Why don't you ask the agency that denied you the right to have it?
No one can really give you an honest answer except them.
There should also be an appeals process. Ask about that.Answer 2
being convicted of a drug charge...(minor according to your story but it)...will DQ you from purchasing a handgun...I am not sure of the "wait" period when you become eligable again..I would say seek out your state rep or district rep and get some clarification on it...or just move to TX and buy all the guns you want...but you would still have the same drug charge on your criminal history...so good luckAnswer 3
This is exactly the reason why you were denied the permit to purchase. Answer 4
Go to court and fight it.Answer 5
Look for private sellers. No red tape.