I went through a bit of agony with the Huntsman stuck breech plug and 777 even when using pink teflon. What I learned to prevent a stuck plug is not to tighten it more than finger tight and to use good anti-seize grease. After the first shot, I back off the plug a quarter turn and continue shooting. After shooting back off the plug again. Since I do this, I have never had to use teflon tape and the cleanup is easier.
best, nrb