I would definitely support an orginization like that!
As far as lobbying, for law change you must go where the money is. I've been working as an engineer in the oilfield for the last six years and have met many politician at local petroleum clubs, many of them local, some of them state wide, but also many people with friends in high places, and lots of money. For the most part, alot if not all of these people are strong 2nd amendment people. Just a thought.
. Good luck and let me know how it goes.