I do a lot of hunting with my Pedersoli SxS 12ga Multichokes. Cleaning? As many ways to do this as there are people doing it. My method for what it may be worth? Wedge out, barrels off. My big dedicated soup pot heating on the stove with a gallon or two of tap water and a small squirt of liquid dish soap. I pull off the nipples and unscrew the chokes and into the pot they go. If needed, the lock plates also. Bring the pot to a low boil. Pot off the stove and into the kitchen sink. A couple old bath towels laid out to protect surfaces, slightly overlap the edge of my pot, and collect water escape. The breech of the barrels into the pot. I use a 16ga jag and a couple of generous patches to draw water up and out of each barrel several times with some enthusiasm. Shove down hard enough so water gets past the patches and some comes out of the muzzle on the upstroke. Things get hot so I use old wash cloths to hold the barrels and collect the escaping scalding water. Barrels out, drain water from the nipple holes and lay flat on the bath towels. Copious large dry patches in each barrel, including a couple run down and twisted with the patch puller, until thoroughly dry. Finish with a couple of passes, to include the patch puller, with a patch with TC Bore Butter. Set the barrels muzzle down until they cool. The wet towels are then used to wipe down the hammers and other metal. Nipples are likewise wiped down and I blow through them to be sure I can see daylight through the fire channel. The chokes are likewise wiped down and dried. Scant bore butter applied to threads of the nipples and chokes. Reassembled when the barrels have cooled. So cleaned I merely load with no further ado for the next hunt.