I am not a competitor, but I have a stiller action, rock creek bbl AND a 17" contender bbl that shoot their best clean. I would really prefer what I read on here that they would be that way, BUT they aren't. GaryBench rest shooters clean every card, 50 shots. It takes 10 to re lube barrell.
Accuracy is the highest standards.
Using Quality ammo.
don't know about jacketed or cheap stuff.