I selected other because i didnt see sling as an option. Prone was listed but i figured that was related to Reesebottom f-class prone.Prone usually means sling and F-class being the other discipline— which is broken down into 2 classes,F-TR and F open.
Mr. Gary, thanks for the explanation. I learn something new about this shooting everyday. Hope all is well with you and Happy Thanksgiving to you. Thanks for contributing on the forums and please keep it up. WWE