I agree with John Burns. If you truly are going to limit yourself to 300 or 400 yards, bullet selection in the 270 is all you need. A 270 is .277 diameter bullet inch in a slightly bigger case along the neck from a 3006. The 3006 and 300 mag bullet measure .308 inch. So you are looking at a meplat difference of 11 percent. A 150 grain 270 bullet will give you ample Whomp to match a 30 caliber bullet all day long at under 400 yards. I look 4 a sectional density of .25 and twice the foot pounds on impact of the animals weight. I.E. 1500 foot pounds. If you go the monolithic bullet option I am sure the 243 elk slayers will soon chime in. Terminal ballistic research is a great web sight to study and review in my opinion. If I wanted to get another rifle to throw a whoop ass close range as you speak , that would perhaps out shine a 270 I would suggest a 45 70 ruger. A 450 marlin, a 9.3 x 64, or a bigger bore belted magnum. A classic Elmer Keith versus Jack O Conner debate. But in this new day and age the Barnes 243 elk slayers may chime in. Good luck with your hunt!
