Are the Pedersoli locks any good?
In general, Pedersoli quality is excellent, and this includes their locks.
But, like any generalization, there are exceptions.
Pedersoli is very faithful to the original design of the products they are replicating. In at least one case, that resulted in a lock that faithfully duplicated the faults of the original: the Harper's Ferry pistol. Fortunately, they saw the light and corrected the problem after a while, and later production models lived up to Pedersoli's reputation for quality.
Bottom line: current production locks are high quality. Be careful buying used, however.