There are 2 schools of thought on this. I personally go along with the cleaning after every use. But many years ago when I shot indoor smallbore there were shooters that shot every week sometimes several times a week and they never cleaned their bores! Now IMO that is a lot of fouling as we all used lead match grade ammo. But these old timers put the bullets into the X ring more often then not. Another shooter I shot alongside was a multi time national champion and he cleaned his rifle(s) after every shoot. So take it for what its worth.