The biggest concern for tree companies even the good ones is forest fires. Letting people shoot on their land risk the chance of a forest fire which can cost millions of dollars and risk the lives of those fighting it . Thats the main reason for not allowing shooting. Hunting is done in Oct and November which is the rain season for most of oregon and even then they are told no target practicing . Sure a responsible shooter would not shoot during the dry season but a responsible shooter would also follow the rules of the land.