That barrel is going to be just fine...and if for any reason it's not, the Criterion guys are top notch and I'm sure they will take good care of you. Shake out all other options first, because IMO the barrel is probably your least likely spot for your current accuracy issue. As mentioned, be sure the optics are mounted solid. Shoot some heavier bullets. Be sure the barrel but is torqued within specs. Let someone you think is a better shooter than you test it out when you've been through the basic checks...not the answer anyone wants to get, but sometimes we gotta check ourselves too. Might just take a little sweet talking to get her warmed up to you. Welcome aboard.