Range Report drag coefficient ?

[tate1976]

on my trasol app it has a spot to change the drag coefficient .. how do i figure out what mine is. I have the g7 inputted as.357. Trying to use all the info to best out of the app. im shooting the berger 6.5mm 153.3 bullet. any help would be great thanks

 

[Brettmparker1]

Just move it up or down until the solution lines up with what you have on your scope. Just my experience I’ve had better luck changing the middle number on the bc. but that’s at 800-1000 yards inside of that I change the muzzle velocity. But all work well. This is just my experience with the app

 

[tate1976]

I got it figured out. Looks like Berger’s site calls it form factor. I plugged there number in and my dope lined up a lot better. Have to wait until the next range trip to confirm