.308 Die Markings

[yonderin]

I've got two sets of .308 RCBS dies. One set has a 64 stamped on it and the other a 72. What is the difference?

Is one a small base set?

 

[Hitzy]

Probably the years they were made?

 

[kamlooky]

It is the years they were made.

 

[yonderin]

Thanks. That one didn't occur to me.

I thought one set was Small Base but doesn't appear to be marked.

 

[just having some fun]

Small Base = sb on rcbs

 

[yonderin]

Must have disposed of the small bases somewhere's along the line (I know I had a set). Been so long since I loaded .308, I was surprised to unpack two sets of dies.