I retired my P-07 from bullseye competition, removed the Burris FF3 3moa and Springer Precision mount, trimmed the beavertail of Sugru, put the medium grip on, trimmed the JB-Weld from the trigger a little. Here is what it looks like now.
With the night sights, which are excellent,
I am out of Atlanta Arms 115 JHP so I tried a handfull of various 115 JHP while checking the rear sight position for a 25 yard zero with good results as shown below. I also shot some Rem UMC 115 gr practice and gun class ammo from Academy Sports. Best I could do was about a 4" group at 25 yards with the UMC.
The Rem 115 UMC simply doesn't seem to do well in these CZ pistols, compared to how they shoot in a SIG. The zero is certainly different between the rounds. Looks to me like a 115 JHP should be just fine. I moved the rear sight over about .020" after this group and called it good.
I only used the magazines with the standard base plates, no problems at all. I'll try the extended ones and some magazine springs from a 75B next.
I understand now why so many people like the P-07 pistols--not too big, not too small, just right...and still excellent mechanically.
Joe