It has a flat bottom and yes not to confuse I consider it a tip for a shell . The bottom has a typical shape most bullets have at bottom , the edge is concaved for non obstructive fit .



The weight is the mistery .....
this is smaller then a 5 pound steel mallet head
also solid stainless I believe is not any more heavy then it's ferris steel counter part size for size
I've held many dense metals in my hand
this has that weight for size that lead has , but the surface is not lead.
I have heard for larger artillery -Zinc has been used as it enhances accuracy