I like the Remington olive hulls. Bought them a few years back from Ballistic Products. I still have a few hundred but none to spare. Wish they were still available. If I run low, I'll buy some loaded Remingtons just to get the hulls. I have some Federals but I've had problems with them. I shot a box of factory Federals and probably one third of them had splits in the rims of the heads. The Federals with the ribs in the plastic seem worse than the ones with the smooth plastic.