My local gun shop has a small surplus of the Federal Heavyweight for $26.99 each. They are all 3" and they have # 5, 6, & 7 shot. If you're interested I can give you their name and number and they will ship. I'm not sure if $26.99 is a good price or not, I've never shot the stuff but I may buy a box or two to try.
(http://img.tapatalk.com/d/14/05/08/7u8ytuza.jpg)
I should add, they are all 12 gauge