HI all, I'm new in here so don't beat me up too bad to start with. I've always shot 180's in my 300 RUMs , but I just picked up some 200 grain partitions to try and i'm pondering what to start with. I have several different powders on hand- IMR 8133, 7828 ssc, Magpro, H-1000, different 4350's and even a pound of the elusive N570. What kind of accuracy & velocity are you guys getting form the 200 NP with various loads ?