Thanks so much for your input. I have discovered that not only do the rules vary by each airline but even within the same airline.
I have called Deltas 800 number and asked questions, Called the local airport, and even went out in person to speak with them. Each time I got a different answer.
One said I could put my bow and my rifle in the same case as long as it has 2 locks, I was told I could carry a box of ammo as long as it was in its original case (box) as purchased, I was even told I could put clothing and other items in the case as well.
Its confusing and I guess I will find out when i show up.