5.56 case sizeing

[azfred]

I must have got lucky, I ran 20 rounds through just as a test and didnt loose any, they all came out with .305 necks. my die does have a long expander and not the ball type, I am told this is easier on the necks.

also, what would be a good starting powder just to get going, Im going to load some 200 smk sub sonic and some 150 smk super sonic.
Fred