Yes...Then stick some pellets ( 30 - 50 ) through it to lead the barrel.If you cant get a good group , clean and repeat with a different pellet ie Bisley Mags, AA Fields, JSB Exacts until your happy...............
I will be emailing the supplier of the rifle ( clean the barrel before you sell it) ill lead it up with a few different pellets before I decide the best pellet for it.