Looking to get one for my son's hunt. I am an accuracy freak and am lost on what to get him. There is 20/28/30 inch twists. What will shoot the best? Since you can scope in AZ, he will have one to insure a clean harvest. What do you guys do in this flavor? I kinda like the Powerbelts and don't have much sabot experience. Don't like swabbing between shots much.. TIA