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45acp Tolerances

I was wondering if anyone can tell me where I can find the tolerances for the brass for 45ACP?  All the manuals I have list the throat diameter at .473 but the base is .476.  I have an inspection gage from Dillion that brass won't fit in if it is anything over .473 but when I measure it, I am at .476 to .478.  Wondering how much tolerance I really have.  My 1911's do not seem to have a problem shooting anything under the .478, maybe more but I have not tried.

Try this link.  It is a good site for 1911 info.

 

http://www.sightm19711.com/care/45acp.htm

 

I goofed and posted an incomplete/wrong link.  It is

 

http://WWW.SightM1911.Com/Care/45acp.HTM

 

Head minimum= .4718, max=.4734

Mouth minimum= .4672, max= .4732 (but .4730 is standard)

other dimension on the website.

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