collapse

Advertisement


Author Topic: High Altitude Ballistics  (Read 3838 times)

Offline BC CHASER

  • Trade Count: (+3)
  • Sourdough
  • *****
  • Join Date: Apr 2008
  • Posts: 1393
  • Location: Sh!thole WA state
  • Si vis pacem para bellum
High Altitude Ballistics
« on: July 06, 2008, 02:46:53 PM »
How many of you have had a change in the travel of your bullets from your sight in spot to the high country?  I sight in at about 300 ft. and will be hunting at 7-8000 this year I believe it will change but how much?
WA.MT.UT.AZ.KS.NM.CO.AK.NZ.
Lion Pride founding member

Offline actionshooter

  • Past Sponsor
  • Trade Count: (+6)
  • Old Salt
  • *****
  • Join Date: Apr 2007
  • Posts: 6017
  • Location: Olympia/Okanogan
    • https://www.instagram.com/steve.bell.actionshooter/
Re: High Altitude Ballistics
« Reply #1 on: July 06, 2008, 03:50:54 PM »
It will change some but not enough to be concerned unless your shooting longer ranges.
 As an example my .300WM, shooting at 500 yds., has 40" of drop at sea level and 37" of drop at 8000ft. above sea level.

Offline BC CHASER

  • Trade Count: (+3)
  • Sourdough
  • *****
  • Join Date: Apr 2008
  • Posts: 1393
  • Location: Sh!thole WA state
  • Si vis pacem para bellum
Re: High Altitude Ballistics
« Reply #2 on: July 06, 2008, 05:05:25 PM »
Thanks
WA.MT.UT.AZ.KS.NM.CO.AK.NZ.
Lion Pride founding member

Offline JoshT

  • Trade Count: (0)
  • Longhunter
  • *****
  • Join Date: Jan 2008
  • Posts: 738
  • Location: Sweeping the leg!
Re: High Altitude Ballistics
« Reply #3 on: July 14, 2008, 01:47:40 PM »
If you're using turrets a good rule of thumb is about - 1/4 MOA per 2500' in elevation gain...

Example: If my correction for a 600 yard shot is +10 MOA at sea-level... then the correction at 5000' (where  most of my shots on bears occur) is +9.5 MOA.

If you're using a ballistic type reticule... then you probably won't notice much of a difference out to about any sane range. The only way to know is to climb up there and shoot a few rocks... empherical evidence trumps theoretical ballistic gak... contrary to the popular internet belief.
Strike Hard...
Strike Fast...
No Mercy, SIR!

Offline Intruder

  • Trade Count: (0)
  • Sourdough
  • *****
  • Join Date: Sep 2007
  • Posts: 1722
  • Location: Spo-Vegas
Re: High Altitude Ballistics
« Reply #4 on: July 14, 2008, 02:52:08 PM »
It will change some but not enough to be concerned unless your shooting longer ranges.

+1....
Kinda depends on your cal/load too.  But more than likely it isn't a major factor of concern.

 


* Advertisement

* Recent Topics

Toutle Quality Bull - Rifle by moocher97
[Today at 12:00:21 AM]


NEED ADVICE: LATE after JUNE 15th IDAHO BEAR by huntnnw
[Yesterday at 11:20:59 PM]


Mature bulls during late season? by Dark2Dark
[Yesterday at 10:53:27 PM]


Cowiche Unit 368 by Limhangerslayer
[Yesterday at 10:41:37 PM]


2025 Draw Results by duckmen1
[Yesterday at 10:30:36 PM]


Put in for a tag I NEVER thought I would draw. by elkrack
[Yesterday at 10:15:14 PM]


Awesome customer service by deerlick
[Yesterday at 10:13:19 PM]


Commercial crab pots going in today. by Stein
[Yesterday at 09:37:31 PM]


FFL preferences or warnings in Olympia or south Sound area? by ASHQUACK
[Yesterday at 09:34:36 PM]


Boat registration by Stein
[Yesterday at 09:31:52 PM]


Flatlanders coming west in 2024, any WA mule deer outfitter recommendations by Beastmonger1987
[Yesterday at 09:31:21 PM]


2024 deer. Let’s see um! by Beastmonger1987
[Yesterday at 09:11:35 PM]


Muzzy Mission Quality!!! by crabcreekhunter
[Yesterday at 09:11:30 PM]


Unknown Suppressors - Whisper Pickle by xrangerx
[Yesterday at 09:06:49 PM]


Stillaguamish 448 QD rifle tag by Bo_nimrod
[Yesterday at 09:03:46 PM]


Nevada mule deer in the rut, followed by late rifle elk in Arizona by Beastmonger1987
[Yesterday at 08:36:20 PM]


Teanaway bull elk by 1buckdown
[Yesterday at 08:34:43 PM]


Colockum Archery Bull Tag by oldleclercrd
[Yesterday at 08:31:58 PM]


2025 OILS! by Buzzsaw461
[Yesterday at 08:17:27 PM]


Nevada guide draw Mule Deer by Beastmonger1987
[Yesterday at 08:16:15 PM]

SimplePortal 2.3.7 © 2008-2025, SimplePortal