First time out I used a .264, 3 well placed shots in the shoulder and finally the ram slowed down.
Second time out .300 short mag did the trick one shot.
You need a good penetrating bullet and able to shoot 450yds with alot of energy, these aoudad are tough SOB's
I thought the same about the site but took the risk and it was well worth it. Nothing super fancy just a good ol hunt.