I was given a Lee 12 ga loader that is new along with 150 pounds of shot, What wads do I buy for hunting loads? Also I will be loading for 16 and 20 ga in the future, Is there much difference loading them? I have been told I can use low brass spent casings for loading hunting loads, Is that true? What would be a good load book to buy? What would be a good powder for the 3 ga listed above for hunting loads? Sorry for all the questions but I really appreciate any help.