when making load charts or useing JBM/ipod do i use GPS ALT or density altitude? does ballistic FTE work out density altitude with from the weather data you put in?
Range Report density altitude & load charts or useing JBM/ipod
- Thread starter Ring
- Start date
Re: density altitude & load charts or useing JBM/ipod
Ballistic FTE can take Density Altitude directly (e.g., if you got it from Kestrel).
But it's (in my opinion) much simpler (and better) to take Pressure Altitude, temperature and humidity (again, everything from Kestrel) and let Ballistic FTE compute Density Altitude (which it does quite nicely).
An alternative is to take GPS altitude, enter it into Kestrel, get SLP-corrected <span style="text-decoration: line-through">altitude</span> <span style="font-style: italic">pressure</span> from Kestrel, and input both (along with temperature and humidity) to Ballistic FTE.
Lastly, the worst is getting GPS altitude, weather data from a weather station (that may be 1 mile or 40 miles away from your shooting spot).
Ballistic FTE can take Density Altitude directly (e.g., if you got it from Kestrel).
But it's (in my opinion) much simpler (and better) to take Pressure Altitude, temperature and humidity (again, everything from Kestrel) and let Ballistic FTE compute Density Altitude (which it does quite nicely).
An alternative is to take GPS altitude, enter it into Kestrel, get SLP-corrected <span style="text-decoration: line-through">altitude</span> <span style="font-style: italic">pressure</span> from Kestrel, and input both (along with temperature and humidity) to Ballistic FTE.
Lastly, the worst is getting GPS altitude, weather data from a weather station (that may be 1 mile or 40 miles away from your shooting spot).
Similar threads
