You seem oddly fascinated with what somebody else is doing (or did in the 1970s) and oddly fascinated with what they are wearing.
Life is short. Go live it and stop worrying about the little details. You'll never get into a dove field if you're waiting to dress like him and have a dog like him.
Get whatever you need to be legal and then go hunt something. I promise you'll learn along the way.
-Jake