Hi Guys and Gals I have just joined the QB78 family and I am loving it. I am preparing to do a good cleaning and deburring once a get the O-ring kits in but in going over the air gun I noticed this mark in the barrel I did some more crowning to see if I could "reach it" but could not. Do I need to file the end of the barrel down and recrown ? Can it be done with simple tool eg. flat file or grinder ? Or is it nothing to worry about?

IMG_1373.jpg

New Air rifle needs a good cleaning LOL.
IMG_1372.jpg