Thanks for great information.
Did not know it was so may systems for takedown.

But, the more I read, the more I have to ask....LOL.

The more modern system that do not turn, unscrew the barrel, but uses a lever to lock the barrel. When was it introduced? By who?
Is that also a system that will work good in calibers from 9.3 and up? Thinking of a 10.75* mauser made with a take down system.

Or, is the system that takes out the action and barrel as one part the best, when it comes to solid, keeping the precession.

Rifles with these systems are very interesting. To some, that system is new, a shame. Thinking of the engineering that made it, 100 years ago.
That is also why I like to have one.A old mause or a manlic in a old caliber with the takedown system.