Thread: Drop chart help

Greetings,
For me it is absolutely essential to have your actual velocity and prepare your drop chart from that, I use the Hornady app for this. 44.5 grains is a mid load and should give around 2,700 fps in a 20 inch barrel based on my own chronographing. Subtract 25 fps per inch below that but to know what you are actually getting chronographing your load in your rifle is the only way to be sure. You may wish to zero a little closer to keep you mid range trajectory down. Your Hornady drop chart will show how much this is. My .308 is zeroed for 172 metres, a handy distance here at home and my standard load chronographs around 2,750 fps. My .223 and 6.5x55 are zeroed at 200 metres. I shot 300 yards (275 metres) recently with the .223 and the drop was close to dead on. You want to have a zero that allows you to take a shot out to your comfort range without faffing about with a range finder. Only you can decide what that is. By all means test your drop chart with actual firing but the drop chart should come first and for that you need the actual velocity.
Regards Grandpamac.

that will give some idea of what pointplank looks like and what I mean about changing zero to suit.