Not all were wildcats, there, "chief", as many already know ...Sako made factory rifles and ammo for some, in 6mm and 22 calibers, factory cases, and ammo available for others, but they didn't have the hype added and the big advertising of Hornady, calling it "advanced", and it will be "the next military cartridge."
Same with Hornady PRC line...those were all made previously by, several others.
Imperial cartridge line of Canada, off the 404 Jeffery case, made factory rifles and cartridges, Dakota Arms rifles, and factory cartridges, Lazerroni Arms line of rifles and factory cartridges, Arnold Arms, all made magnums off the same or similar cases, and sold many factory rifles and factory cartridges.
But after so many years in business they all folded, cause only so many people want big magnums. And LR and LR steel shooting was not as popular.
While Hornady is totally diversified, great advertising, but they do have trouble meeting demand after introducing their new lines of, already been done cartridges, with special names and a bunch of advertising hype.
Some of which have been total failures, gone before the supply of brass ever meets the public, no rifles are now even chambered for some of "their new" cartridges, Hornady/Ruger cartridges, or Hornady/ Marlin cartridges. The market is flooded with alot of cartridges that do the same thing, or just slightly more powder capacity...I like choice, but look at the crowded current 300 magnum line, it's a bit ridiculous. Stay informed.