Yep they are starting to spar heavily and in some states already fighting. So a challenge grunt this time of year would be an excellent choice. If you were to do some rattling, try to simulate a good heavy sparring through this week and start using a more "fight base" rattle next week or so. The big mature bucks DO know the difference amazingly. And they do get call/rattle educated rather quickly. They didn't get mature by being retarded
