I was going to brake my 338 rum, but am now thinking of a barrel upgrade at the same time. I am trying to keep it a sporter style but thought of slightly increasing the contour and have it fluted to help compensate the extra weight. Should I keep it a RUM or consider making it an edge? I plan on shooting 250gr bergers. If I go with the edge can I use my rum brass, or would I need all new brass?