Casting is a lot of fun! I've spent many joyful hours turning scrap lead into pretty bullets and some ugly ones too, best part is there is no need to keep a ugly bullet, just re-cast and make it pretty.
May want to try the macro setting on the camera, or at least find out what the minimum focus distance is(how close you can get) and stay at least that far from the subject(bullets). Photography, that's my other hobby(job).
Jimmy K