Precision Delta 115 grain hollow points. These shoot very good groups in every CZ 9MM we have.
I've tried 124 grain LRN, 147 grain plated hollow points, 124 grain plated hollow points, 124 grain hollow points, 147 grain LTC and 140 grain LSWC but none of them stacks up to the PD 115's, so far. I'm still trying different powders. I also have some 123 grain coated lead bullets I've not yet tried. Brands are Berry's, Nosler, Missouri Bullet Co., Rainier, Summer's Enterprises, Zero bullets and one or two others I can't quite remember right now.
Bought some different powder a few months back and may buy a different type this morning at the gun show.
Maybe my standards are too high.