let me know if you really would like to have one. If so, I'll will make a negotiated-volume purchase agreement with Utah Airguns. I think I can talk them into a deal, where they drop ship free, for a small discount as well. Any takers????

What is the approximate cost Alan?
Bobn
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: Alan on May 01, 2020, 04:26:03 PM
The fair-traded price is $199US, plus freight. We will see what they offer. I ask for a group purchase, where I would pay for the lot, and arrange for the individual folks to pay me back.
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: Steelhead on May 01, 2020, 04:40:34 PM
Congrats, Jason! I had so much confidence in my answers that I already ordered a tank bag from Loren!  ;D ;D ;D
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: FL Rat Hunter on May 02, 2020, 04:58:22 AM
Congrats Jason!  You're going to love the FX Chrony! 
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: nervoustrigger on May 06, 2020, 01:50:04 AM
Thank you, guys!

And thank you, Alan!  There was a white box on my desk when I got home from work this evening.  I was excited to get outside and try it.  At first I couldn't get a reading so I fiddled with the profile and sensitivity settings and was getting nowhere.  Then I found the video guide on FX's web site that says to experiment with its fore & aft placement.  As soon as I backed it up a few inches, it started catching every reading. 

(https://i.imgur.com/8Yh0eoa.gif)

The software works well and it's nice not having to transcribe my readings or drag out the lights to do some chrono work at night.  I can see right away that it's going to get a lot of use.  8)
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: mcoulter on May 18, 2020, 11:23:26 AM
Bob and HardAir Mag, thanks for this article.  It answered by questions about question #2:

https://hardairmagazine.com/ham-columns/the-external-ballistics-of-diabolo-pellets/

2. At what muzzle velocity would a pellet have less sideways drift at 50 yards?
(Assume a round nosed pellet and a constant crosswind of 10 mph.)
  A. 600 fps
  B. 800 fps  <<< correct
  C. 1000 fps
  D. 1200 fps  <<< my incorrect answer


FWIW, I also got #1 wrong.  I assume the correct thinking here is that the drift (change in angle of the trajectory?) that occurs near the muzzle simply has more opportunity to translate into a horizontal change in the point of impact?  My incorrect thinking was that the pellet velocity would be lower at the target and thus would be more susceptible to the crosswind.

1. At what point in the trajectory does the wind have more effect on the point of impact?
  A. Near the muzzle  <<< correct
  B. Near the target  <<< my incorrect answer
  C. At some point midrange

It sure is more fun having to think through an answer vs. simply picking a random number  :-)
Title: Re: Since we’re all sequestered… ENTER THIS CONTEST !!!!
Post by: rsterne on May 18, 2020, 02:27:11 PM
You are correct about the wind drift at the muzzle changing the angle, which then is the new course all the way to the target.... Here is constant wind from 0-100 yards....

(https://hosting.photobucket.com/albums/oo221/rsterne/Ballistics/.highres/Windage%203_zpsz0cvnxba.jpg?width=590&height=370&fit=bounds) (https://app.photobucket.com/u/rsterne/p/9a01c10c-4c0e-4fb3-a687-161a492221b2)

Here is wind only for the first 25 yards....  Note the pellet stays on the new course from 25-100 yards.... hitting 4.5" from the POA....

(https://hosting.photobucket.com/albums/oo221/rsterne/Ballistics/.highres/Windage%201_zpsb63v9exu.jpg?width=590&height=370&fit=bounds) (https://app.photobucket.com/u/rsterne/p/3244597e-914a-4339-a0d8-a5b006dde71a)

Here is a reverse wind for the last 25 yards.... It only reduced the drift by 0.4"....

(https://hosting.photobucket.com/albums/oo221/rsterne/Ballistics/.highres/Windage%202_zpsybdxrunu.jpg?width=590&height=370&fit=bounds) (https://app.photobucket.com/u/rsterne/p/693e7ad1-3274-4bd9-93c9-14872710b9ec)

Bob