2100fps seems a bit slow? Is it a carbine?
Here's what I came up with:
- Reticle - Dead Hold BDC-PA
- subs.jpg (68.21 KiB) Viewed 2291 times
For your load:
- 140gr, 0.65g1, 2100fps
- ballistics.jpg (201.33 KiB) Viewed 2291 times
Remember, the further the target, the harder it is to estimate distance, and the harder it is to precisely "hold-over" so to speak. A small mistake might yield a complete miss. For long shots, where you potentially have more time to calculate, it makes more sense to range, strelok, then "dial-in".
I can use a 22lr BDC fairly well, but that's because it's significantly easier to guesstimate 50m/75m/100m vs say for example 230m/270m/300m (without using a ranging device).