I developed a spreadsheet to help me calculate Rear Sight Deflection to correct windage errors. (I can never remember the formula.) I thought I'd try and add this to the "Life Hacks" thread as a useful tool. But when I tried to upload the file via "attachments", I get an error when I tried to upload it:
Am I missing something? Maybe this filetype is not allowed? No problem if so, just thought I would ask.
I'm using the FireFox webbrowser, on Linux Mint. The spreadsheet was developed with LibreOffice. Here is a PDF of the spreadsheet I'm trying to upload:
Sight_Deflection_Calculator_2020.pdf