I shot a 500+ pound Scimitar Horned Oryx at 184yds through the base of the neck. It was a little 85gr Barnes XBT started out at 2900fps. I was recovering from a neck surgery and had a Mod 700 made into a 6mm/222 Magnum ( 6x47) with a 27 inch barrel. It had a 3x10 Sightron Compact on it. Lone Wolf synthetic stock. Hardly any perceptible recoil, so wife & doctor "approved" ( very important! ha) Anyhow, he dropped down, never kicked! Bullet had exited. I gave him an insurance shot at 75yds. He was on his side, brisket facing me. I shot him up through the heart and it broke/stopped in the spine. It weight 83gr! That's 243 ballistics. I shot an axis buck and doe with same results. Base of the neck is a very good killer, shot many deer/hogs there.