Ive read a couple threads on here, where people talk about deep cleaning the barrel.  I deep cleaned it right out of the box, ran i cant even tell you how many dry patches, alcohol etc down the barrel, mounted the sights and hit the range.  The first couple were ehhh.  At about shot 3 or four was when i was impressed.  Now i just run a couple patches through it when i get home from shooting and call it good.