Much fuss is made of thread wear on take-down rifles but in reality its a non event especially on modern rifles. There are a few points to take into consideration:

The threads are lubricated with either anti-seize or grease so are not rubbing against each other dry.

The threads are finished to a reasonably high surface finish so friction is minimal and the threads are only screwed together or apart at hand speed and only occasionally, not every five minutes. Most people would travel with the gun apart and screw it together once in camp where it would stay like that until they leave. And most people don't go hunting every week where a take-down rifle is required.

The threads of the action are heat treated either by hardening and tempering or case hardening which is the case with most Mauser actions, therefore the threads are hard.

The barrels are made of good quality steel and in the case of modern barrels out of 4140 which is also hardened and tempered.

Most Modern take-down rifles use and ACME thread profile as opposed to a V-Thread, which was designed for screw threads and therefore intended for situations which require regular screwing together and apart.

Most modern Take-down rifles also hard chrome the male thread of the barrel which gives a glass hard surface with a very low coefficient of friction.

Therefore in normal use with a little care thread wear is not an issue.

Matt.