Hi OP. As for practice ammo, there are a couple brands that note on their boxes not to use in ported barrels, Blazer Brass is one of them (the manufacturer confirmed that to me as well), there likely is one or two more marked that way. Per those manus, this is due to thin plating that could come off; i didn't have any trouble when i used blazer (before learning it was not recommended) but have stopped "just in case".
I have a PC Shield, 750+ trouble-free rounds thru it, no problems with ammo, mag springs, etc..... All rounds spent have been 115 grain. For the range i use Remington UMC and Herters. I've been told Speer ammo is good to go with ported barrels, and the Federal cs dept said their American Eagle line is suggested but not Federal Champ.
I've also shot Hornady Critical Defense and no issues with it at all.