http://codes.ohio.gov/orc/2923.14
A) Any person who is prohibited from acquiring, having, carrying, or using firearms may apply to the court of common pleas in the county in which the person resides for relief from such prohibition.
(B) The application shall recite the following:
(1) All indictments, convictions, or adjudications upon which the applicant's disability is based, the sentence imposed and served, and any release granted under a community control sanction, post-release control sanction, or parole, any partial or conditional pardon granted, or other disposition of each case, or, if the disability is based upon a factor other than an indictment, a conviction, or an adjudication, the factor upon which the disability is based and all details related to that factor;
(2) Facts showing the applicant to be a fit subject for relief under this section.
It goes on & on but I doubt any judge is going to grant releif from disability with the current anti-gun crowd making noise.
This on the Ohio level only of course.