Are you seriously going to keep insisting that the entire ammunition making world is wrong about trying to make bullets that have expanding fronts?Just like I said. Flat surface doesn't do anything in anything below 44mag. And it has to be a hot 44mag (rifle fired) to start doing what you think it does.
After all - what is the face of an expanded bullet - but flat?
& why? Because it works.
I'm sorry but - this is too ridiculous for any further back and forth.