Not that it matters, but I just removed a barrel from a CZ 550, and it was glued in with epoxy or other white resin adhesive. Not tight against the shoulder, but certainly held tight.

I'm assuming that this was from the factory + the headspace was correct.

All CZ rifles we worked on had glue on the barrel threads.

Still not as bad to remove as some Browning rifles.

There is some kind o glue in 99% of them -- the bigbores, 505 and 450, were barreled in the state, rather than in the factory

In the state? Which state? It was not a big bore.
Yes, factory barrel, headspace was perfect and the barrel was quite tight, but not too tight. Goldilocks tight.
I didn't realize that all of them had it; just insurance. As I said, no issue; just an observation.

Kansas City I believe, Tom.

That is not a state.

Picky, picky. Missouri.