unhide Ballistics Table 0 and find cell A23.

Quote from: meccastreisand on October 02, 2014, 05:10:03 PM
There are 30 or so hidden tabs that have all the calculations. Find Ballistics Table 0

Thanks a lot for your help. I did what you say but still I cannot find where the Cd are derived from velocities readings. Somewhere else to look at?

There are 30 or so hidden tabs that have all the calculations. Find Ballistics Table 0

Quote from: meccastreisand on September 24, 2014, 11:49:10 PM

When you click on the excel file at the download share it'll show you an image of the spreadsheet. At the top will be an open link and an arrow pointing downward that will download it for you.

Thanks, I finally got it downloaded, but I've revised it and haven't found where Cd is calculated. Please could you tell what tab is or where I should look in?

Quote from: 375CT on September 23, 2014, 08:37:13 AM

Quote from: meccastreisand on September 22, 2014, 10:23:23 PM
I think I have basically what you're looking for buried in some hidden tabs on my Ballistic_XLR workbook.

you can download it at Ballisticxlr.com. If you need detailed info on it you can get in touch with me there too.

For some reason I cannot download your workbook. Google raised an error message, so please can you check?

So, you say that from downrange velocities, you can calculate Cd (for any G function) ? Am I right?

Thanks in advance for any help!

When you click on the excel file at the download share it'll show you an image of the spreadsheet. At the top will be an open link and an arrow pointing downward that will download it for you.

Quote from: admin on September 23, 2014, 01:21:22 PM
I think I have missed this request.

On my downloads page you can download a workbook, here a screen copy.
http://www.bfxyz.nl/pics/bcfromvelocitysimplelarge.PNG
It uses velocity measurements at several distances, yet one can apply the same method to a single measurement.
Yet the more measurements (at the same or different disatances) the better the results/

Alternatively you might post your data and I reply with an excel document that does the job.

Robert, thanks for the graph. I don't have any measurements yet, but if you can tell me how to do the spreadsheet I can try. Any help, much apprecitated for sure!

I think I have missed this request.

On my downloads page you can download a workbook, here a screen copy.
http://www.bfxyz.nl/pics/bcfromvelocitysimplelarge.PNG
It uses velocity measurements at several distances, yet one can apply the same method to a single measurement.
Yet the more measurements (at the same or different disatances) the better the results/

Alternatively you might post your data and I reply with an excel document that does the job.

Quote from: meccastreisand on September 22, 2014, 10:23:23 PM
I think I have basically what you're looking for buried in some hidden tabs on my Ballistic_XLR workbook.

you can download it at Ballisticxlr.com. If you need detailed info on it you can get in touch with me there too.

For some reason I cannot download your workbook. Google raised an error message, so please can you check?

So, you say that from downrange velocities, you can calculate Cd (for any G function) ? Am I right?

Thanks in advance for any help!

For my purposes as a recreational shooter altitude matters only insofar as I may climb or descend while out in my area of operations. It might be hunting or just poking at steel but altitude still has to be accounted for in my shooting solutions occasionally.

My own Excel spreadsheet (ballisticxlr) has extra data on it that's meant to deal with variations of air temp, air pressure, ammo temp, etc... for that reason.

I think I have basically what you're looking for buried in some hidden tabs on my Ballistic_XLR workbook.

you can download it at Ballisticxlr.com. If you need detailed info on it you can get in touch with me there too.