Dating Remingtons...

The following letters correspond to the month (first letter) and year of manufacture starting in 1921 and ending in 1972 (next one or two letters):

B-Jan	M-1921	C-1934	SS-1947	G-1960
L-Feb	N-1922	D-1935	TT-1948	H-1961
A-Mar	P-1923	E-1936	UU-1949	J-1962
C-Apr	R-1924	F-1937	WW-1950	K-1963
K-May	S-1925	G-1938	XX-1951	L-1964
P-Jun	T-1926	H-1939	YY-1952	M-1965
O-Jul	U-1927	J-1940	ZZ-1953	N-1966
W-Aug	W-1928	K-1941	A-1954	P-1967
D-Sep	X-1929	L-1942	B-1955	R-1968
E-Oct	Y-1930	MM-1943	C-1956	S-1969
R-Nov	Z-1931	NN-1944	D-1957	T-1970
X-Dec	A-1932	PP-1945	E-1958	U-1971
	B-1933	RR-1946	F-1959	W-1972

Using barrel codes (such as those listed above) to date the manufacture are reliable on Remington rifles, as the company rarely changed barrels on a customer's rifle.

Using these barrel codes to date a shotgun is somewhat unreliable, as shotgun barrels are often interchanged at random. One needs to be sure that the barrel is original to the gun before trusting the Barrel Code listing, above.