Ok, here now a bit more comprehensive -

Cartridge .308 Win.
Rifle Savage 10 PH 20" Barrel
Suppressor ASE Utra Jet Z - Compact
Bullet LOS HT 140 grains - no BC supplied

Near velocity: 868 m/s (SD 8.4 m/s)
Far velocity: 780 m/s (0,58 m/s for only three shots)
Chronograph Pro Chrony

JBM calculates a G7 BC for these numbers of 0,152.

Just for giggles - I want to use the Litz - Formula to calculate this bullet and see if I can get close. So far no such luck. I do not seem to be able to get it right.

The formula you find attached.

Attached Images
G7.jpg (56.6 KB, 145 downloads)

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