Guns of the highest grade would be where you would find "Krupp Special" steel barrels. I can think of only one, a Lefever Crossbolt in Optimus grade. Their 1901 or 1902 catalog offered this steel on the Optimus. Krupp Special Steel was a large step up from Krupp Steel.

Last edited by Daryl Hallquist; 01/24/21 10:22 AM.