Matabele;
You got some great advise from Huvius and Kuduae.
Work up some loads, try different bullets and see how
accurate you can make it while leaving it alone. It can
only be original once. I'd be happy if it only shot into
4-5" at 100m. Just allow for that. You can always change
out the barrel on down the road if you feel the need.
Good luck whichever way you go.
Raff