Indiana has a new expungement law that may be helpful to you in getting your civil rights, including your 2nd Amendment rights to carry a firearm, restored. You should contact an experienced criminal attorney for a consultation to see if you qualify.
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There are attorneys who tend to specialize in these kinds of issues. You may be able to find a few on avvo. Try the "Find a Lawyer" section on here and search the entire state of IN. I'll try to find a practice area that may be more suited to your issue so some more attorneys may see it. Bet of luck.
I suggest you contact attorney Hand directly. His answer here on Avvo indicates he is clearly familiar with the law, including any recent developments that might be to your advantage. Give him a call.