Thread: Need help making drop chart match up

tripple check your 100y zero, it is your baseline. ideally fire 2x 5 round zero groups.

you should be using a G7 BC, not G1 for a boattail bullet. even better use the AB custom curve if they have it for your bullet.

Never adjust your muzzle velocity as its been reliably measured, you can slightly adjust the AB provided BC but if you're changing it by more than 0.01 something is wrong.