I have tried a few different bullets in my 300RUM the Hornady 178 grn A-Max & the Hornady 208 grn A-Max I am going to get a box of the Hornady 190 grn Interlock & give them a try I also have been considering the Sierra 200 Gameking SBT I am using Hodgdon RETUMBO & Hodgdon H-1000 . The load iam using is a 90.0 grains of the H-1000 It seems to shoot very good what do any of you fellas think of the 300RUM ?