Congratulations! IMHO all the hand cycling of the slide in the prep threads is not necessary. I've just cleaned and lubed my new Kahrs and then went out and shot them. For range ammo, you're correct about the perfecta and you can include Fiocchi FMJ into the same category. Some people have modified the extractor and then they can run those two brands. Other than those two, any round nose FMJ should work. Blazer and PMC are a couple of my favs. For defense, critical defense, and any round with the XTP bullet works well. I've 'progressed' to the Underwood load of Lehigh's Critical Defender. It's not my EDC, but it is one of my favorite guns to shoot at the range!
Kahr P380 x2
Kahr K9
Kahr CM45
Sig P938
Sig P365 x2
Sig P322
1911 Range Officer 9mm
M&P 9mm