Accuracy fixed.

[Klem]

I imagine glue will get soft as the breech heats up but as long as it is contained in the join it should (like water) be essentially incompressible. If incompressible then it is still should be providing support. Unlike grease, which is always viscous and so there's more opportunity for it to migrate out the tiny cracks and joins when hot or cold, when in use or being stored. I do notice when pulling off old barrels that there always seems to be less grease than when they first went on.