Thank you. That is exactly the type of answer I was expecting.
Where did you come up with the idea that I believed that larger caliber projectiles are always heavier than smaller caliber projectiles?
I did leave the original post too open-ended allowing for non-expanding projectiles made out of expensive exotic materials that could only be produced in small quantity and fired from unconventional firearms. Other than clarifying that I was interested in conventional expanding bullets fired from conventional firearms I don't see how I moved the goal posts.