Can I use Babbitt metal for bullet casting?

Bearing or Babbitt alloys are used primarily by the automotive and related industries for rod, cam and crankshaft bearings. There are now hundreds of different compositions of such bearings, but most of these are slight variations of twelve major categories. Chart IV details these twelve major categories. Some of them would make fine bullet alloys, like number nine and others would be terrible, number three for example. Unfortunately, there is no practical method of determining exactly which of these alloys a scrap supply consists of - only by direct chemical analysis. But if you have found a Babbitt alloy that makes good bullets, and they shoot well, there is no reason not to use it for bullets.
Pouring. Heat the iron bearing shell with a torch until it’s 200-300 degrees (water will quickly evaporate at this
temperature but not sputter, and cardboard dams and collars won’t char). If the shell is too cold, the babbitt will cool
too fast to flow properly resulting in wrinkles and voids. If the shell or babbitt is too hot, blow-holes will result or the
metal will cool too slowly allowing the heavier metals to settle out, changing the hardness of the bearing (or giving
inconsistent hardness). Heat the shaft too, but keep it even or it could warp.
Just before pouring, stir the molten babbitt to mix up the metal then skim off the “dross” (dirt and/or oxidized metal)
that’s floating on the surface of the molten metal. Ideally, your ladle should be big enough to pour the bearing in one
filling, but if you need two, be sure to work fast.
http://home.earthlink.net/~potomac008/Lead Alloys.htm

http://www.jedc.org/wood/Spring_2000.pdf