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Pat B.

9mm throating reamer

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I need to throat a barrel..  Very familiar with rifle reamers and throaters, but not so much with pistol reamers..

 

This is for a 9x19 barrel with a short throat to be used in production and CO..  One of the tool vendors has a throater they're calling for a 9mm

but the diameter is .3575.  I'm sure that would be correct for a .38/.357 but seem to recall you use a .356 reamer for the 9mm?

 

Can anybody enlighten me ?    Thanks !

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Joe Chambers posted on a thread regarding 9mm reaming.  Here is the link: 

 

This should be a good place to start.

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I'd say .3575 is going to be too tight.  For throating reamers, Manson's spec is .0005 - .001 over bullet diameter.  I've seen others that state .002 over .

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16 minutes ago, Pat B. said:

Isn't a 9mm bullet .355-.356? 

 

Thank you both for your input...

Generally but some run up to .358 bullets in 9mm. My 9mm barrels both say .355

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Jacketed are typically .355 or .356.  Lead and coated are almost always .356 or larger.

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