I shoot the main and the tournament course. I will say I shoot Briley Ultimate Ultralite tubes. The straight rifling makes a difference. I break any target on our course. We have targets at 50 + yards.
Can't bring myself to shoot our sub gauge course. Not so much the targets, which are soft, but only 8 stations. IMOD and LF will toughen up any course. 20 stations on our main course, and five on the Big Boy course. They are adjacent to each other, and can be shot during the same walk around the course.