Winchester Primer manufacture date code

[echotango]

Anyone know how to read the manufacture date code on Winchester primers? 

My google-fu came up with very old versions.  Thanks

Here is what I have:

 

HBL049G

KGL105G

NML592G

NMLD312

NDL493G

NEL545G

PDL631G

PCL616G

 

 

 

Edited July 8, 2020 by echotango

[CHA-LEE]

Why not call Winchester and ask them directly?

[echotango]

They are email/message only at the moment. I sent a message. Not sure if I'll hear back. 

[Farmer]

If you do get a meaningful answer please post it. Thx

[ohsevenflhx]

I hope you have better luck than me. I emailed Winchester twice in the last year asking about primer code dates, and couldn't even tell you if they got the message. No reply, nothing. I had several thousand and wanted to use the older ones first. 

[echotango]

Same here, I have 120k.

 

I found this for their ammo.  Might/should be the same?

 

For ammo the years are (note A, I, J, O, Q, and Z are skipped):
B - 1948 1968 1988 2008
C - 1949 1969 1989 2009
D - 1950 1970 1990 2010
E - 1951 1971 1991 2011
F - 1952 1972 1992 2012
G - 1953 1973 1993 2013
H - 1954 1974 1994 (2014)
K - 1955 1975 1995 (2015)
L - 1956 1976 1996 (2016
M - 1957 1977 1997 (2017)
N - 1958 1978 1998 (2018)
P - 1959 1979 1999 (2019)
R - 1960 1980 2000
S - 1961 1981 2001
T - 1962 1982 2002
U - 1963 1983 2003
V - 1964 1984 2004
W - 1965 1985 2005
X - 1966 1986 2006
Y - 1967 1987 2007

Edited July 9, 2020 by echotango

[echotango]

The codes above appear to be accurate.  I had years marked on some that matched and the ones I bought end of 19 started with P. 

Edited July 9, 2020 by echotango

[echotango]

I got a response from Winchester. Sort of. 

 

Answer:

The information you requested is considered proprietary information and is not published, sorry for the inconvenience.