I don't trust anyone in the cartridge business. I used to, but I discovered many of them are crooks. The turning point came when I bought an old Colt revolver in 32 Colt caliber. A friend gave me about a dozen rounds, but I went on an active search for more. And I bought a box of what appeared to be 32 Colt cartridges. Got it home and opened it. It was half Colt and half 32 S&W. No, they're not the same thing. So as I went along over the next year or so, I'd see a box and ask what was in it. If it was sealed, I'd ask to open it prior to buying it. Universally they would refuse.
So I wouldn't buy. Then I did buy a box with the saran wrap cover. And right there in front of him I opened it to see. And sure enough, it was full of .32 S&W ammo. And being less than pleasant, I pointed out to him he was a liar and a thief. He was plenty upset with me, but he did give me back my money. Not sure what he could say, since he was caught trying to pull a fast one.
I've been told since that many folks don't realize they are two different dimensions. I'm not buying excuses. Ammo sold as one thing should be that thing, not something else.
For a while I was in the habit of buying the correct vintage 22 ammo box to go with my older K22s. Not real difficult. I'm not sure why I stopped.