I was out with Zach O yesterday shooting Eley Target out to 300. We found my dope as generated by Ballistic AE to be off by quite a bit.

We recorded the corrections and I ran the numbers again.

The advertised BC is .15.

I had to use a BC of .25 to match the field data.

Before you ask, velocity was measured with two chronos, a Shooting Chrony and a Magnetospeed with good agreement.

Anyone else having to true their BC's?