IF memory serves me Champlin (importer) stated bores .731, to the untrained eye it appears bores were honed and polished (removing pitting?). I've spoken with James Flynn about the stock bending since he's only 1 1/2 hours drive away, I'll ask him what he thinks.
I believe I read something once about English gunmakers boring long tapers with little constriction and coining the term "improved cylinder" to describe it, as opposed to "choke" boring. Could that explain the RB configuration and lack of marking?
