For your honesty I did some calculations about 6.5mm Grendel using avaiable sources online - ballistic tables.
Some maths regarding what you can observe in optics:
- drop at 300 yards: 5.10 MOA compared to 100 yards zero
- drop at 200 yards: 2.01 MOA compared to 100 yards zero
Representation in angle:
5.10 MOA is 0.085 degree - that's the difference between 100 and 300 yards.
2.01 MOA is 0.0335 degree - that's the difference between 100 and 200 yards.
Vertical Field of View of ARCO optics: 6.507 degrees
Let's say our screen resolution is 1680x1050. 1050 * (0.085/6.507) = ~ 14 px
Now please do following:
Place yourself as NATO marksman (with optics).
Fire 25 rounds out of your 30 round mag while in ARCO optics.
Then, use pause menu console and type setAccTime 0.1, execute.
Fire tracers.
What you observe is tracer flying 10+ pixels above center of reticle, at least on my screen it does so. Proven that, your claim about non-working ballistics isn't valid.
Best regards :)