I finally got to wring mine out yesterday... It functioned perfectly. Slugs offhand @ 100 yards were inside 6 inch groups (gun will shoot better than I can) and low brass 100 box bargain shells cycled with no problems with factory magazine as did 3 inch OO buck.
I love this shotgun! At 50 yards with slugs, I can shoot better with it than with my Yugo underfolder.
... now for the conversion.