I found three spots on the internet that has the Fireballs and this is what they say: "Crosman is leading the competition in affordable hunting pellets featuring great new technology. The new Crosman Fireball pellet is a revolutionary new hunting pellet combining the best attributes of a lead pellet with a steel head, resulting in better accuracy and penetration at longer ranges. Great for use in 1000+ fps hunting air rifles.
Crosman Fireball Pellet .177, 10.5 grain. Topped with steel ball. Combines a lead body for accuracy and velocity with a hard copper plated steel ball for the ultimate in long range penetration.
Tin on blister card. Qty. 250
They were like $5.50 for 250 pellets
Model FB177