As kids, many of us did things & got by with it that defie's logic and good sense. Rancher I spent summers with haying, and elk season's with Dad at his ranch too. We'd gone out before haying started to bring in some firewood for his winter supply & saw a great many pine squirrels. He commented I should have brought my .22 along as they'd make a good mess of fine eating. The next day I went up there with a gunny sack to fill up with 'em. That was around 1960 +- a yr or two. Seems like I shot 20 or more of 'em. Right after shooting several in short order closeby, and when reaching down to pick the last one up. I saw another flicker beside a pine tree & took aim to nail another bushy tail.
In just a bit, a 5pt bull in velvet stuck his head around the tree trunk to see what I was up to. Not 50 feet away. Since the evening before and a few other times that summer. We'd gone out trying to get a 'summer elk' for the freezer. Having that dumb A--d teenager's notions. With much exp killing beef with the same rifle. When his head turned just right for an under the ear shot I took it. I swear it looked like his head hit him the rear end before he went down. You should have seen Orin's shocked look when I dumped a table full of bushy tails and the loins out of that sack!! That's one of my most thrilling moments when he saw that meat & looked at me speechless knowing all I had along was that .22. The next morning we went out & brought back the rest of the meat. That was in August, they're sure tame, and fine eating that time of year after lazing around feeding on the green grass all summer..
Not a chance I'd do that again and am not bragging about it now. It's just a fact of one of those things I did and got by with as a kid of 15. I sure don't advocate anyone else doing such a stupid illegal stunt, nor to use a much too small a caliber rifle either. I fully agree with these other guys on the '06 and 180gr bullets as being the bare minimum yet, very near perfect cartridge for elk. Although I now use a .330WinM with 200gr Sierra Game Kings. Much of the reason is because I shot the chamber loose in the '06 & the gunsmith at the time told me that would be the perfect 300 I'd been harping about getting. When he said the headspace was worn out, I told him to go ahead & rechamber it. I haven't looked back yet. and it's still putting them all on a typing page at 300yds. When the original military barrel wears out I'll have it rebarreled with a Douglas, or Lilja tube in .300win/m, partly because I have two other '06's and no other 300 mag.
When you compare the 7mmag's ballistics table's to the 30'06. You'll discover there's only one difference between them besides' the quantity of powder each one requires. that's the fact a 7mm's heaviest bullet stops at 175gr and the '06 can go clear up to 240gr IF you can find 'em that heavy. I got some back in the '60's ONCE and never seen 'em that heavy since. I feel a 180-190gr is perfect in the '06, but, I went to 200gr's because of having a "But once" 180gr corelokt blow up on the surface of a cow elk's ribs in 2000 at 200yds. That had to be a single bad bullet as there's been over 50 other elk killed w/o problems with the same batch of bullets, many of those with .300win/m too. I've reloaded ammo for a camp full of hunters so there's been close to a dozen of them that have shot the rest of those elk. A few in the timber at feet instead of yards. Not another bullet from that batch has blown up. It only takes once for me to change when that kind of thing happens though.
Wish you the best,
George