What software can be used to design ammunition?

I ve recently gotten curious about finding my calling so to say and I ve always been keen for inventing. I have a decent understanding of physics and mechanics, and want to try designing ammunition. So the question is, what program or programs could I use to take my ideas from the concept stage further. A program... show more I ve recently gotten curious about finding my calling so to say and I ve always been keen for inventing. I have a decent understanding of physics and mechanics, and want to try designing ammunition. So the question is, what program or programs could I use to take my ideas from the concept stage further. A program to design the object, and test it without moving into the prototype stage would be nice.
2 answers 2