Based on articles in the DGJ, shotguns larger than 10 bore were banned from migratory bird hunting. This happened in 1913(?) or thereabouts. I cannot say whether any other game is allowed to be taken with them, though. I don't see why not. I have never looked further than the DGJ articles.
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GMC(SW)-USN, Retired
'Earnest Will'
'Desert Shield'
'Desert Storm'
'Southern Watch'
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