I built a 30 Super (300 H&H rimmed) for a customer on a high wall action that has had extraction problems. My reamer cut a tight chamber and, with any loads at greater than 308/30-06 velocities, the cases stuck. I even bought another reamer that is .003" larger in all dimensions. The larger chamber helped, but still requires a bump on the lever to kick out the cases. I own a 22 Hornet on a German Martini action and a Bill Sukalle barrel that also has extraction issues. Yes, a 22 Hornet! My suggestion for anyone wanting to build on a Cadet, is to be sure the reamer is NOT a Minimum dimension reamer. Then, polish the chamber to a mirror finish. Then, be prepared to shoot modest loads. For a trouble free single shot, build on a Ruger #1 action.
Otto