Paul,
I've never heard of anyone taking out the breech plug between shots. You do a lot more than all of us I'm sure. Yet I do clean between each shot. Here's what I do and it's always the same so when I get in the field there's no performance difference. I use a cleaning jag the kind that almost fully contacts the bore and has the 1/2 wide cross hatch face. I wet patch with TC's prelubed 1000 patches then follow with a dry patch. I get almost no residue and usually shoot about 15 shots this way. Afterwards my breech plug is usually quite clean with only a bit to clean off the face. At the end of the day I pull the plug I also take the scope off because I have Leupold's quick detachable rings and scrub the threads and dip in running water then run 2 prelubed patches followed by a bore snake with light gun oil on the last 6". My entire cleaning time takes 7 minutes. When I hunt I wipe with 1 dry patch and load just like when I'm on the bench to recreate the same bore.