Is there a way to calculate without a chrono? Say you zero at 25yards or so. Can it help with that or do you need to do a whole lotta stuff to input?
Thx.
Thx.
For those of you who use an app
- Thread starter Haganaga
- Start date
Calculate what? Holdover values?
For holdover:
You need to know your FPS, sight height (scope to barrel), ballistic coefficient of pellet used, pellet weight, just to start in order to get a range chart/holdover chart.
If you don't have a chrono, you can do it manually. Get a rangefinder or some way to measure distance correctly, then set your target up at 10, 20, 30, 40, 50 yards, shoot a 3-shot group at each distance from the same location, and measure the pellet drop and see where that matches your scope hash-marks to figure out holdover values. It's a bit more cumbersome, but it works well.
Hope this is what you're asking about, because I'm guessing.
For holdover:
You need to know your FPS, sight height (scope to barrel), ballistic coefficient of pellet used, pellet weight, just to start in order to get a range chart/holdover chart.
If you don't have a chrono, you can do it manually. Get a rangefinder or some way to measure distance correctly, then set your target up at 10, 20, 30, 40, 50 yards, shoot a 3-shot group at each distance from the same location, and measure the pellet drop and see where that matches your scope hash-marks to figure out holdover values. It's a bit more cumbersome, but it works well.
Hope this is what you're asking about, because I'm guessing.
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I'm not certain but I think the Chrono Connect Mobile app calculates fps by sound, that means you should be shooting at something made of metal like a plate or metal spinners or something along those lines that makes noise when hit especially at longer distances. There is a free "lite" version of the app out there, might be worth a shot.(pun intended)
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