You could use closer ranges like 400 yards but you would really want to test the drops out to at least the distance you want your turrets made up to. Best would be at each 100 yds of distance out to your maximum.
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Yes the Hornady numbers are from a 24in test barrel. You値l lose approx 150fps with the 18in barrel and gain about 20fps with a suppressor (assuming you池e using one) so velocity will be around 2470fps. Just a rough guesstimate to be fair, as others have said you値l need to validate with a chrony and actual drops. I知 using the same ammo out of a 19in barrel and I知 hoping for 2500fps
Sorry for late reply. No they're factory superformance, with that speed it should have a 1000ft-lbs of energy out to 700 yards. I shot my first deer the other week at around 120-150 yards and seemed to perform nicely, dropped on the spot with a good exit wound, less explosive than sst.