building a project 338 this summer and I'm starting to get all the bits and pieces lined up and priced out. been finding more and more clamp on brakes. always kind of seemed like the cheap half @$$ed way of doing things to me but I've never owned one so my opinion is pretty much based off of nothing. I certainly wouldn't mind saving a few bucks on an expensive project but not at the cost of accuracy. how would a good quality clamp on compare with a threaded one? can they really effect accuracy? (my main concern is it coming loose or shifting a bit while being fired) does anyone here have a clamp on on their rig?