MM: I tried to NOT clean after every shot when I was new to the sport, but eventually learned that the only way my gun would shoot accurately day in and day out, regardless of temperature, or humidity, was if I cleaned the barrel between shots.
I did not get into ML shooting to see how many shots I can fire in a day. I am totally awed that Roundball can fire 50 rounds every saturday morning in his range trip, for instance. Shooting 20-25 rounds makes a good day at the range for me, and a long one at that.
I consider ML shooting to be a " gentleman's game ", where paying attention to details, deliberate motion and carefully aimed shots is the order of the day. I have rapid fire modern guns to shoot when I want to let off steam, or scratch a wild hair on my butt!
By my way of thinking there is no point to trying to find some load that will let me shoot a lot of shots before I have to clean the barrel again. I have spent enough time with my rifle on a bench, shooting at paper targets, to know that accuracy drops off predicatably after the 3rd shot when I don't clean the barrel. I start seeing flyers.
Now, having said that, Like every other shooter, I have a bit of lazy streak in me, and I would LOVE to have a patch and lube combination that would let me shoot all day and have good accuracy, and not have to wipe the barrel between shots. So, I recently learned that the chunk gun shooters are lubing their bores after seating the ball on the powder. While they still wipe the bores between shots, the crud is very liquid and comes out easily. I am going to see of loading my gun this way allows me to avoid cleaning between shots, AND STILL GET GOOD ACCURACY. I like what Roundball is oding, but he lives and shoots in N. Carolina, and I am up here in the flats in the Midwest, with weather conditions influenced by both the Great lakes, and the Gulf of Mexico. It can be humid as a sauna one day, and dry as a desert the next. It all depends on where the winds blow.