Bought a new CZ 75 in a .40 S&W. Loaded a few Blue Dot loads (had powder on the shelf)...they stunk.
Bought a jug of Titegroup. Nice stuff. My load consisted of the following....150gr Nosler JHP...WSP....Win brass...5.5grs of Titegroup....OAL of 1.130. This load is very accurate in my CZ. I will be loading some heavier bullets such as 180's. I LOVE MY NEW CZ 75....

My son shoots an STI 40s&w in IPSC matches and I load 4.4 grains of V/V N320 behind a 180/185 PRECISION BULLET black bullet that shoots great in his gun.
If I couldn't get the N320 I would use the titegroup powder to load his ammo.

Larry

Larry, I don't have access to that particular bullet but I do use Vihta powders. What velocity is he getting with that load? Is he loading to standard max overall length or longer?

I would refer you to the Hodgdon reloading Book and check out the HS-6 Loads, I had pretty good luck with them.

180 GR HDY HP/XTP
HS-6 6.9grains 976 FPS 32,000

I have sold my CZ 40, but it really liked six grains of AA #5 behind the Lyman 401043, which was originally designed for the .38-40.