polygon barrel tolerance?

Scragglygoose · May 23, 2009, 07:02 PM

Hope I'm asking this in the right forum. I have a CZ-82 9x18 that has the polygon rifling. If I drop a .356 bullet down the bore it falls right through, a .357 dia. bullet has a small amount of drag but can be easily pushed through. I know I can't drop a .356 bullet down the barrel of a 9 mm pistol so is this normal for a polygon barrel or is this thing just shot out? The pistol has a 1983 manufacture date on it and it looks very good overall.
Thanks

Bill DeShivs · May 23, 2009, 07:39 PM

8X18 uses a larger bore diameter.

Scorch · May 24, 2009, 12:44 AM

9X18mm Makarov uses a .363" bullet instead of a .355" bullet common to most other 9mm pistols.

May 23, 2009, 07:02 PM	#1
Scragglygoose Junior Member Join Date: May 28, 2008 Posts: 1	polygon barrel tolerance? Hope I'm asking this in the right forum. I have a CZ-82 9x18 that has the polygon rifling. If I drop a .356 bullet down the bore it falls right through, a .357 dia. bullet has a small amount of drag but can be easily pushed through. I know I can't drop a .356 bullet down the barrel of a 9 mm pistol so is this normal for a polygon barrel or is this thing just shot out? The pistol has a 1983 manufacture date on it and it looks very good overall. Thanks

May 23, 2009, 07:39 PM	#2
Bill DeShivs Senior Member Join Date: April 7, 2006 Posts: 6,458	8X18 uses a larger bore diameter. __________________ Bill DeShivs www.billdeshivs.com

May 24, 2009, 12:44 AM	#3
Scorch Senior Member Join Date: February 13, 2006 Location: Washington state Posts: 11,039	9X18mm Makarov uses a .363" bullet instead of a .355" bullet common to most other 9mm pistols. __________________ Never try to educate someone who resists knowledge at all costs. But what do I know? Taylor Machine