Need information for bullet headstemp information

Please inform for me bullets headstemps marks is J 8 C ( 10 am , 14 pm and 18 pm position ) What size of bullet ( I guess by my eye for size 7.62 x 51 or 5.56 x 45 I’m not sure ) and what years is product and company production? Thank you very much for your information. ( sorry I’m not so good for english language ) If someone know please inform link for me.

Headstamp is most likely " C J 8 ".

From The Reference Book On .223 REMINGTON (5.56 X 45MM) CARTRIDGES, R. Fuchs, 2012:

You can download this book here:


Thank you very much for your help.

Please help me again I just see in the book for headstemp CJ8 from armco international corp boylston massachusetts but I can’t find the picture headstemp and year product in the book. Please help me again. How I can find year product. Thank you very much.

I found it ready Thank you for your information.