According to Federal law, a misdemeanor crime of domestic violence is one that:
"is a misdemeanor under Federal, State, or Tribal law; and
has, as an element, the use or attempted use of physical force, or the threatened use of a deadly weapon, committed by a current or former spouse, parent, or guardian of the victim, by a person with whom the victim shares a child in common, by a person who is cohabiting with or has cohabited with the victim as a spouse, parent, or guardian, or by a person similarly situated to a spouse, parent, or guardian of the victim.
If the facts of your old case do not correspond to the Federal definition, then you have not lost your state or Federal gun rights. Otherwise, because of the Violence against Women Act and the Lautenberg Amendment, the loss of your Federal rights is for life, and until the law changes you would not be able to have anything to do with a gun.