I carry my rattling horns with me from the second week of sept after the bucks are out of velvet they start sparing and testing each other to see what head gear each has and to form there pecking order. I don't do any agressive rattling until mid oct but will tinkle the horns together. I have also used grunt calls and "the can" to call several bucks in. Bucks do go into lock down and there seems to be a time when deer movment does slow some but if you don't try you'll never know.