I agree with Tom, with the following clarifications: 1. Hunter Arms used barrel tubes, fluid steel and damascus, that had received provisional proof in Belgium. Hunter Arms proof tested their finished barrels in house and the statement “All L.C. Smith guns are guaranteed to shoot any Nitro Powder made” appeared in advertisements as early as 1894. The L.C. Smith listing in the 1908 Sears, Roebuck & Co. Catalogue No. 117 included “Bored For Nitro Powder” (both Armor and Damascus barrels) and the Notice “All our guns are tested with heavy loads and cannot burst except by carelessness, obstruction in the barrel or improper home loaded shells with nitro or dense powder.” The stylized PM and HACo in a square over NP did not appear on the barrel flats however until about 1922. 2. Federal 16g Game Loads are 1 oz. at 1165 fps which is 2 1/2 Dram Eq. 3. Remington Game Loads are 1 oz. at 1200 fps, with more recoil. 4. Using these loads is dependent on having the head of the stock examined for cracks, and repairing with glasbedding if present.