Thread: Drop chart help

Hi all,

Looking for a bit of info for creating a drop chart for my short 308 with reloads.
Iv done a simple ladder test to find a decent consistent load. Shooting 150gn interlocks with 44.5grains 2206H. Currently have a 100m zero but upon doing some research I’m thinking a 200m would be best for apparently being able to point and shoot out to 250m ish potentially.
At this stage around 320m would be my furtherest shot id need to take and also be comfortable with.

Is it best I borrow a chronograph to workout muzzle velocity etc then use the Hornady app for example to figure out the drops?
Or forget the chrono, access a 200m range to zero rifle then do some shooting at different distances to gauge where the projectile is landing?

Being in Auckland the closes 300m range is the NZDa one in Tauranga.

Thanks for and info and help.
James