Let me clarify the question a little. When you're target shooting at the range with a ML using 777, how many rounds can you reasonably shoot through the gun until you should remove the breech plug and thoroughly clean the barrel before continuing to shoot. Most people have discussed using a spit patch after every shot but there is also a point at which the breech plug is removed and the barrel is thoroughly cleaned. Although this may be a personal decision there must be a general range of shots that could be recommended e.g. 3-5 or 5-10, etc. I understand that you should clean any gun after you are finished shooting it and will be putting it in storage. If it is a personal decision then what are the most important factors that influence the decision.