First off, I had that I have aided in HI-Jacking this post.
Get the 2.5-10x40mm without the FireflySo, if one feels that the 30-06 is a 300 yard elk gun, this same person would have to assume the 300 win mag is a 400 yard elk gun
How does one determine at what range something is or isn't an elk rifle? I don't by in the the FOOT POUNDS theory myself. But let us assume that is the criteria you are using.
300Win Mag, WSM - 180 grain bullet at 3000fps,
30/06- 180gr bullet at 2800fps (we can range up or down a bit, but I will run with these numbers).
At 400 yards the difference in Foot Pounds is about 280. Pretty much the energy level of a 22magnum 40gr bullet at 1800fps, surely you can't have me believe the difference in elk steaks and one happily running over the mountain top is dependent on the energy difference of a 22 magnum?
Lets say you are an "Energy Dump" guy. The 300Mag exits the elk at 400 yards, since it is a good bullet the 180 now weighs 170 grains, and has expanded to .600. The velocity as it leaves the elk is now at 750fps. So we have a .600 diameter bullet at 750fps exiting the elk, with 240 foot pounds left.
Now the 30/06 decides to stay on the offside shoulder, it has "dumped" all its energy in the elk. The 300 Mag took 240 pounds with it on exit, so now the difference between the two is about 40 foot pounds (about what you get with a rock in a sling shot). So is that going to make the difference?
As long as the bullet goes through the vitals, and if it is a small caliber, has enough velocity to ensure some expansion along with penetration guess what..........dead elk. I don't care what the difference in "Foot Pounds" is.
I can drill through both shoulders of a deer with a 45 Colt and some hardcast bullets doing 1100 fps (for a total of about 800 pounds of energy AT THE MUZZLE). How about the boys with BIG CAST bullets killing Bison at silly yardages.
Nope, foot pounds doesn't wash it with me. Not in of itself anyway. To many other variables to consider