Two yrs. ago, around ten a.m. I heard the loudest buck grunt I' ve ever heard. It was so loud that it actually sounded like a phoney call or something. It had a hollow sound like that of a large grunt tube fully extended. Thinking that it was another hunter over-eagerly blowing his/her call, I stared in that direction and continued to hear it. Then he emerged. It was the largest buck I' d ever seen in my bowhunting career!!! And he was in full rut and 50 yds away!!! Anyway, he never came close enough for a clear shot, but I was amazed how his grunt bellowed out through the woods. It was awesome.