My players asked for these, since (now) ST 18 Vryce uses a sling as his missile weapon.
Meteoric Sling Bullets and Prodd Bullets. Normal cost for this ammunition is $0.10 a pop, so meteoric costs a relatively astronomical $2 per bullet.
Notes: This is kind of cheap for what it does, but I figure, you can use the little meteoric leavings that just won't quite make a knife or sword and is thus otherwise less than easily salable. So the smith has got to be feeling like you offered money in return for hauling away his trash for him. It also assumes iron bullets would cost the same as lead ones, but I'm okay with that, too, since lead isn't terribly cheap either. If you're not, up the price a bit. You could make these +199 CF ($20 each) and they're still a bargain for a delver with wizardly enemies. But I'm not into raising the price of these just because the final cost isn't that high.
As usual for Meteoric, these bullets will shoot right through Missile Shield or Deflect Missile, and ignore the DB bonus from the Shield and the DR bonus from the Armor spell. They don't ignore the DR bonus from Fortify in my game, however, because of prior rulings that Fortify fundamentally strengthens the underlying material, it doesn't provide some kind of magical force field that meteoric could ignore.
By the way, this worked fine when they used them, too.