I have a 1935 Francotte that was originally built as a short 10 but subsequently converted to 12 gauge with 3" chambers making the gun a heavily overbored 12 gauge with briley thin wall choke tubes. I have been shooting 1 3/8 oz ITX loads through IC & Mod tubes but would like to go to Full choke when hunting geese. What effect, if any does the 10 gauge bore and tubes have on the 12 gauge loads?
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MY thought is that once the load is in the tube it would respond to the choke constriction same as a 10 gauge load.
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Thoughts?
