At least when alpha introduced dasher brass it was based off of fireformed lapua dimensions so i assume it still is. Norma brass has a 0.050" longer neck, I don't recall what other chamber differences there may be beyond that. Not sure what problems it would cause but I just don't like the idea of the brass neck being over 0.050" shorter than the chamber so I probably wouldn't do it unless you can find trustworthy experience saying otherwise.