In the profile it ask for sight height. What exactly does that mean? Also What is g1-g7 drag function? Any info is appreciated.
Range Report Ballistic program on phone, Help.
- Thread starter chriso
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Re: Ballistic program on phone, Help.
Sight height is the amount the scope is higher than the bore. That's important to the ballistic calculation because the bullet starts off below the line of sight by that amount.
It's not a critical measurement. Just measure from the center of the bolt to the center of the scope tube using a ruler or tape measure.
The drag function is a model of how the bullet behaves in the air. Each bullet has a ballistic coefficient, or BC, which is used with a particular drag function.
G1 is the drag function which has been around for a long time, and describes flat-based bullets. The G7 drag function better describes modern boat-tailed bullets.
You will need the BC of the bullet you are shooting, and you need to tell the program what kind of BC it is.
Probably more than you ever want to know about that subject is here:
http://exteriorballistics.com/ebexplained/5th/221.cfm
Sight height is the amount the scope is higher than the bore. That's important to the ballistic calculation because the bullet starts off below the line of sight by that amount.
It's not a critical measurement. Just measure from the center of the bolt to the center of the scope tube using a ruler or tape measure.
The drag function is a model of how the bullet behaves in the air. Each bullet has a ballistic coefficient, or BC, which is used with a particular drag function.
G1 is the drag function which has been around for a long time, and describes flat-based bullets. The G7 drag function better describes modern boat-tailed bullets.
You will need the BC of the bullet you are shooting, and you need to tell the program what kind of BC it is.
Probably more than you ever want to know about that subject is here:
http://exteriorballistics.com/ebexplained/5th/221.cfm
Re: Ballistic program on phone, Help.
Cool thanks, figured it had something to do with the BC but it ask for the BC and the drag function so thats what confused me.
Cool thanks, figured it had something to do with the BC but it ask for the BC and the drag function so thats what confused me.
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