I use the applied ballistics custom curve and it matches the Hornady 4Dof app at 600m and only varies by .25moa at 1000m.
I’ve validated the AP data at distance and it’s always bang on.
I’m assuming the model used in Hornady app (the BC calculator) is close to their listed BC?
For a free app I highly recommend the 4Dof for use when comparing different loads and projectiles. It convinced me to chop 3” off my barrel by plugging in data and seeing I would only lose 1/4moa in wind at 600m.
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