CNF - the "3" with a little square is a proof mark from the sleeving work (sleeved barrels must be reproofed in the UK). It indicates that the barrels were proofed for "3 tons per square inch" of pressure. If the gun is near 1895 originally, then this is reproof as this mark was not in use at that time. 3 ton proof is most usually associated with 2 1/2" chambers and is standard/common for game weight guns. Take the gun out in sunlight and look at both sides of the sleeving joint on the barrels under a magnifier. If the original barrels were damascus, you will most likely be able to see something of the pattern under the blue. Sleeving damascus is an OK way to return a gun with clapped out barrels to shootable, whether the original barrels were steel or damascus. The newer Teague system of lining is better as it preserves the original damascus exterior. The issue between the two is that the Teague system is more expensive and there are many guns that are marginal for this kind of expenditure; many are marginal for sleeving, too.
Last edited by Rocketman; 09/10/07 09:04 AM.
