Well I guess I am the odd ball. I like the 225450. I have a Lyman Ideal single cavity mold.
I use it mainly in a 223 T/C contender 14 inch barrel with a 12 inch twist. I find it very accurate at moderate velocity.I have never pushed it fast like I have the 225415.
Like BCall I use a magnifying lamp to inspect each boolit and then weigh to plus or minus 1 tenth grain................Terry