I find all this talk about small caliber rifles for elk very interesting.
I find it kind of boring, to be honest. People have been killing elk with .257" bullets since the .25-35 Winchester came out in 1895. Killing elk with even smaller-bore cartridges dates back to the .22 Savage Hi-Power of 1912, which Savage aggressively marketed as suitable for all North American hooved game. People have been killing elk with the .250-3000 Savage since 1912, as well. A few Americans were killing elk with .264" bullets after Chas. A. Newton released his .256 Newton cartridge in 1913. A few well-heeled Americans used the Styer-built Mannlicher-Schoenauer carbine in 6.5 M/S for elk and bigger animals since the inter-war period and it was used in Africa from about 1905 to kill things bigger and tougher than elk. People were killing elk with the .257 Roberts before Remington commercialized it in the 1930s. People have been killing elk with the .257 Weatherby Magnum since 1943. So, there's really nothing new about using small-bore cartridges to kill elk.
In part because I can’t help but wonder how many 6.5 and smaller fans have ever shot a truly big bull of 7+ years old.
I don't think you're really wondering how many 6.5 and smaller fans have ever shot a truly big bull as much as you're positing a pre-conceived notion that to do so would be rare.
I have a feeling that some have more experience in typing on forums than actually killing elk.
I get that same feeling, every time I read a comment like this one below:
There’s a big difference between a 900+ lb. Bull and a rag horn or cow
That's true. However, anybody who has filled more than a few mule deer and elk tags knows that it is also true that the biggest elk God ever made IS NOT more bulletproof on a broadside presentation than a run of the mill mule deer is. What will kill a mule deer on a broadside heart shot will kill the biggest bull elk there is equally stone cold dead with the same shot placement.
I also wonder how many small caliber proponents have ever lost a bull with their small gun
Probably not as many as your sense of wonderment seems to pre-presume. As a kid of 11 back in 1976, hunting the wide open spaces of the wide open west with a Marlin 336 in .30-30, I understood that I wasn't going to kill a mule deer on a stern to stem shot at 400 yards with my "saddle gun." Making a pipsqueak round like that work means accepting its limitations and hunting inside of its performance envelope.
When I was 20 in 1985, I bought two Ruger M77RL Ultralights in .250 Savage on the same day at the same time. The old geezer gun-shop flies hovering the shop's counter thought I was one crazy dumb-ass kid for buying one of them, let alone two. I kept one for me and gave one to my dad for Christmas. I went on to fill 21 mule deer tags with it, 3 pronghorn tags, 2 caribou tags, 1 elk tag, and God only knows how many feral pigs, goats, and sheep I killed with it. If you're going to limit yourself to broadside shots out to 300 yards or less, you can kill every kind of hooved game in North America with a pipsqueak .250 Savage. I don't think I'm alone in my understanding that you have to accept some limitations if you're going to use a pea-shooter like the .250 Savage in the field, and you have to be willing to hunt within its performance envelope. That wasn't a big deal for me, because I won't shoot over 300 yards or take anything but a perfect broadside shot on game in a sport hunting situation, anyhow.
The only time I ever had to shoot a game animal more than once was when I made the longest shot of my sport hunting life on a California D-14 mule deer while using a Ruger No.1 B in .300 Weatherby Magnum.
In my haste to get out and get hunting, I grabbed a few rounds I'd loaded with 190 grain Sierra Match King hollow points. I hit the deer with my first shot. It didn't seem to notice. I hit it again with a second shot. It didn't seem to care about that, either. The third time, I hit it with a 180 grain Partition. That turned the buck's heart / lung cavity into liquified goo. My first two shots with the Match King 190's punched straight, cauterized .308" holes. That's the only time I ever had to shoot a game animal more than once in a sport hunting situation, and if I wouldn't have had my head up my ass, and had the right ammo in the chamber to begin with, it would have been "one and done."
But, as big a mess as that 180 grain Partition made at 278 yards, I'd seen equal gore hitting black-tails at under 100 yards with 63 grain Sierra Semi-Pointed bullets from a .223 Remington out of a Contender carbine.
If I was advising a new elk hunter on a first rifle, it’d be a 270 Winchester, 308, 30-06. They’re all better for elk than smaller calibers.
I've tagged 20 elk in my lifetime. I tagged 9 of them with a Marlin 336 in .30-30. I tagged 7 of them with a Whitworth Mauser in .270 Winchester. I tagged 1 wit a .495" patched round ball from a .50 cap-lock Lyman Great Plains Rifle, 1 with a T/C Contender Super 14 in 7-30 Waters, 1 with a Ruger M77RL Ultralight in .250 Savage, and 1 with a Browning A-bolt II Medallion in .257 Roberts.
If I were advising a new elk hunter, I'd tell them to use whatever legal method of take they want to and can afford to practice with during the off-season. I'd encourage them to pass on anything over 300 yards and anything that isn't a broadside presentation with a clear shot to the vital zone, like I do. Hunt like me, and even a pipsqueak .250 Savage with less on-paper power from 200 to 300 yards that a 77 grain TMK 5.56 NATO has from my 20" barreled AR-15 A4 will kill an elk stone-cold dead with one shot.