Is there a phone-app or other expedient method that will assist the shooter in measuring and quantifying the angle from gun-to-target that folks use?
[Answered - it's already built in to Strelok - Slope Angle, Degree;s - launches your camera with a crosshair - aim at target, that's your slope angle. Probably in other apps as well; other route is a separate phone app, such as AngleCam - which I'm now uninstalling, since it's built into Strelok anyway.]
I ask because I sometimes shoot at some neat gong-ranges at distance, and the ballistic calucators are never quite right. I'm beginning to suspect the flight behavior alteration from shooting at an angle down into the target valley, may be a factor. Most calculators have the abilty to enter that even, but what value does one enter? I'm wondering if there's maybe something as simple as a phone app that uses your camer at max zoom you point at the target, and then it tells you what angle you are holding your phone, to be doing so?
I guess I can get a long straw and two strings, and use triginomitry on my abacus to calcuate the angle - but was hoping there was an easy-button on this?