I know Norma has more freebore than the other to make room for the large bullets. I think the land angle is cut different too but I am not quite certain. My old 7 BR stock XP would shoot sub MOA all day long. The HS was even better but I would think the 6BR Remington would be the ticket not the Norma YES?

If it jams force it! If it breaks it needed replacing anyway.