How many rounds of defensive ammo should I run through my EDC to determine my pistol likes it?

I'm new to CCW and this sub, and have been researching defensive ammo to run in my P365. As an engineer that's somewhat new to firearms, I dont want to just buy what everyone else says, I'd like to make sure it works for me.I know lots of people like Hornady Critical Defense and Speer Gold Dots, as well as Winchester Ranger/SXT, but I would like to sample them for myself. Just wondering how many is enough to determine they'll feed and eject reliably, and with relative accuracy on target.Sorry if this has been asked before, but I didnt see any results in a search. via /r/CCW https://ift.tt/2CraaXr