Lets say you work up 10 loads of 5 rounds each(different powder, bullet etc). So you have 50 rounds total. You hit the range with a clean gun, fire one "fouling shot" and start shooting for accuracy(which round works best). How many shots do you fire before you do a good cleaning?
Personally, Ive stuck with 5x5=25 time to clean. Not sure if this matters, but Im using Barnes X bullets so copper residue is my biggest concern.