Pat B. Posted June 24, 2019 Share Posted June 24, 2019 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 ! Link to comment Share on other sites More sharing options...
CSEMARTIN Posted June 24, 2019 Share Posted June 24, 2019 Joe Chambers posted on a thread regarding 9mm reaming. Here is the link: This should be a good place to start. Link to comment Share on other sites More sharing options...
ltdmstr Posted June 25, 2019 Share Posted June 25, 2019 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 . Link to comment Share on other sites More sharing options...
Pat B. Posted June 25, 2019 Author Share Posted June 25, 2019 Isn't a 9mm bullet .355-.356? Thank you both for your input... Link to comment Share on other sites More sharing options...
Sarge Posted June 25, 2019 Share Posted June 25, 2019 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 Link to comment Share on other sites More sharing options...
ltdmstr Posted June 25, 2019 Share Posted June 25, 2019 Jacketed are typically .355 or .356. Lead and coated are almost always .356 or larger. Link to comment Share on other sites More sharing options...
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