You missed the part where OP said he was loading for a couple of CZ's.

Reread my first post.

9mm is really easy to create accurate loads for a rig.

From the start, really need to slug the bore to figure out what bore size it has if a production barrel.  With most production type barrels, they are not .355", but somewhere around .356~.358 isntead (don't ask).   So by knowing what size the bore is, really tells you what size bullet you will needing as well.  If a hard jacket bullet, then you need that size bore bullet, while if you are loading softer outer surface plated or cast PC bullet, may need to size the bullet up .001 over the bore size instead.

Next we come to the chamber on the barrel, and again if a production type barrel, bank that it on the loose side.  This is a good thing to make sure it feeds, and can even be over come to a degree with hand loading to make the barrel take drive as well (will get to this later).

The last thing we need to check is the lock up of the barrel to the slide, and even to confirm that you have the the correct recoil spring in play for the reload being used.
If you have say a 92fs, then it possable to rework the slide cam lock to get the barrel to lock up tight in the slide, while on some other designs where you have the hood of the barrel locking up to the slide, may have to rework the barrel hood to get a better/tighter lock up instead.


Ok, lets focus in on the load for the rifle.
From that start, sperical powder is going to meter the best out of a stock dispensor, while if you are going to reload with flake or short grain extruded powder, may have to mod the dispensor to get more uniform throws isntead.

Back to the bullet, and it really needs to be sized match the barrel bore.  Here is where casting, PC coating, and casting your own really pays off, since you can end size the bullet to match the bore size.

As for the COL of the round, you only want about .003" jump to lands, hence just enough that the round will feed without problems and the bullet not embedding, but not a ton of jump to lands when the round is fired instead.  Each bullet ogive is different, so it just a mater of figuring out the needed COL for that bullet type to end up with a min jump to lands.  Also to point out, with this min jump to lands, you end up with less blow by as the case if firing forming to chamber.

Regarding primers, even through you may be using a spherical powder, do not use a mag primer for standard 9mm loads.

The last thing is working up the ladder with powder amounts for the load, and while doing this, make sure that you are recoil spring'd correctly.  
There are two trains of though for correctly spung.  The first is that you want a ejection distance of around 5' for the spent cases, but this only works if the ejection parts and port have been tuned for a clean path out.  In say a glock, you can't use this distance as your gauge since the pistol is not ejection path tuned to put the brass in the same pile, and even since the gen 4 guns have less ejection path distance due to the new 2 stage recoil spring assembly.  

The second way, and the better way, is to just see if the front sight is coming back down on the target you are aiming at once the slide has locked back up.  If the slide/front sight is ending up above the POA after the slide comes back, the spring is too weak for the load, while if the front site is ending up under the POA when the slide comes back, then the recoil spring is too strong instead.


Really to sum it up, tell us what pistol you have, and we can help with the needed mods in the first place to get it to shoot tight to begin with, then dial you in on the loads to finalize it shooting it tightest groups it can in your hands.

I blew it, wrong thread.

Another 9mm thread that I posted in.