I believe the Norma has a longer neck. I'm in the process of putting together a 6 Dasher hunting gun right now. I specified to my Smith to chamber for the Norma brass. Should be a nice deer gun for out to 500 yds or so and only use 30+ gr of powder.Cant remember exactly but I think I remember guys have trouble using the 6 Dasher norma brass in the Dashers that were chambered for Lapua brass, seems there were some dimensional differences and guys started specing reamers just for the norma brass. A search on accurateshooter will probably find what was the problem.
I ordered a 7t 3 groove at 28".
Anyone know an approximate speed that should be seen out of this?