Rio 12gauge at SGammo.com

[b-dubya]

Looks like they have high power 00,#4buck, and low recoil slugs in stock. I've shot about 30 of the low recoil slugs with good accuracy at 25 yards and no problems. Seems to be good ammo for a decent price. It's about 56 cents per round on the #4 and 70 cents on the slugs after estimated shipping.