We used to bead blast before re-bluing...we never did suncorite them. We didn't leave them in the white though. I can't imagine beading the inside though. The beads don't carry the power to do that, I've found. Just putting the gun up against the muzzle or chamber won't do it. It needs to be within a couple inches. It should be ok as a shooter, or for finishing the re-finish job.