i used tape for a while too. You actually do want to back it off just a little after 3 or 4 shots. i left mine snug once and after6 shots i packed up, went inside to start cleaning it and it was froze up. Had to pull the barrel and use a small propane torch to heat the breech area for a minute and then it backed out. I stopped using tape after i hung my rifle up, then when to pull the breech plug and found the tape had dried to a crisp while it sat. Plus it was a pain cleaning it out of the threads. Im back to using the grease and just taking the time to back it out a little after 4 shots. Cleaning up the grease is easier than trying to get tiny little pieces of tape out of the threads. I guess the tape would be fine if you back the plug out some as soon as u are done shooting and dont let the barrel cool down.