When I was doing load development work after receiving my Whelen back from rebore I tried 180gr. bullets though not Barnes, accuracy was not what I was looking for so I confined myself to 200gr. & 225gr. bullets. 200gr. RN Hornady Inter-lok and 225gr. Sierra Game Kings shoot great in my rifle. IMR 3031 with 200gr. & IMR 4064 with 225gr. are the powders that give the best accuracy for me.