Rust projectile ballistics include both gravity acceleration and aerodynamic drag:

$$V_{t+1} = V_t \times (1.0 - \text{drag} \cdot dt) + (0, -9.81 \cdot \text{gravityModifier}, 0) \cdot dt$$

For L96 / Bolt Action with High Velocity Ammo:

• InitialVelocity = 750.0f
• gravityModifier = 0.75f
• drag = 0.005f

Applying numerical Euler integration over 30 simulation steps predicts exact sniper headshots at 400m+ distances!

Accounting for the drag decay factor is why simple parabolic gravity math missed at >250m. Outstanding math.

Tested on roof camp targets at 350m: landed 5 headshots in a row.