There's something amiss here. Roy's gun shows both Paris proofhouse marks and the PM mark. The Paris proofhouse did not exist prior to 1897, and proof with semismokeless powder M (PM) also began in the late 1890's. I'm thinking that Bernard barrels were still being made into the early 20th century, although I'm not positive. If they stopped production in 1890, then the only possibility would be a later reproof.