I'm not a legal expert, but I have researched this subject a little because a felon friend of mine once asked me to go to the range with him and shoot a couple of my guns. It didn't take long to find out that wasn't such a hot idea.
I did learn a few things though: at the Federal level, you will never be allowed to legally own or carry a firearm again, ever. In some states (SC being one of them from my brief research today) a felon can apply to have his record sealed or expunged. This may make the felon eligible to own a gun in that state. Unfortunately, it won't help because when ATF runs your 4473 they'll see your felony and deny the application. There actually is a process to get ATF to approve a pardon, but apparently the process hasn't been funded since the early 1990's so they don't do it anymore.
However there's another area you may want to look in to. I ran this question past a police officer with 25 years service in the city where I work. I'm only quoting the officer now, but he said that here in Texas everyone, including a felon, has a right to self defense in their own home. To have guns in their home. The stickler is that the felon cannot be the owner of the firearm and cannot be allowed to access a firearm on his own. In my friends' case, his wife could purchase a gun and have it in the home. The officer doubted that in a self defense situation any prosecutor or judge here in Texas would take the case. There is still a risk that you could run afoul of the Feds in this situation, but the officer was also skeptical that the Feds would pursue such a case. I would hope SC would allow a similar situation, but you have to look into it and perhaps hire a lawyer to help.
Also, how long were you imprisoned? Under the National Firearms Act of 1934, felons only lose their gun rights if they are imprisoned for more than a year. And on the off chance your felony was a non-violent one, a 1965 amendment to the Act did exempt certain felons who committed non-violent felonies from losing their gun rights.
Again I'm no legal expert, but I hope this may help you in some way. Maybe together you, your wife and a good attorney can find a way to make it work.
Best of luck to you!!