Recently downloaded the Shooter App on my phone, and have been playing around with it. Don't have a load developed yet, however I inputted a ball park number for velocity to get familiar with the app. One thing I am curious about is the difference from just using the altitude compared to manually entering the barometric pressure. With a .284, 175gr Berger @ 2950fps, the difference from using altitude to the actual pressure is anywhere from 2.5MOA-3MOA difference at 1000 yards. I have never used an app before, always used my fathers equipment, back in the day it was exbal, and than he stared using the BR-2 products. I am guessing that the actual pressure is going to be my best bet?
Shooter App Question
- Thread starter DesertBoy
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lancetkenyon
Well-Known Member
Use actual pressure.
Not sure HOW you are at 6200' AMSL and have 30.25" barometric pressure. I think you have some errant data on that. 29.92" is sea level. 6200' standard pressure should be around 23.80". Which makes a HUGE difference at distance.
Not sure HOW you are at 6200' AMSL and have 30.25" barometric pressure. I think you have some errant data on that. 29.92" is sea level. 6200' standard pressure should be around 23.80". Which makes a HUGE difference at distance.
So I have the option to use Altitude or "Pressure is absolute." I live in Phoenix, so I wanted to compare to a higher altitude situation. The town Show Low in AZ is about 6300ft. I looked at the barometric pressure according to the weather station up there, it show 30.25, and than compared it to the altitude on the app. Altitude gives me a solution at 22.5 MOA, and if I enter the pressure it gives me 24.9 MOA
I see what you are saying now. When I slide it over to use "Pressure is absolute" it changed to input station pressure not barometric pressure. Thanks for the help
danj
Well-Known Member
Last edited:
Doom2
Well-Known Member
The confusion is barometric pressure vs station pressure. Barometric is normally corrected to sea level. Station pressure is the actual pressure at the location. I am not familiar with Shooter but it needs station pressure for the calculations. It can get it from barometric pressure and altitude or from just station pressure.
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to enter altitude and baro. pressure or just station pressure. I didn't realize when I "slid" on the app to use absolute pressure, that it changed from barometric pressure to station pressure. So essentially I was trying using the barometric pressure where station pressure should have been entered. Thus throwing my elevation solution about 3 MOA off.
