The IAB Sharps are made by Pedretti, not Pedersoli.
They are a notch lower in quality and less predictable. A Google finds a few that are really nice, some that are interesting DIY shop projects, and some that are pretty sad.
A friend has one imported by Sile. It shoots quite well with jacketed bullets but he has not been able to come up with a cast bullet load to do nearly as well. It may be one of the ones that needs to be rechambered to .45-90 to get a good throat.
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