FUCK ME that is fast!!!
I had a 300 RUM aswell, loading H-1000 180 Swift Sirocco, 3200 fps zeroed @ 200 yards, 18" low at 500 yards. But i didnt load that hot! I like to use brass more then once
I shoot the 40 gr Bergers in my 204 and they are deadly, also the 140 gr VLD in my 270.