You're probably not gonna find any .410 bird/target shot unless it's someone scalping old ammo at triple the price.
I was in the Bass Pro shop, Dania Beach yesterday. Sitting on the shelf were 6 boxes of #7 1/2 and 6 boxes of #6 shot. Remington. I called by neighbor back in north FL. I recently sold him a Marlin bolt action .410. He also has one of those Judge revolvers. I wound up buying two of each for him. They are damned hard to find.
