ELR Bullet drop computer

It may be helpful to let folks know your budget. The software and hardware recommendations can range from $10 to $2000.

I use Field Firing Solutions on a Pharos 565. The program is excellent for ELR, and the Pharos is affordable, yet has bluetooth and an accurate GPS.
 
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They are both better, far more robust.

I have been running the AB Kestrel alongside Coldbore using a Windows Phone. (CB syncs to a desktop, PDA, and Phone ) and while the Elevation for both are very good, I find the wind calls not matching up as well with the AB Kestrel. Something in its wind calculations are lacking. Both CB & FFS have been used by many ( including me) to distances beyond 2000m with stellar results.

In my opinion, Pesja based solutions beat Point Mass every time.