Brass identification question

[Supersapper]

Greetings!

I am having some problems identifying a few brass cases.

1. In the "Brass in Question" pic, there are several cases I can't identify.

---Far left 3 cases have L C 6 9 circling the primer
---Upper Middle 2 cases have K A 7 4 circling the primer
---Bottom middle 2 cases have H X P 74 and the other has H X P 76
---Right 4 cases have 30 M1 FC 09 around the primer

They all appear to be exactly the same size as a 30-06 casing. Are they in fact 30-06 cases?

2. Does the NATO cross on .223/5.56 casings always indicate that the case is 5.56?

---I have an MRE box full of cases with + WCC 13 around the primer. Are they 5.56?
---How do I determine which calibre the case is if the NATO cross isn't the be-all-end-all?

Thaks in advance for any help!

[ducky_0811]

Google the head stamp if not sure next time, but yes, those are all surplus .30-06 casings. As to the 5.56 question, the NATO circle cross head stamp, it usually indicates a casing made to NATO specs and loaded to 5.56 pressures but never take it at face value.

[Bumslie]

http://bit.ly/1h31m1I

[Citadelgrad87]

Greetings!

I am having some problems identifying a few brass cases.

1. In the "Brass in Question" pic, there are several cases I can't identify.

---Far left 3 cases have L C 6 9 circling the primer
---Upper Middle 2 cases have K A 7 4 circling the primer
---Bottom middle 2 cases have H X P 74 and the other has H X P 76
---Right 4 cases have 30 M1 FC 09 around the primer

They all appear to be exactly the same size as a 30-06 casing. Are they in fact 30-06 cases?

2. Does the NATO cross on .223/5.56 casings always indicate that the case is 5.56?

---I have an MRE box full of cases with + WCC 13 around the primer. Are they 5.56?
---How do I determine which calibre the case is if the NATO cross isn't the be-all-end-all?

Thaks in advance for any help!

LC is the lake city plant, us mil surp. Hxp is the same deal, but is the Greek equivalent.