Yes, the Rem Brass will work in a Norma Chamber. I think Early R-P Brass had a longer neck, But the stuff I get measures 1.556" and is consistant. I just fire-form it to the Norma Chamber. I'm sure you could find your answer on 6mmbr.com. But it works and works well, I pay .55 a piece for the primed brass.
[img width=337 height=450]http://i45.photobucket.com/albums/f59/pahog/group-1.jpg[/img]
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