Years ago I was a "bigger, stronger, faster" gun guy. I visited a Utah barrel maker to help me decide on a larger shoulder mounted hunting device. Then I saw the results of his brother's use of a "rocket" on a mountain goat. It totally changed my paradigm on hunting.
During the next year I studied the accuracy guys, the long range guys, the girls who were given small caliber guns to hunt with their men, the kids - everybody I could get information on caliber choice from.
I had never met anyone who owned what it was boiling down to, but I didn't see the fallacy of the trend kicking off between my ears.
(I've gotta stop right here to assure anyone not on the same page with me - this is not to disparage anyone who uses rifles of a heavier caliber than I. In fact, there are times I really applaud the use of the big stuff to acquire one's safety, one's meat, or one's trophy.
This is just about me, the Royal "we", nobody else.)
I was nearly solid on my bore size when I read a story about a woman from Montana - forgive me for not noting the source -
This woman owned a surplus "Swede" she got shortly after the war, 1948 I believe. From the date of her acquisition until her death at over 90 years of age, she noted every game animal taken by herself with this rifle - over 140! The game animals noted were from foxes . . . to an Alaskan Brown Bear!
Sold!
I only had to pick the 6.5 case I was to make my own.
In all the reading I did of comparisons of the different 6.5s, almost every single author stated somewhere in the article that "This XXX 6.5 XXX is the equivalent of the 6.5 Swede." Authors are still doing the same thing today.
I walked into my local discount gun store and said, "Bob, I want a 6.5X55 Swede in anything you've got it in!"
Bob never said a thing, changed expression, or stopped moving. He walked right past me like he'd never heard me speak, the door to the storeroom closing on the spring hinge. My guts were in a turmoil because knew I'd committed to something semi foreign, Bob ignored me like an unseen ghost, and my wife needed explaining to when I got home.
Bob walked out of the storeroom with a box containing a brand new Ruger 77 in 6.5X55. "Just got it this morning," he said.
That rifle has filled my freezer many times over since that day. I don't shoot it much for fun, except for the 400 rounds of Swedish military stuff I bought that day, along with the two boxes of Remington CORE-LOKT 140s. In fact, the only game I've shot with it is deer. Lots and lots of deer.
The only deer that didn't dropped in their tracks with this rifle were three that were running, and I missed, and one that startled me when it stood up in the tall grass and I snapped the shot off prematurely, and missed. Every deer hit - never took a step.
I've still got some big stuff over 30 caliber. I still shoot hot loads in my big revolvers. But when I open the door to my rifles, my Swede is the first in the row, ready to go, deadly as can be when I do my part.
I have a custom Husqvarna in .270 that might become a 6.5-06, or 6.5-06AI . . .
I have a custom tang safety Ruger77 in .338 Win Mag that might become a 375 H&H based 6.5 of some sort . . .
I have a Marlin XS7 in .243 that just needs a ready-made McGowan in 6.5 Creedmoor to screw in and tighten the nut on . . .