You can have all the calls in the world and be the best caller in the world but if your gun can' t shoot good enough then there is no sense in even going unless you just like to be in the woods to hear them like I do.The whole hunt comes down to when you pull the trigger.So why shoot a shell and choke that is " good enough " instead of getting the best you can get.I must confess though I don' t even have the nitro hevi-shot YET but will by next spring.