I have called in alot of bucks mature and immature alike to the snort wheeze.........I have also had mature and immature bucks turn tail and run when I have used this call........it really just depends on the mood of the buck. Here is a video clip from last year of a 1 1/2 that I snort wheezed in and a mature 4.5 later in the morning that was chasing a hot doe, he actually snort wheezed as he was chasing her after i grunted at him.

http://www.youtube.com/watch?v=zeQJVe-fzcE

BTW rib me all you want for hitting the tree..............it was below my line of sight and never saw it,had a clear "veiw" to the vitals..............oh well, he's still alive and only getting bigger as the years go by.