peetzakilla, that is a complicated question.
If federal, yes.
In other words, the guy who murdered his girlfriend with a pistol in the National Forest is in the same boat as the guy who grew the marijuana in the National Forest, both committed federal felonies, neither may ever have a firearm again.
The only hope for a federal felon is a presidential pardon.
State laws vary widely.
In Georgia, they have a first time offenders waiver.
If you have one felony, do your probation, and stay out of trouble, they will clear your record, and you may have firearms again.
Some states are more strict. In New Jersey, a bb gun is considered a firearm, and may not be possessed by a felon.
You think I'm making that up, but it is true.