Feldballistik: Hunt Ballistics

Hunting ballistic calculator: correction in clicks, weather and GPS automatic, over 900 loads, shot log, works without reception.

Feldballistik is a lean ballistic calculator for hunting, made for the quick, safe shot in the field, not for gimmicks.

On launch the app automatically fetches:
• your GPS position and altitude above sea level
• the current weather for your location (pressure, temperature, humidity, wind) from Open-Meteo
• the shooting direction from the compass

You enter only two things: distance and slope angle. The app immediately shows you:
• ELEVATION, how many clicks up or down
• WINDAGE, how many clicks left or right (wind and spin drift combined)
• plus time of flight, remaining velocity, impact energy and Mach

Calculation core:
• G1 or G7 drag model (McCoy/JBM), selectable per profile
• humid air density, latitude- and altitude-dependent gravity
• slope angle by the improved Rifleman's Rule
• Miller stability and Litz spin drift for the lateral offset
• Coriolis and Eötvös effect on by default, can be switched off in Advanced mode
The core is checked against the published Sierra and Sax tables; the remaining velocity agrees to within a few metres per second. This checks the calculation core, not the agreement with your rifle.

Profiles and catalogue:
• wizard for your first profile: rifle, load, scope, zeroing; any number of profiles
• searchable catalogue: over 900 loads and bullets with the manufacturers' own figures (Norma, Hornady, Sellier & Bellot, RWS, Geco, Blaser, Barnes, Sako, ATS, Lutz Möller, the complete Hasler range) and over 160 rifles with twist rate (Blaser R93/R8/K95, Merkel, Sauer, Tikka T3/T3x, Sako 85/90/100/S20, Schmidt-Rubin K31, standard twist per calibre)
• every preset names its source; the values are starting points
• zeroing with the terrain angle of the range, because few ranges are level
• for best accuracy: fire one check shot at distance and true BC or V0 in the profile

Advanced mode (Settings):
• enter wind, station pressure, temperature and humidity from your Kestrel by hand
• truing: enter a check shot from 200 m, the app calculates BC or V0
• fine corrections switchable one by one, correction also in mrad and MOA, DOPE table up to 1000 m

Backup and catalogue updates (optional):
• backup of your profiles to a folder of your choice, e.g. in iCloud Drive, without an account; after a reinstall the app can restore the backup
• daily comparison with the online catalogue (can be switched off): new loads and rifles without an app update
• report missing ammunition or rifles directly from the app

Frugal with data: no account, no ads, no tracking. All profiles and settings stay on the device. The catalogue comparison sends only the app version and a one-time signature, no profiles and no location, and can be switched off. Without reception the app keeps calculating with the last loaded or manually entered values.

Also in the app: metric or imperial units (yards, fps, inches, mph), a searchable