I shot a doe last week at 30 ydsand hit her in the shoulder and it sunk all the way up to the fletchings and stuck out the otehr side pretty far then got pulled out after about 20 yds, But she only went about 50 yds and was done.
But you should have hit at least one lung and maybe even the heart. So just look and dont guve up. I think you will find him.

Also maybe you should up you weight broad head and maybe even sharpen them if the weight wasnt the problem. Cuz you should have got more penatration then that ( i think) like you could have hit that bone but i think 60 pull should get ya more then 4 inches, Like i shoot 60 and it went right threw that does shoulders.
Good luck and keep all of us posted.