Wax bullets are fun,,, So are cork balls,,,,,
It's like catzor said,,,
Melt some paraffin in a pie plate,,,
Pull the bullet and powder from a .22 cartridge,,,
Use the empty like a cookie cutter to make wax wadcutters.
I learned how to do this from an article in Popular Mechanics in the early 60's,,,
My Poppa and brothers had a blast in the garage during the winter months.
I used a depth of just a smidgeon over 1/4" of wax,,,
Shot from a revolver they have fairly impressive velocity,,,
Do not shoot yourself in the foot to see how powerful they are.
Also, I found some cork balls at Hobby Lobby,,,
They were a perfect fit for the cylinder of my .44 Remington cap & ball revolver,,,
Just the percussion cap was enough to accurately engage a large pack of feral Pepsi cans at 10 yards.
Aarond