Best way would be to find someone who does lost wax jewelry casting and give them some hard wax bullets cast in a bullet mold and your silver and leave it to them.

"If you want to try melting silver I would use an MAP gas torch but oxy-acetylene is much better.  What one really needs is a graphite crucible but they aren't easy to fine or cheap.  A large piece of charcoal, not a briquette, might work.  You would have to hollow out a cavity for the metal."

Dave,
Nothing like deflating this discussion...   

I've dabbled in casting silver making a crucible out of graphite - cutting the cavity with a cherry then breaking the crucible  after cooling to extract the item.  Never got a complete fill in the groves.  Maybe if a guy made a graphite mold for a core to paper patch - the core would fall after cooling...   If the silver bullets fly like they did in the movie,  I'm needing a box of them just for my next match. 
All Hallows Eve is approaching and the need for silver bullets may be needed in a few areas around the country    Vall had the right idea. 
Greg

A simpler and maybe easier way to cast silver is the lost wax process. Simply buy some dental wax and turn it in your lathe to the shape you want of the bullet. Then attach a sprue to the wax form and cast  it in plaster. Once dried you can put it in the oven to melt the wax out, which leaves a perfect mold to pour the silver into. 
Of course this is a one shot deal unless you make a "tree" with multiple wax bullets and pour them all at once. But the bullets are easy to get out of the plaster mold and after cutting the sprue off they should be perfect. Old tin cans make the best containers to pour the molds in.

Why not a standard bullet mold?
I have a small furnace that will melt the silver, it uses pyrocones to determine the temp. High temp ceramic crucible.
Also have a small oxy-map gas torch.

I think charcoal would leach into iron at that temp, don't know about silver.

I have some gold plated .380's laying around. they were for the ammo company's anniversary, RWS maybe.

Aaron

Easiest approach would probably be to pour a round slug and turn it out on a lathe. I have done a few for a friend that were used for the old interior manual door locks for his classic car but not in silver.

Greg,

You are on the right track.  I wasn't trying to deflate the duscussion but help someone from making a stupid error....sand casting bullets.  A graphite mold should work fine.  I hope you can post some results.   

Marlineguy has the right approsch, lost wax casting.  Look it up on a Google, it's easy to do. Wth a centrifugal jewlery caster one could get very good bullets from silver or gold.   Now gold bullets would be extravagant!  A few hundred bucks per shot.   

John L is right, machine them.   

Dave



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There was an inexpensive vacuum casting kit available. I had one and made a lot of good jewelry castings in gold and silver. I’ll bet you could find one on eBay. Had the oven and everything.