No personal experience yet (got 2 boxes waiting to be patterned) but from what I hear, if your gun will handle steel shot it will handle Hevi-shot. Use a choke made for steel, too. if your choke says "LEAD ONLY" don't use it with the Hevi. (Again, from what I hear.)

Also, you shouldn't need a heavily constricting choke with Hevi. Use a more open choke for better patterns. I would say to try patterning with your full and modified chokes. That's what I intend to do tomorrow.
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