Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
Watch Out for Scammers!
We've now added a color code for all accounts. Orange accounts are new members, Blue are full members, and Green are Supporters. If you get a message about a sale from an orange account, make sure you pay attention before sending any money!
JBM Ballistics has a calculator that prints a chart for several density altitudes. It's been quite a while since I've used it, but there is some information on it here:
.2 mils shift past 600 for every 1000' DA so going from see level to 3000 is pretty big. In the winter we go negative DA. So for an 860 yard target it gets pretty darn significant from winter from -3000 to summer at 3000.
.2 mils shift past 600 for every 1000' DA so going from see level to 3000 is pretty big. In the winter we go negative DA. So for an 860 yard target it gets pretty darn significant from winter from -3000 to summer at 3000.
You need to isolate the things that make the difference. Once you do it all becomes a bit clearer. The issue with focusing on DA is that the mixed variables that make the same DA can confuse the shooter.
Simplifying heat from station can be the biggest win in understanding what needs our focus.