Sam,
Let us know what you end up with.
I have been considering the same thing. (Even thought of selling one of my 480's)
Here is some that I have been looking at-
http://www.budsgunshop.com/catalog/compare.phphttps://www.underwoodammo.com/45-acp-p-255-grain-hard-cast-flat-nose/Or this with heavier springs
https://www.underwoodammo.com/45-super-255-grain-hard-cast-flat-nose/Glocks just don't work for me, but I may consider an XD 45 too.