While we're doing "cleaning confessions", ...
I don't hunt, though I expect to use my Crockett rifle for some varmint control around here in favor of the AR-15/22 or my CZ 455.
May also decide to do some squirrel hunting with it, but if I go off the property to do that my wife will complain that I should be shooting the resident ones.
But in any event, my cleaning regimen with either the Crockett or GPR is the same and "at home", typically after a couple of hours at a BP match, having put about 25 shots or so through the gun.
I use Simple Green together with as hot water as I can get out of the laundry room faucet that's at the other end of the house from the water heater. So it's hot, but not painfully hot. And you really don't need terribly hot water for this to work as well as it will. I don't bother to use water out of our RO unit, but even the faucet water is heavily filtered by a big expensive whole house filter, and it's "county water" now. So it's pretty decent (modulo some scary chemicals the county keeps reporting are in it and blaming on a variety of sources). But I also don't think that water quality plays any significant role in cleaning BP barrels.
I pull off the barrel, remove the nipple, put it in a little container with 91% alcohol, and then flush-clean the barrel with a small bucket and the water/Simple Green mix in it. I do the soap flushing a couple of times, then flush a couple of times with clean water. Then pour a bit of alcohol in and out of the barrel and also run a couple of alcohol patches up and down to get rid of residual water. I clean through the nipple hole with alcohol on a couple of pipe cleaners. I used to just clean the nipple with alcohol and pipe cleaners, but recently have taken to "power flushing" it with alcohol and a small syringe -- since I discovered that got it a lot cleaner than just using the pipe cleaners, which I still use after the power flush. I used to worry about brushing out the (on the .32, VERY NARROW) combustion chamber of the patent breech before flushing, but on reflection, experimentation, and the experience of others, no longer believe that this is necessary with the sort of flushing I do.
That whole process is a LOT faster than it sounds.
Then it's time to oil it up and put the rifle back together. I used to use Ballistol for this, but I've begun using Montana Extreme Gun Oil because I've become unsure of how well the Ballistol works for long periods of storage. The jury is still out on this experiment. I'm also experimenting with running a patch or two with WD-40 through the barrel because I discovered that this seems to pick up some remaining fouling -- but I don't know if I'll continue with that. It's an evolving process. I know the knocks on using "petroleum" products on these rifles, but again, some of this is still experimental. I have not (at least yet) seen any of the detrimental effects of using regular gun oil or the WD-40; but I am careful to remove that as thoroughly as possible during cleaning or before shooting.
I do NOT use vinegar. It is a strong acid and hell on bluing, and I wouldn't even use dilute vinegar on a gun. I once used vinegar to clean calcium deposits out of a tuba of mine and almost ruined a $5,000 instrument with it. So I'm very careful with it now, even though its effect on steel isn't at all like its effect on brass. I've just gotten very careful using strong acids or bases on anything I value.