I see it being cost effective when reloading (not including my time). Some people do it not to just save money, but for accuracy and hobby purposes. It's a fun hobby if you ask me.
I'd like to see how different fmj's look upon impact. Any charts/pix on that? Cool chart though, thanks for the post/info
Handgun FMJs do not fragment/deform when shot unless they impact a hard metal target.
Many types of rifle calibers (223 is the best example) actually explodes with relatively violent force. This is what a 85gr frangible round does, the problem being pistols lack enough force to send the fragments far into a target. Birdshot is very similar to this, lots of pieces of lead but they aren't too effective.
Here are a few pictures of FMJ from a 223