It starts with: Take the barrel from the stock, put it in a bucket with cold,no, warm,no hot water.The next one said never remove the barrel from the stock.Do it only one time in the year when you make a ' great cleaning'.Never understand what he mean with 'great cleaning'.
Cleaning the barrel is a never ending story for every ML shooter.
Undertaker,
The answers given vary for different situations. People live in different climates and use different guns in different ways. I have had some experience with different situations, so I can see merit in different answers.
If you have a hooked breach gun with a halfstock, then pulling the barrel and putting the breach end into a bucket of water is a convenient method of cleaning. If not for the sights, one could take a bath with it.
If you have a pinned barrel fullstock, then pulling the barrel is a lot of trouble for no reason. Plug the vent or nipple and slosh water in the bore until it runs cleans. Follow with some cleaning patches and then drying patches and then lubing patches.
Water temp is truly personal preference. Either way can be managed. I have used hot water and believe that unless you dry and lube the bore very quickly, it will form a rust film quickly. I did this at home when I shot in competition near my home.
I normally use cold after hunting. I believe that unless you dry it carefully, that you can get rust later, so I am careful about that step. I use cold since it is available in the creek where I hunt and I can clean my gun in the field rather than leave the fouling in the bore for the drive home. This also makes less mess in the wife's house.
Lube is another issue where there are multiple options that work well. I use Rig 2 Sportsman's Oil. It is a water displacing oil that works very well for salt water fishing equipment and also for my ML guns. I know that people use Ballistol and Sheath gun oil and claim good results. I have also used 30 weight auto oil (I had it in my truck in case I needed it) when I had nothing else and this worked very well. I use alcohol to clear this out before shooting.
Others claim that Crisco vegetable oil or commercially available Bore Butter is better. They state that petroleum residue causes fouling in the bore, but I have tried both ways for substantial periods of time and believe that the difference in fouling has more to do with powder types; sizes of charges and patch lubes used than the bore preservative used.
As to great cleaning, I suspect that the writer meant to clean once, but was wanting you to do it very well rather than often. I like to run a white patch down every bore at least once every 90 days just to be sure, but then I am from Louisiana and now live in the Carolinas. Humidity is a big concern. I follow this inspection patch with a lubed patch -- just to be sure. When I lived in Indiana, I was not so careful as it was quite dry where I lived.
Different answers for different situations...
CS