Sounds like an interesting pistol/round.
I would suggest you do two things. Contact the performance center to see about cost of a re-barrel and also post it for sale in a few places like Gun Broker and see if it generates any interest. You'll at least be able to see what the market will bear.
If it has any sentimental value, I would keep it no matter whether you re-barrel or keep it as stock. One other question would be, can you get supplies to reload that round? That might bring another option into the mix.
Good Luck and Welcome to the Forum