Please forgive the curt reply, couldn't resist!

As gadge says, that's why we make our own.
For those that missed it, the 'Guns'n'Game' article is still up:

Make Your Own Non-Toxic Shot.

One important improvement: Dave L now uses 25% ethylene glycol as the cooling solution. Works better, no messy diesel to wash off, non-flammable, re-usable, and no tricky overflow pipe required. Beauty!!