Ballisticproducts have .410 3"& 2 1/2 hulls in stock

[Electrod47]

Just purchased some. They have a flat rate shipping code to celebrate Fathers Day.

[turtlezx]

sent me email on that to like $10 shipping and about $.19 each
the black hi base 1s hold up better than the red low brass

[GBertolet]

I bought two bags. Not cheap, but you must consider they are already primed. About $7 worth of primers for each 100. Any new 3" hulls are not easy to find nowadays. Grab them while you can.