First off I have no chronograph nor does anyone I know. I am shooting a 308, 24" barrel, 175 berger VLD, 1:12 twist, 43.6gn vargret. I am using the balistic arc app and using known distance targets and my moa the calculator says it's going 2695. That seems fast but it is right on for several distances I have shot at: 260, 545, and 650. I used my local weather and my correct sight hight. Thanks. BTW I do plan on a chronological for christmas.