Back in the early 80's, I hunted turkeys with a 1939 3.5" Ithaca NID 10 (#500691). It was a brute and I handloaded 2 1/8 oz for the left barrel and 2.5 oz. for the right in a 55% load for close-in birds. The right barrel was a shoulder-fired Claymore mine round of #3 bird shot and it was loaded with just a gas seal, no cup. I shouldn't have sold that gun.