CZ P-07 barrel leading

[ThompsonCustom]

He was just talking 9mm's in general most cz come in at .3555

[Wobbly]

A quality CZ handgun of recent manufacture can vary that much in barrel groove diameter?  Color me..... disillusioned. 

Take three deep breaths.

Noylj is talking about 9mm barrels in general, not CZ in specific. I agree with TC, most modern 9mm are tightly toleranced. But way back in the 1970/80's when no one cared about 9x19, and you could count all the 9mmm guns on one hand, the barrels were all over the place.

[jolebole]

Yes. it's a 9mm P07. I'm using 4.3gn of N320 behind 124gn SNS. OAL is 1.115 (because cz chamber).My power factor is 133.  Which is about 1070fps. I shoot this load tru all my 9mm guns. STI, CZ, Glock. I'm loading on Hornady LnL with Lee dies and FCD at the end with super light crimp. Here's the round



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[painter]

I agree with ID.

If you're experiencing leading with coated bullets stop using the FCD.

It's resizing the bullet causing your issue.

[whitecap]

Have you double checked your COAL? You stated that you are currently loading to 1.115 in length. I have an 07 & 09 and can't load that long. With the .015 backset, 1.100 is safe for me. Just wondering?

[jolebole]

I usualy loaded 1.145 with copper plated or fmjs , but due to the shape of the SNS I dropped to 1.115 for safe chambering in the CZ. I consider 1.115 short:)

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[Wobbly]

I usually loaded 1.145 with copper plated or FMJs , but due to the shape of the SNS I dropped to 1.115 for safe clambering in the CZ. I consider 1.115 short

And how were these lengths derived? Have you bothered to read the stickies and determine your max OAL for these bullets in a CZ?

I'm loading on Hornady LnL with Lee dies and FCD at the end with super light crimp.

What the heck is a "super light crimp" ? This infers that you are changing the crimp for different loads or ammo. Explain please.

I'm with Painter. Ditch the FCD immediately.