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Old May 23, 2009, 06:02 PM   #1
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Join Date: May 28, 2008
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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.
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Old May 23, 2009, 06:39 PM   #2
Bill DeShivs
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8X18 uses a larger bore diameter.
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Old May 23, 2009, 11:44 PM   #3
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9X18mm Makarov uses a .363" bullet instead of a .355" bullet common to most other 9mm pistols.
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