What production time period applies to centerfire rifle headstamps “WCC” and “W C C”?
The style (letter spacing) of WCC headstamps is much more a product
of specific calibers and types of ammunition, than simply a change-over
date in the spacing between letters.
I cannot speak for rifle rounds, since I do not collect them, but as an example,
in .45 Automatic (.45 M1911) ball ammunition, WCC 53 is my highest date
for no spaces between letters and W C C 5 4 is my earliest date for those
with the letters spaced wide apart. However, on .45 Match ammunition, the
"WCC" is expressed with no letter gaps, like the older ball rounds. This is
undoubtedly because there are, by the number of letters and digits on the
cartridges, simply more entries.
On things like .38 Special +P rounds, and 9 mm Para +P rounds, made for LE
and other Government agencies, the letters had no spaces between them well
into this century, although on later ones, their is spacing between the dates on
In short, the question somewhat more complicated than it would have appeared
to be. The “WCC” was used, by the way, on at least some commercial 9 mm Para
ammunition. There is a “WCC 9MM” (possibly lower-case “mm,” I forget right now),
and “WCC 9mm LUGER,” both commercial cartridges.
Also, the W C C/WCC is currently the assigned military code for Olin- Winchester ammunition,
so it was not limited to use solely in the “WESTERN” production years.
The earliest use of WCC I know of on 9mm Luger is 1942, and it has been used off and on since then.