codyadams. minimum 1000 ft lbs is recommended for deer, 1500 for elk. back that thing up until you get to that number. Then consider that there are a crap ton of elk at way under that 7000 ft limit all over the US. So using al altitude that "justifies" a position is not doing the fella any justice. Maybe he's gonna hunt in the clearwater region of Idaho that is between 2000 and 4000ft.
Not sure where energy applies in this specific discussion, I never mentioned ft lbs, the only point I was referencing was about velocity, and that in your opinion, you wouldn't get enough out of a creed to expand at distance. I was simply saying that isn't the case, and can be based on factual data. Energy is a different discussion.
As far as elevation, here it is at roughly 5000 ft, max range for useable velocity for expansion per Berger over 900 yards -
And max range for expansion at roughly 1000 ft, over 800 yards.
As far as energy and other aspects of a shot, that is up for the individual shooter to decide. However the point being made here is very simple, it is about a known quantity - velocity needed for proper expansion. The solid number referenced is based from the bullet manufacturers recommendations that they came up with after doing ballistic testing of their bullets.
I'll elaborate on what I said in my previous post. Velocity (while of course a consideration) would not be my main concern in using a 156 out of a creed on elk. I would be more concerned with shot placement, the elks stance at the shot, the environmental conditions at the shot, avoiding the massive shoulder joint/bone that is larger than your fist, especially on a big bull, and a few other aspects. Useing under-dog cartridges to take large north American game is not a new thing, and is absolutely doable, however special considerations need to be taken prior to pulling the trigger, and one must realize that you may encounter a situation that you need to pass on a shot with your smaller cartridge that could be taken with a larger one. The way I look at it, using a .243, 6.5 creed, .260, or similar cartridge on elk, is similar to archery hunting elk. Avoid the heaviest bones, put the bullet in the heart/lungs, and it's a dead elk.