A friend of mine is in the process of buying a .300RUM. He wants to shoot 130gr bullets for deer, and 168gr bullets for Moose/Elk. I told him that these two bullet weights for the .300RUM were to light, and that he should be looking at either 180gr or 200gr bullets. He tells me that ballisitaclly the 130's and 180's are very similar, and I just do not believe him. What do you guys think?