Hello all, I have a 21 that I use for sxs sporting clays and each time I shoot a pair the barrel selector moves to the left barrel and I have to check it each time I load and shoot. A shooting buddy has one also and has the same problem. This does not occur when fireing snap caps, only on live rounds. The selector button on both guns are crisp so I don't believe I am some how dragging or bumping it with my finger when pulling the trigger. Is this normal? Any insight regarding this issue would be greatly appreciated, Hal, Jimmy W? Thanks to all of you folks and shoot safe. Bruce