He will not be loading his own shells. He currently has a 10 gauge semi auto and hasn't had any trouble finding shells, although his semi does handle 3 1/2 inch shells so I'm unsure of the availability of 3 inch or even 2 3/4.

My father does a bit of collecting although all his guns hunt. He probably has between 50-75 firearms. As I said, he already has a 10 gauge but wants the SxS as he doesn't own a SxS. Also, I think he just wants a 10 SxS because they are somewhat rare as well.

Normally, for duck and geese hunting, he hunts with a 12 semi and keeps the 10 propped up against a corner of the blind for long shots. I have also been looking for a 10 O/U but they appear even rarer than the SxS's.