I have heard that - and, some people do it. I don't think anyone knows for sure what works and what doesn't. Some of this can come down to superstition and whatnot. Some people do it because someone told them to. MAYBE there is something to it for certain types of rifles.
I just took mine and shot it after cleaning the gun 1 time first.
I just took mine and shot it after cleaning the gun 1 time first.