Just curious, why a semi-auto, rather than a bolt action?
Only benefit I ever realized by calling coyotes with a semi-auto was that the reload was instant and quiet (when everything functioned right), meaning the 2nd or 3rd coyote didn't hear a shot AND
a reload afterwards. Downside was reliable reloading when it's sub zero and loss of accuracy for the ones that hang out there beyond 300 or 400 yds.
So far as shooting the runners.....coyotes seem to have as many gears and tricks as we have bullets, and I don't recall ever attributing a running hit to having a semi-auto..........Your mileage may vary.?
Other question, is the BDC reticle calibrated for 223 ammo and 50 grn projectiles? I am not familiar with it. Looked through one once is all.
If it's not designed for your cartridge, it may give you more headaches than it's worth when the dogs are beyond 300 yds, unless you realize that and sight it in for one of the further circles at the further distance.........it will hopefully still be close enough for the close shots if you do it that way.
Best of luck, and FWIW; I find it quite easy to put coyote hunting before the girl
The ex-wife used to say "if she was a coyote maybe I'd pay more attention to her"