mauser I've seen batchelor groups as late as mid October, but that's usually about as much as they can stand each other. Much past that and you can figure them to be split up.

A friend of mine stopped by to show me some cam pics today. He had it in a location that I used to hunt. 3 years in a row a batchler group of bucks came through on the first day of archery season. The big boy in the back looks sweet!