RE: 24INCH BARREL, ANY GOOD FOR DOVES EXT.
Barrel length today is all abut the feel and swing of the gun. Barrel length has nothing to do with patterns, that is controlled by the choke and to some extent the bore diameter. Most people prefer a longer barrel for doves but, use what feels the best to you. The Xtrema has a rotary bolt face which makes it on the longer side. A 24" barrel on an Xtrema will be closer to a 26" barrel on most non rotary bolt face guns for over all length.