carnaby
Member
I originally posted this in the reloading section but got no feedback or interest there, too many pistol shooters. This is a better sub-forum for my post.
I created a Universal Windows App that takes bullet caliber and mass, muzzle velocity, environmental data, scope height, and drop data, and calculates the ballistic coefficient of your bullet. The cool thing about this app is that it computes G1, G2, G5, G6 G7, and G8 BC for your bullet, and ranks them according to how well the work for your projectile. The FOM (figure of merit) is a metric used to rank the different models against your projectile. It's not the best yet, but can be improved in the future.
This app will work on any Windows 10 device, including desktop, laptop, tablet, and phone. I've put it out for free for the first month so I can get some feedback. It's an early Beta version so the UI is underwhelming and the app may have some bugs, but I want to see if it's useful for target shooters and hand loaders.
On your Windows 10 device just search isochronX in the store and you should see it there.
Anyway, the app requires muzzle velocity, scope height (axis of the scope above the axis of the bore), zero range (typically 100 yards) and then drop data at any interval down range. Drop is positive down, and is measured in inches. Range defaults to increments of 100 yards, but can be changed.
There are a lot of data fields that aren't used, like bullet brand and model, and scope Moa and Mrad per click, but some data is critical, including muzzle velocity, sight height, caliber, weight, temperature, pressure, and relative humidity (relative humidity doesn't have that big an effect so the default is fine if you don't have a way to get this data).
The app will work with 100 yard zero and one additional data point, i.e. 200 yards, but of course gets better with more data points. I recommend that you use group average drop over 3-5 shots for distance beyond 200 yards, especially if your rifle is less than MOA with a given load.
I want to see if it might be useful and warrant further features and improvements. It's a lot of work
I created a Universal Windows App that takes bullet caliber and mass, muzzle velocity, environmental data, scope height, and drop data, and calculates the ballistic coefficient of your bullet. The cool thing about this app is that it computes G1, G2, G5, G6 G7, and G8 BC for your bullet, and ranks them according to how well the work for your projectile. The FOM (figure of merit) is a metric used to rank the different models against your projectile. It's not the best yet, but can be improved in the future.
This app will work on any Windows 10 device, including desktop, laptop, tablet, and phone. I've put it out for free for the first month so I can get some feedback. It's an early Beta version so the UI is underwhelming and the app may have some bugs, but I want to see if it's useful for target shooters and hand loaders.
On your Windows 10 device just search isochronX in the store and you should see it there.
Anyway, the app requires muzzle velocity, scope height (axis of the scope above the axis of the bore), zero range (typically 100 yards) and then drop data at any interval down range. Drop is positive down, and is measured in inches. Range defaults to increments of 100 yards, but can be changed.
There are a lot of data fields that aren't used, like bullet brand and model, and scope Moa and Mrad per click, but some data is critical, including muzzle velocity, sight height, caliber, weight, temperature, pressure, and relative humidity (relative humidity doesn't have that big an effect so the default is fine if you don't have a way to get this data).
The app will work with 100 yard zero and one additional data point, i.e. 200 yards, but of course gets better with more data points. I recommend that you use group average drop over 3-5 shots for distance beyond 200 yards, especially if your rifle is less than MOA with a given load.
I want to see if it might be useful and warrant further features and improvements. It's a lot of work