Question on ballistic app data inputs

[terrywick4]

+1 to LR1955. I use 22 fps per inch and usually it is close to the labradar.

Boyette:

I think you are confusing elevation changes with barrel length.

I believe that barrel length is something like 25 or 30 fps per inch and isn't linear.

It is generally considered that a 50 - 60 fps difference in velocity equate to one minute of elevation.

LR55