Both of these comments are incorrect to some extent. A convicted felon in Louisiana can possess a firearm if the felony is not listed in the statute regarding felon in possession of a firearm. (See statute below) It is not necessary to get a pardon. If you are on probation or parole, regardless of the felony, it would violate the probation or parole, but it is not a new crime. This is not just since the amendment was passed. It has been like that for several years. (At least since 1998 because I have that criminal code in front of me right now).
Also, if anyone is interested, if you look at paragraph D of the statute, an air rifle would never be prohibited under the statue because it does not fire the projectile with an explosive, but through compressed air.
And for the record, I am a Lousiana attorney and 99% of my practice is criminal defense.