I have a Mossberg Patriot 6.5 PRC that I have over 1000 Rounds on it and the groups have opened up allot in the last few months from less than .5 MOA to over 2 inches. I cleaned it good and ran bore scope down it and it looks like it is done and needs a new barrel but I want a more trained eye to look at it for me before I get a new barrel for it.