Don't get too alarmed if you go through the Border Patrol check point.When I was going back home with one in my ice chests,the dog at the check point was getting really excited by the smell of the meat.He was jumping up and down beside my truck.The agent ask what I had in the ice chests and I told him a nilgai.He said I think my dog likes your nilgai.They do have thick hide,even the membrane around the muscles can be thick,so a good bullet and good shot placement is the key.I killed mine with a 300 Win Mag and a 165gr Interbond with no problem.Some ranches require a 300 Win Mag or greater so check before you go.

~Molɔ̀ːn Labé Skýla~
As Bob Hagel would say"You should not use a rifle that will kill an animal when everything goes right; you should use one that will do the job when everything goes wrong."Good words of wisdom...............