My gunsmith recomend me to break-in my new and first rifle. That's the first time I heard about break-in a gun(I have a glock and a ruger 10/22). He told me to first shoot the rifle and then cleaning it with a cleaning patch with solvent two times and then two times more with a dry cleaning patch. He then told me to do this process 20 times. Then the same process with 5 shoot for 4 times (20 in total). Is this process very common with rifle or with common guns? I never did it with my ruger or the pistol glock.