Thank you, gentlemen. I understand about the choke being the amount of constriction from bore to minimum choke diameter and the GH and Trojan are close enough to account for my inaccuracy or a variation of the bore/constriction formula. I don't have a way to measure the actual bore diameter. I suppose I was just surprised that the Repro was so different. Dean, I hadn't considered the modern vs early differences in the way shells were constructed. Further, since this is a Steel Shot version it could be even further skewed in that regard.
Thank you for the responses. I am just getting my head wrapped around all of the intricacies of these guns since I acquired them earlier in 2020 along with an LC Smith and two Ithaca NIDs. Previously, I was only familiar with my O/U with screw in chokes.
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