Making Range Cards

[EmanP]

When you make hard copies of your dope, do you make one for every 1000' of DA? Seems like you'd need to make a lot of range cards.

Does someone have an easy program to use instead of doing it the long way?

 

[EmanP]

Has nobody made hard copies of your dope?

 

[C_Horner]

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:

http://www.arcanamavens.com/LBSFiles/Shooting/Downloads/DA/

 

[Diver160651]

Look at realistically, you’ll see patterns. 30 degree swing isn’t a big deal if your card is in the middle.

Same for alt..

 

[EmanP]

.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.

 

[Deleted member 113831]

.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.

I would bet your station pressure doesn't change much. It is not as big a difference as the DA numbers would lead you to believe.

 

[Diver160651]

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.

 

[Lowlight]

for DA Cards, I use the FDAC or in Coldbore you can make some nice ones,