Thread: Lupo 30-06 load development "the lone wolf"

Have you weighed your new brass & how does the weight compare to old brass you were using? I think MD is probably on the money, the new brass is heavier thus thicker walls, less internal capacity reaching pressure earlier and more fps for same powder load. In my 6506ai and different brass (Norma vs RP) there was about 10gn difference in weight of brass and that needed about 1gn difference in powder to compensate (ie find accuracy node).