Carbine Noob from Virginia

I have modified a Saginaw Gear to run 9mm. Strangely enough, SAAMI specs allow .022 head space .754-.776, which is the same as 7.62 x 33, 1.302-1.280.= .022. I was running an Iver Johnson cast bolt, which initially spaced inside .022. I just kept on shooting it until I finally became leery of it and pulled it. Just for kicks I measured the head space at .035 and it was still shooting. That’s .013 past the maximum, which would equate to 1.315 in a 30-carbine action.

9mm chamber pressures don’t duplicate 30-carbine pressures and I certainly do not recommend trying it in a 30-carbine, which could possibly cause some serious problems. It’s just an indication that a firing pin can still ignite a primer at considerably sloppy long head space and can serve as a reminder to check head space on occasion, especially on an often fired action. I was not trying to see how far I could go. The cast bolt just self destructed long before I thought it might. I no longer let cast bolts get anywhere near a carbine action.

Printed copies turn up at general used book stores as well as places that specialize in military books and WW2 - Korean conflict militaria.  Nicolaus is a small company that reprints some of the manuals  (hyperink in the second post of this thread).  There may be others currently reprinting as well.  Just be carefull that the reprints are complete.  For example there is an FM 23-7 reprint that only contains the first portion of the manual.  

The Club's Publication page has the details such as size and number of pages for nearly all. 

http://www.uscarbinecal30.com/books.html ;

Thanks again for the info and links. 

Assuming you want a field manual and a tech manual, in my opinion can't go wrong Nicolaus's reprint of the 1944 FM23-7, and the 1953 version of the TM9-1276.  Same price range as an original, but easy to lay open on a table.  The field manual is an enlargement.

  https://www.nicolausassociates.com/M1_Carbine.htm