John, I think you might be missing my point (which was very well summed up above). New/returning collectors, shooters, hunters, and so on should not be “fed” with wrong terms simply because they’re more popular or common (or easier).
As an example, here in Norway, when it comes to firearm related vocabulary, we have many “correct” terms and many more “popular” terms. The first ones being often used by people who served in the military or are around guns in a professional setting, or collect seriously. Casual shooters/collectors, people who hunt and don’t care about the firearm at all etc use the popular and informal ones.
One very common mistake is referring to the whole barrel of a firearm as the “bore” when they reality mean to say “barrel”. Løp = bore, pipe = barrel. Military and police documents, manuals, instructions, legislative papers, etc clearly use the “pipe” term. Yet companies keep talking about the “løp” and spreading this stupid mistake!
Same goes for people using words translated directly from English, the correct Norwegian word for the device on a handgun which halts the slide on an empty magazine is called “varsler” or “alerter”, as in it alerts the user of the magazine being empty. However, many (most) people use the ridiculous term “sleidestopp” (“slide stop”) when this has NO historical basis, and has never been used in any military or police paper, being only a direct, poor translation.
The same goes for the well known 8x57 IS/IRS-JS/JRS debacle. Manufacturers like Norma sadly keep using entirely incorrect terms, just because people are used to it…
As for the 6,5 x 55 cartridge, seeing as it was used in the KJ rifles/carbines, Swedish rifles and carbines, AG-42, Madsen, various Colt LMGs and MMGs, and even the Ksp 58 (FN MAG (M240)), it’s in my eyes plain wrong to connect the cartridge simply to the Swedish rifles. Again, it was a joint development (with the design originating in Norwegian ongoing bullet diameter trials), and thus it’s wrong to give all the credit to the Swedes (or even to Mauser like many people do). A bit like how the Gewehr 1888 is VERY often called the “Mauser 1888”.
There are later civilian “redesigns” or “new standardizations” of the original cartridge but in my eyes just “6,5 x 55” is more than enough to know what one is talking about.
Only for modern use with tight chamber tolerances is it necessary to talk about “SKAN” and “SE” chambers.
And like pointed out, don’t take this personally (I trust you know me well enough not to!), it is my general view and how I treat all of these “wrong” terms :-)