Those are great dies, and they will work well for your 6br Norma. The difference between the 6br Remington and Norma chamberings is in the length of the throat; the Norma has more freebore to accommodate longer, high-BC bullets used in long-range shooting. The Remington chambering has a shorter throat for lighter, flat-based bullets used in point-blank BR.
You will need a bushing or two with those dies. A .267 +/- .001 would be a good starting point.
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