A few years ago someone, I don't recall who, sent me the drawings for making the mould to cast a hollow based, truncated cone, projectile (ash can round?). I've moved, lost the print out, and lost the image due to hard drive crash.
It was also posted in a thread somewhere on this forum, but I have been unable to find it. Is there a kind soul who would either direct me to it or PM it to me, please?