Like 8mm/06, I too am curious about whether teflon tape will work with loose T7 powder, or are folks getting stuck breechplugs when using teflon tape and shooting T7.
I put a very very light amount of MX Bore Conditioner on the threads before i wrap the plug with tape. Any good quality synth oil or CLP should get similar results.
Before I used the BH209 I shot T7 fffg with the plug wrapped I didnt see any real difference in the way the plug looked or came out then with the BH.Same load 100gr by volume.