How long are the tubes and have they been possibly cut? A first class 10 bore would have been bored up from a 11 bore pushed plug gauge set of tubes. During this time, or just before, the rule of thumb for a gun with respect to a set of waterfowling tubes would be approx. 1/2 lb added to the baseline of 8 lbs for every additional inch over 24 inches. I know 5 drams was paired with 2 to 2 1/4 oz of shot. They may have been looking extra penetration with the 4 drams and 1 1/4 oz shot.

Kind Regards,

Raimey
rse

Last edited by ellenbr; 11/13/08 07:49 PM.