Competitions normally run aftermarket barrels. Thats what it seems like on facebook site anyway.
I surely don't see 100% stock rifles shooting them but if they do, they are normally at the bottom lol.
I don't shoot competition, I shoot for meat and for thrill.
Ditch them scopes and get you a sidelock if you want the right to brag IMO. Those rifles sort out the real shooters with skills.