Originally Posted by Hondo64d
I don’t even chrono ammo anymore. I do my load development at 500 yards, shooting a series of charges in .4gr increments. Usually I’ll get two or more consecutive charges that have same POI and small vertical grouping. I pick the middle charge weight and load development is done. Based on charge weight and published data, I make an educated guess at velocity and get a good zero at 100 yards. Then I go to 800 and use the velocity truing function in my software. I use BCs derived by Bryan Litz if I can get them and published BCs if Litz hasn’t put anything out there. I have never not had DOPE not line up using this method.

I prefer DA. Just one number to mess with instead of three. Don’t even need to use temp unless you want to know when you’re going transonic.

John

Interesting technique. I may try that. I'm sure I'm just having a brain fart; but, what's "DA"?

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