And I'll add that the Knight manual says to tighten the plug until it stops turning an NO more........finger tight in otherwords.

The thing is sabotloader, I never had a problem getting the plug out when using Pyro, Goex, or CleanShot and I just used the Knight Breech Plug Grease. But when I switched to 777 the Knight grease did NOT get the job done. I tried automotive anti-sieze......messy AND the plug siezed harder. Then I tried the tape and bingo, no more troubles. Then for grinskis, I tried the CVA Slick grease after hearing cayugad's success with it and it does the trick too and less cleanup than the tape.

I clean the breech area, & the threads meticulously after each trip to the range and clean the plug & nipple with ultrasonics followed by a good scrubbing - so build up is not an issue on my rifle. And as Triple seven alluded to, I do have a concave plug.