Geno:
As far as I can tell, equating "Crown" over "G" with rifled is an old wives' tale. Crown over S notes proof with schrot/shot while Crown over G notes proof with a geschoss or solid projectile. For several proof steps, the Austrians used a solid projectile for both smooth bore & rifled tubes. Typically a solid projectile is associated with rifling but not always.
"In barrels designed to fire a single projectile-that is, rifled barrels-a soft lead cylinder is used as a projectile."
Wirnsberger page 39.
Kind Regards,
Raimey
rse
