Ap M2 SL 9745

[Greg V]

Got my AP from the CMP yesterday. Looks like all three cases are SL, which I believe is St. Louis. Anybody know what year LOT SL 9745 was manufactured and whether or not it is corrossive?

Thanks, Greg V

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.

[Cosine26]

According to the information that I have Saint Louis Ordnance Plant converted to non corrosive primers at the following lot numbers:
30-06 Ball – Lot No. 9420 – May 1952
30-06 AP- Lot No. 9467- July 1952.
Therefore it would appear to me that you have a non-corrosive lot.
For loose ammo (i.e. Lot No. unknown), I would consider any “SL” ammo earlier than SL-53 to be corrosively primed.
Hope this helps

[Cosine26]

In my early reply I neglected to cite the source of my data. It taken from an article entitled ’Nonmercuric, Noncorrosive Primers’ published in the "NRA ILLUSTRATED RELOADIND HANDBOOK" released by the NRA circa 1961.

[Maniac]

Got my AP from the CMP yesterday. Looks like all three cases are SL, which I believe is St. Louis. Anybody know what year LOT SL 9745 was manufactured and whether or not it is corrossive?

Thanks, Greg V

I opened up a recently purchased can of SL 9743 and it's headstamped S L 5 3
HTH