What's Wrong with my CZ-SP-01?

I shot 5 targets today and all I can find is one big hole. Seriously, I have never shot a more accurate out of the box 9mm than this CZ. Even when I thought I "pulled" a shot, it still landed in the right spot.

I got some good groups previously, but I could not get a consistent sight picture with the all black rear target sight mated with the red fiber optic front. I drilled the rear sight for white dots and the difference was dramatic.

I aim with the front sight, but I was not able to pick up the rear sight consistently with my peripheral vision. Now I can.

I am not a great shot, this CZ just makes me look that way.

If you are thinking of a CZ, DON'T DO IT. CZ's have really messed me up; I love variety, but nothing (else) interests me anymore.

Tecolote,

Stock CZ barrel is used.

This is a custom shop SP, the only extras are an action job to slick the DA/SA, a 15# mainspring is installed, upgraded sights, and the CZ Cocobolo grip panels are used in place of the stock rubber ones.

RNB65,

I know, I know.

JDGray,

No, they were at 50 yards. . . . and I never lie

They were shot at 10 yards at an indoor range. JL Braun makes a very good point. The heft of the SP and the bore axis instills great confidence, making the SP an oustanding range pistol.

On this day, I hit the 500 round mark using factory loads. I had one stove pipe on round number 12 the first day I shot it and it has not hic-cupped since.

1SOW,

I think it was Fiocchi. I have used CCI brass cased Blazer and Fiocchi (this is what the indoor range sells). I call it a stovepipe, the case lacked just a hair of clearing the chamber. I just "thumped" the case and the slide closed. I hope this is because the pistol was very tight when I took it out of the box.

Or it could have been an improperly charged round as well.