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Max Online: 16728 @ 03/25/12 08:51 AM
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#6988701 - 12/08/17 01:52 PM Altitude and Dope
Cattleman Offline
Tracker

Registered: 02/09/13
Posts: 884
Loc: Palo Pinto county
I'm going on a Mule deer hunt next week around Fort Davis and I need to know how much my dope will be off going from 900 ft to 4800 ft elevation. I plugged my info in Geobalastics and it's telling me that I will only be a tenth or two off . That doesn't seem right to me. Is this correct?

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#6988737 - 12/08/17 02:17 PM Re: Altitude and Dope [Re: Cattleman]
jeffbird Online   content


Registered: 03/09/09
Posts: 3214
What is the maximum distance you will take a shot?

What bullet and velocity?

Apart from that, checking the zero when you arrive there will reduce the difference, if any.
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#6988740 - 12/08/17 02:18 PM Re: Altitude and Dope [Re: Cattleman]
FiremanJG Online   content
THF Celebrity

Registered: 12/16/08
Posts: 25571
Loc: Wolfe City, TX
Generally, you will not see significant changes until 500 yards. The farther out you shoot, the more temp and DA change velocity decay, and therefore change elevation corrections.
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#6988831 - 12/08/17 03:21 PM Re: Altitude and Dope [Re: Cattleman]
Cattleman Offline
Tracker

Registered: 02/09/13
Posts: 884
Loc: Palo Pinto county
Thanks. I probably won't shoot a deer if it's over 400-500 yards especially if it's windy . Pigs and coyotes you bet .

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#6988970 - 12/08/17 04:46 PM Re: Altitude and Dope [Re: Cattleman]
jeffbird Online   content


Registered: 03/09/09
Posts: 3214
Just check your zero when you arrive out there and rerun the local conditions on a phone app and you should be fine. Good luck! up
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#6989377 - 12/08/17 11:31 PM Re: Altitude and Dope [Re: jeffbird]
patriot07 Offline
Veteran Tracker

Registered: 11/06/11
Posts: 2485
Loc: Royse City, TX
Originally Posted By: jeffbird
Just check your zero when you arrive out there and rerun the local conditions on a phone app and you should be fine. Good luck! up
Yep, that's what I'd do. Let it calculate your DA and your DOPE if you already have a good known velocity and BC.

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#6989525 - 12/09/17 07:50 AM Re: Altitude and Dope [Re: Cattleman]
trigger time Online   content


Registered: 08/05/09
Posts: 175
A tenth or two sounds about right at 5-600 with a 4000ish change. Zero wont change, but pick you a rock at 500 and let one rip with a spotter. Also good luck!

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#6989654 - 12/09/17 10:00 AM Re: Altitude and Dope [Re: Cattleman]
RiverRider Online   content
THF Trophy Hunter

Registered: 11/11/07
Posts: 8218
Loc: Wise Co.
Title of the thread had me thinking the topic was going to be the 1960s.
geekfreak
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#6989659 - 12/09/17 10:06 AM Re: Altitude and Dope [Re: RiverRider]
FiremanJG Online   content
THF Celebrity

Registered: 12/16/08
Posts: 25571
Loc: Wolfe City, TX
Originally Posted By: RiverRider
Title of the thread had me thinking the topic was going to be the 1960s.
geekfreak


Or a story from current day Denver, Colorado .
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#6989739 - 12/09/17 12:05 PM Re: Altitude and Dope [Re: Cattleman]
ChadTRG42 Online   happy
THF Celebrity

Registered: 09/16/09
Posts: 13243
Loc: Lewisville, TX
That's about right. Here's a good JBM site to run the elevation and temp charts:

http://www.jbmballistics.com/cgi-bin/jbmcard-5.1.cgi
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#6989753 - 12/09/17 12:23 PM Re: Altitude and Dope [Re: Cattleman]
Cattleman Offline
Tracker

Registered: 02/09/13
Posts: 884
Loc: Palo Pinto county
Thanks men. I hope I have a story with a nice buck to share in a few days.

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#6996577 - 12/14/17 04:38 PM Re: Altitude and Dope [Re: Cattleman]
Cattleman Offline
Tracker

Registered: 02/09/13
Posts: 884
Loc: Palo Pinto county

Here's my deer. Story in the deer hunting section.

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