I have a Sxs in 24 ga. and lucked out and have more than a lifetime of shells for it. The shot charge is 11/16ths of an oz. or the same as a 3" .410 bore. I have shells in 5s, 6s, and 8s. Used to use it on woodcock, but now use none tox shot so I use either a 28 or 20. Still use it for doves, squirrels early and great bunny gun. Some years back maybe 20 someone imported Beretta O/Us in to this country. Fiochi still loads the 24ga and are available from a number of places. Got to find some brass cases and load some non tox loads.